@article{GilbertHeintelJakubietzetal.2018, author = {Gilbert, F. and Heintel, T. M. and Jakubietz, M. G. and K{\"o}stler, H. and Sebald, C. and Meffert, R. H. and Weng, A. M.}, title = {Quantitative MRI comparison of multifidus muscle degeneration in thoracolumbar fractures treated with open and minimally invasive approach}, series = {BMC Musculoskeletal Disorders}, volume = {19}, journal = {BMC Musculoskeletal Disorders}, number = {75}, doi = {10.1186/s12891-018-2001-2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-175742}, year = {2018}, abstract = {Background: Minimally invasive pedicle screw fixation has less approach-related morbidity than open screw placement and is allegedly less traumatizing on paravertebral muscles, as there is no requirement to mobilize and retract the adjacent muscle portion. The approach-related long-term effects to the morphology of the paravertebral muscles are unknown. The purpose of this study was to compare the long-term amount of fatty degeneration of the multifidus muscle in patients treated with a classical open or a minimally invasive approach. Methods: Fourteen Patients meeting inclusion criteria were selected. In all patients a singular fracture of the thoracolumbar spine with a two-level posterior instrumentation was treated, either using an open approach or a minimally invasive approach. All patients underwent quantitative MRI spectroscopy for quantification of the fatty degeneration in the multifidus muscle as a long-term proof for muscle loss after minimum 4-year follow-up. Clinical outcome was assessed using Oswestry Low Back Pain Disability Questionnaire, SF-36 and VA-scale for pain. Results: The minimally invasive approach group failed to show less muscle degeneration in comparison to the open group. Total amount of fatty degeneration was 14.22\% in the MIS group and 12.60\% in the open group (p = 0.64). In accordance to MRI quantitative results there was no difference in the clinical outcome after a mean follow up of 5.9 years (±1.8). Conclusion: As short-term advantages of minimal invasive screw placement have been widely demonstrated, no advantage of the MIS, displaying a significant difference in the amount of fatty degeneration and resulting in a better clinical outcome could be found. Besides the well-known short-term advantage of minimally invasive pedicle screw placement, a long-term advantage, such as less muscle degeneration and thus superior clinical results, compared to the open approach could not be shown.}, language = {en} } @article{BartmannJanakiRamanFloeteretal.2018, author = {Bartmann, Catharina and Janaki Raman, Sudha R. and Fl{\"o}ter, Jessica and Schulze, Almut and Bahlke, Katrin and Willingstorfer, Jana and Strunz, Maria and W{\"o}ckel, Achim and Klement, Rainer J. and Kapp, Michaela and Djuzenova, Cholpon S. and Otto, Christoph and K{\"a}mmerer, Ulrike}, title = {Beta-hydroxybutyrate (3-OHB) can influence the energetic phenotype of breast cancer cells, but does not impact their proliferation and the response to chemotherapy or radiation}, series = {Cancer \& Metabolism}, volume = {6}, journal = {Cancer \& Metabolism}, number = {8}, doi = {10.1186/s40170-018-0180-9}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-175607}, year = {2018}, abstract = {Background: Ketogenic diets (KDs) or short-term fasting are popular trends amongst supportive approaches for cancer patients. Beta-hydroxybutyrate (3-OHB) is the main physiological ketone body, whose concentration can reach plasma levels of 2-6 mM during KDs or fasting. The impact of 3-OHB on the biology of tumor cells described so far is contradictory. Therefore, we investigated the effect of a physiological concentration of 3 mM 3-OHB on metabolism, proliferation, and viability of breast cancer (BC) cells in vitro. Methods: Seven different human BC cell lines (BT20, BT474, HBL100, MCF-7, MDA-MB 231, MDA-MB 468, and T47D) were cultured in medium with 5 mM glucose in the presence of 3 mM 3-OHB at mild hypoxia (5\% oxygen) or normoxia (21\% oxygen). Metabolic profiling was performed by quantification of the turnover of glucose, lactate, and 3-OHB and by Seahorse metabolic flux analysis. Expression of key enzymes of ketolysis as well as the main monocarboxylic acid transporter MCT2 and the glucose-transporter GLUT1 was analyzed by RT-qPCR and Western blotting. The effect of 3-OHB on short- and long-term cell proliferation as well as chemo- and radiosensitivity were also analyzed. Results: 3-OHB significantly changed the oxygen consumption rate (OCR) and extracellular acidification rate (ECAR) in BT20 cells resulting in a more oxidative energetic phenotype. MCF-7 and MDA-MB 468 cells had increased ECAR only in response to 3-OHB, while the other three cell types remained uninfluenced. All cells expressed MCT2 and GLUT1, thus being able to uptake the metabolites. The consumption of 3-OHB was not strongly linked to mRNA overexpression of key enzymes of ketolysis and did not correlate with lactate production and glucose consumption. Neither 3-OHB nor acetoacetate did interfere with proliferation. Further, 3-OHB incubation did not modify the response of the tested BC cell lines to chemotherapy or radiation. Conclusions: We found that a physiological level of 3-OHB can change the energetic profile of some BC cell lines. However, 3-OHB failed to influence different biologic processes in these cells, e.g., cell proliferation and the response to common breast cancer chemotherapy and radiotherapy. Thus, we have no evidence that 3-OHB generally influences the biology of breast cancer cells in vitro.}, language = {en} } @article{LewitzkiAndratschkeKuhntetal.2015, author = {Lewitzki, Victor and Andratschke, Nicolaus and Kuhnt, Thomas and Hildebrandt, Guido}, title = {Radiation myelitis after hypofractionated radiotherapy with concomitant gefitinib}, series = {Radiation Oncology}, volume = {10}, journal = {Radiation Oncology}, number = {29}, doi = {10.1186/s13014-015-0334-7}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-175443}, year = {2015}, abstract = {We describe the case of a 71-year-old Caucasian female with primary disseminated non-small cell cancer of the lung, presented for palliative radiotherapy of metastatic spread to the 9th and 11th thoracic vertebrae without intramedullary growth. Palliative radiotherapy with daily fractions of 3 Gy and a cumulative dose of 36 Gy to thoracic vertebrae 8-12 was performed. The patient received concomitantly 250 mg gefitinib daily. After a latent period of 16 months, the patient developed symptoms of myelitis. Magnetic resonance imaging (MRI) did not reveal any bony or intraspinal tumor progression, but spinal cord signal alteration. No response to steroids was achieved. The neurological symptoms were progressive in August 2013 with the right leg being completely plegic. The left leg was incompletely paralyzed. Deep and superficial sensitivity was also diminished bilaterally. The patient was completely urinary and anally incontinent. Contrary to the clinical findings, a follow-up MRI (July 2013) showed amelioration of the former signal alterations in the spinal cord. The diagnosis of paraneoplastic myelopathy was refuted by a negative test for autologous antibodies. At the last clinical visit in May 2014, the neurological symptoms were stable. The last tumor-specific treatment the patient is receiving is erlotinib 125 mg/d. We reviewed the literature and found no reported cases of radiation myelopathy after the treatment in such a setting. The calculated probability of such complication after radiotherapy alone is statistically measurable at the level of 0.02\%. We suppose that gefitinib could also play a role in the development of this rare complication.}, language = {en} } @article{TorkzadMasselliHalliganetal.2015, author = {Torkzad, Michael R. and Masselli, Gabriele and Halligan, Steve and Oto, Aytek and Neubauer, Henning and Taylor, Stuart and Gupta, Arun and Fr{\o}kj{\ae}r, Jens Br{\o}ndum and Lawrance, Ian C. and Welman, Christopher J. and Neg{\aa}rd, Anne and Ekberg, Olle and Patak, Michael and Lauenstein, Thomas}, title = {Indications and selection of MR enterography vs. MR enteroclysis with emphasis on patients who need small bowel MRI and general anaesthesia: results of a survey}, series = {Insights into Imaging}, volume = {6}, journal = {Insights into Imaging}, number = {3}, doi = {10.1007/s13244-015-0384-2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-149847}, pages = {339-346}, year = {2015}, abstract = {Aims To survey the perceived indications for magnetic resonance imaging of the small bowel (MRE) by experts, when MR enteroclysis (MREc) or MR enterography (MREg) may be chosen, and to determine how the approach to MRE is modified when general anaesthesia (GA) is required. Materials and methods Selected opinion leaders in MRE completed a questionnaire that included clinical indications (MREg or MREc), specifics regarding administration of enteral contrast, and how the technique is altered to accommodate GA. Results Fourteen responded. Only the diagnosis and follow-up of Crohn's disease were considered by over 80 \% as a valid MRE indication. The remaining indications ranged between 35.7 \% for diagnosis of caeliac disease and unknown sources of gastrointestinal bleeding to 78.6 \% for motility disorders. The majority chose MREg over MREc for all indications (from 100 \% for follow-up of caeliac disease to 57.7 \% for tumour diagnosis). Fifty per cent of responders had needed to consider MRE under GA. The most commonly recommended procedural change was MRI without enteral distention. Three had experience with intubation under GA (MREc modification). Conclusion Views were variable. Requests for MRE under GA are not uncommon. Presently most opinion leaders suggest standard abdominal MRI when GA is required.}, language = {en} } @article{WilliamsMachannKuehleretal.2011, author = {Williams, Tatjana and Machann, Wolfram and K{\"u}hler, Leif and Hamm, Henning and M{\"u}ller-H{\"o}cker, Josef and Zimmer, Michael and Ertl, Georg and Ritter, Oliver and Beer, Meinrad and Sch{\"o}nberger, Jost}, title = {Novel desmoplakin mutation: juvenile biventricular cardiomyopathy with left ventricular non-compaction and acantholytic palmoplantar keratoderma}, series = {Clinical Research in Cardiology}, volume = {100}, journal = {Clinical Research in Cardiology}, number = {12}, doi = {10.1007/s00392-011-0345-9}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-141198}, pages = {1087-1093}, year = {2011}, abstract = {Two sons of a consanguineous marriage developed biventricular cardiomyopathy. One boy died of severe heart failure at the age of 6 years, the other was transplanted because of severe heart failure at the age of 10 years. In addition, focal palmoplantar keratoderma and woolly hair were apparent in both boys. As similar phenotypes have been described in Naxos disease and Carvajal syndrome, respectively, the genes for plakoglobin (JUP) and desmoplakin (DSP) were screened for mutations using direct genomic sequencing. A novel homozygous 2 bp deletion was identified in an alternatively spliced region of DSP. The deletion 5208_5209delAG led to a frameshift downstream of amino acid 1,736 with a premature truncation of the predominant cardiac isoform DSP-1. This novel homozygous truncating mutation in the isoform-1 specific region of the DSP C-terminus caused Carvajal syndrome comprising severe early-onset heart failure with features of non-compaction cardiomyopathy, woolly hair and an acantholytic form of palmoplantar keratoderma in our patient. Congenital hair abnormality and manifestation of the cutaneous phenotype in toddler age can help to identify children at risk for cardiac death.}, language = {en} } @article{KraemerBijnensStoerketal.2015, author = {Kr{\"a}mer, Johannes and Bijnens, Bart and St{\"o}rk, Stefan and Ritter, Christian O. and Liu, Dan and Ertl, Georg and Wanner, Christoph and Weidemann, Frank}, title = {Left ventricular geometry and blood pressure as predictors of adverse progression of Fabry cardiomyopathy}, series = {PLoS ONE}, volume = {10}, journal = {PLoS ONE}, number = {11}, doi = {10.1371/journal.pone.0140627}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-145131}, pages = {e0140627}, year = {2015}, abstract = {Background In spite of several research studies help to describe the heart in Fabry disease (FD), the cardiomyopathy is not entirely understood. In addition, the impact of blood pressure and alterations in geometry have not been systematically evaluated. Methods In 74 FD patients (mean age 36±12 years; 45 females) the extent of myocardial fibrosis and its progression were quantified using cardiac magnetic-resonance-imaging with late enhancement technique (LE). Results were compared to standard echocardiography complemented by 2D-speckle-tracking, 3D-sphericity-index (SI) and standardized blood pressure measurement. At baseline, no patient received enzyme replacement therapy (ERT). After 51±24 months, a follow-up examination was performed. Results Systolic blood pressure (SBP) was higher in patients with vs. without LE: 123±17 mmHg vs. 115±13 mmHg; P = 0.04. A positive correlation was found between SI and the amount of LE-positive myocardium (r = 0.51; P<0.001) indicating an association of higher SI in more advanced stages of the cardiomyopathy. SI at baseline was positively associated with the increase of LE-positive myocardium during follow-up. The highest SBP (125±19 mmHg) and also the highest SI (0.32±0.05) was found in the subgroup with a rapidly increasing LE (ie, ≥0.2\% per year; n = 16; P = 0.04). Multivariate logistic regression analysis including SI, SBP, EF, left ventricular volumes, wall thickness and NT-proBNP adjusted for age and sex showed SI as the most powerful parameter to detect rapid progression of LE (AUC = 0.785; P<0.05). Conclusions LV geometry as assessed by the sphericity index is altered in relation to the stage of the Fabry cardiomyopathy. Although patients with FD are not hypertensive, the SBP has a clear impact on the progression of the cardiomyopathy.}, language = {en} } @article{PetritschGoltzHahnetal.2011, author = {Petritsch, Bernhard and Goltz, Jan Peter and Hahn, Dietbert and Wendel, Frank}, title = {Extensive craniocervical bone pneumatization}, series = {Diagnostic and Interventional Radiology}, volume = {17}, journal = {Diagnostic and Interventional Radiology}, number = {4}, doi = {10.4261/1305-3825.DIR.4299-11.2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-139349}, pages = {308-310}, year = {2011}, abstract = {We report a case of extensive abnormal craniocervical bone pneumatization accidentally found in a patient without any history of trauma or surgery. The patient had only mild unspecific thoracic pain and bilateral paresthesia that did not correlate with computed tomography findings.}, language = {en} } @phdthesis{Boeck2018, author = {B{\"o}ck, Lena}, title = {Evaluation der pr{\"a}operativen Ausdehnungsbestimmung ductaler Carcinomata in situ mittels hochaufl{\"o}sender 3-Tesla MR-Mammographie}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-169153}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2018}, abstract = {Zusammenfassend l{\"a}sst sich sagen, dass auch in dieser Studie die MRT bewiesen hat, dass sie eine Diagnostik ist, die aufgrund ihrer vielen Vorteile (r{\"o}ntgenstrahlenfrei, schmerzfrei, hochaufl{\"o}sende Diagnostik) der konventionellen Mammographie {\"u}berlegen ist. Im Vergleich mit anderen diagnostischen M{\"o}glichkeiten, weist die MRT die h{\"o}chsten Sensitivit{\"a}ten auf. Viele falsch positive Befunde k{\"o}nnten so vermieden werden und unn{\"o}tige Biopsien umgangen werden. Die MRT zeigte in dieser Studie eine Sensitivit{\"a}t von 78\%, f{\"u}r reine DCIS 76\%. Die in der pr{\"a}operativen MR-Diagnostik gemessenen Gr{\"o}ßen korrelierten statistisch signifikant mit der histologisch bestimmten Gr{\"o}ße f{\"u}r alle Gruppen (reines DCIS, begleitendes DCIS, mikroinvasives DCIS) zusammen genommen (c=0,378; p<0,01) sowie f{\"u}r reine DCIS (c=0,403; p<0,05). Desweiteren korrelierten die Gr{\"o}ßen statistisch signifikant f{\"u}r high-grade DCIS (c=0,493; p<0,05) und f{\"u}r Nekrosen positive DCIS (c=0,556; p<0,01). Hier ließen sich die Tumorgr{\"o}ßen verl{\"a}sslich vorhersagen. In der Auswertung der Signalintensit{\"a}ts-Zeit-Kurven zeigten sich signifikante Unterschiede zwischen den Gruppen hinsichtlich der initialen (p<0,05) und postinitialen Phase (p<0,01). So l{\"a}sst sich anhand der KM-Kinetik eine Aussage {\"u}ber die Malignit{\"a}t treffen. Ein reines DCIS zeigte typischerweise eine initiale Phase mit einem KM-Anstieg von 50-100\% oder >100\%, gefolgt von einer Plateau-Phase. Ein invasives Carcinom begleitendes DCIS zeichnete sich durch einen raschen Anstieg >100\% gefolgt von einem „wash-out" und einem inhomogenen, unbegrenzten Anreicherungsverhalten aus. Mikrovinvasive DCIS zeigten {\"a}hnlich den reinen DCIS einen initialen Anstieg von 50-100\% sowie eine folgende Plateau-Phase. Keinen statistisch signifikanten Einfluss hatte die pr{\"a}operative Gr{\"o}ßenbestimmung auf das operativen Verfahren (BET vs. Ablatio). Trotz der pr{\"a}operativen MRT waren zu 29,6 \% Nachresektionen - davon ca. die H{\"a}lfte (14,1\%) als sekund{\"a}re Ablatio - n{\"o}tig. Mit der MRT ließen sich grunds{\"a}tzlich verl{\"a}ssliche pr{\"a}operative Vorhersagen hinsichtlich Gr{\"o}ße und Malignit{\"a}t treffen. Signalintensit{\"a}ts-Zeit-Kurven und h{\"o}here Feldst{\"a}rken, wie die 3T-MRT, k{\"o}nnten sehr hilfreich sein und die Sensitivit{\"a}t und Spezifit{\"a}t verbessern. Warum trotz allem noch so viele Nachresektionen n{\"o}tig sind, gilt es in folgenden Studien zu untersuchen.}, subject = {DCIS}, language = {de} } @phdthesis{Sauerburger2018, author = {Sauerburger, Laura}, title = {Diffusionsgewichtete MRT bei p{\"a}diatrischen Patienten mit Morbus Crohn}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-167851}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2018}, abstract = {Durch Weiterentwicklungen der MR-Technologie hat die diffusionsgewichtete MRT in der Bildgebung des Abdomens zunehmend an Bedeutung gewonnen. Einige wenige Studien zeigten bereits vielversprechende Ergebnisse f{\"u}r den Einsatz der DWI in der Diagnostik und Verlaufsbeurteilung des Morbus Crohn. Ziel dieser Arbeit war es, zu untersuchen, ob die DWI zur Detektion entz{\"u}ndlicher Darmwandl{\"a}sionen und extraluminaler Komplikationen bei p{\"a}diatrischen Patienten mit Morbus Crohn ebenso geeignet ist wie die kontrastmittelverst{\"a}rkte MRT. Hierzu wurden retrospektiv die klinischen und MR-tomographischen Daten von 48 Kindern, Jugendlichen und jungen Erwachsenen mit Morbus Crohn sowie von 42 Kontrollpatienten ausgewertet, bei denen im Zeitraum zwischen Juli 2008 und Mai 2013 eine MRT-Untersuchung durchgef{\"u}hrt wurde. Aktuelle Befunde einer Ileokoloskopie waren als Referenz bei 60\% der Morbus Crohn Patienten und bei etwa einem Drittel der Patienten der Kontrollgruppe vorhanden. Das Bestehen eines Morbus Crohn konnte bei 47 der insgesamt 48 Patienten anhand der diffusionsgewichteten Sequenzen und in 46 F{\"a}llen mittels der kontrastverst{\"a}rkten T1w-Aufnahmen korrekt nachgewiesen werden. Extramurale Komplikationen wie Abszesse oder Fisteln konnten sowohl mittels DWI als auch durch die KM-MRT detektiert werden. Da die DWI weder eine intraven{\"o}se Kontrastmittelapplikation noch Atemanhaltetechniken erfordert, ist sie gerade bei p{\"a}diatrischen Patienten ein geeignetes Bildgebungsverfahren. Wegen der relativ geringen Ortsaufl{\"o}sung der diffusionsgewichteten Sequenzen sollte jedoch zus{\"a}tzlich eine Standardsequenz, wie die T2-gewichtete HASTE-Sequenz, akquiriert werden. Nach den Ergebnissen dieser Studie ist die diffusionsgewichtete MRT zur Beurteilung der entz{\"u}ndlichen Ver{\"a}nderungen des Morbus Crohn sehr gut geeignet und besitzt das Potenzial, nicht nur erg{\"a}nzend, sondern als Alternative zur KM-MRT zum Einsatz zu kommen.}, subject = {DW-MRI}, language = {de} } @phdthesis{Langhammer2018, author = {Langhammer, Romy}, title = {Metabolomic Imaging for Human Prostate Cancer Detection using MR Spectroscopy at 7T}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-165772}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2018}, abstract = {BACKGROUND. Prostate cancer (PCa) remains a major health concern in men of the Western World. However, we still lack effective diagnostic tools a) for an effective screening with both high sensitivity and specificity, b) to guide biopsies and avoid histology sampling errors and c) to predict tumor aggressiveness in order to avoid overtreatment. Therefore, a more reliable, highly cancer-specific and ideally in vivo approach is needed. The present study has been designed in order to further develop and test the method of "metabolomic imaging" using magnetic resonance spectroscopy (MRS) at 7T to address those challenges. METHODS. Thirty whole prostates with biopsy-proven PCa were in vitro analyzed with a 7T human MR scanner. A voxel grid containing the spectral information was overlaid with the MR image of the middle transverse cross-sectional plane of each case. Subsequent histopathological evaluation of the prostate specimen followed. After the spectral output was processed, all voxels were compared with a metabolomic PCa profile, which had been established within a preliminary study, in order to create a metabolomic map indicating MRS cancer-suspicious regions. Those regions were compared with the histologically identified tumor lesions regarding location. RESULTS. Sixty-one percent of the histological cancer lesions were detected by metabolomic imaging. Among the cases with PCa on the examined slice, 75\% were identified as cancerous. None of the tested features significantly differed between detected and undetected cancer lesions. A defined "Malignancy Index" (MI) significantly differentiated between MRS-suspicious lesions corresponding with a histological cancer lesion and benign lesions (p = 0.006) with an overall accuracy of 70\%. The MI furthermore showed a positive correlation with the Gleason grade (p = 0.021). CONCLUSION. A new approach within PCa diagnostics was developed with spectral analysis including the whole measureable metabolome - referred to as "metabolomics" - rather than focusing on single metabolites. The MI facilitates precise tumor detection and may additionally serve as a marker for tumor aggressiveness. Metabolomic imaging might contribute to a highly cancer-specific in vivo diagnostic protocol for PCa.}, subject = {Prostatakrebs}, language = {en} } @article{OderUeceylerLiuetal.2016, author = {Oder, Daniel and {\"U}ceyler, Nurcan and Liu, Dan and Hu, Kai and Petritsch, Bernhard and Sommer, Claudia and Ertl, Georg and Wanner, Christoph and Nordbeck, Peter}, title = {Organ manifestations and long-term outcome of Fabry disease in patients with the GLA haplotype D313Y}, series = {BMJ Open}, volume = {6}, journal = {BMJ Open}, doi = {10.1136/bmjopen-2015-010422}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-161210}, pages = {e010422}, year = {2016}, abstract = {Objectives: The severity of Fabry disease is dependent on the type of mutation in the α-galactosidase A (AgalA) encoding gene (GLA). This study focused on the impact of the GLA haplotype D313Y on long-term organ involvement and function. Setting and participants: In this monocentric study, all participants presenting with the D313Y haplotype between 2001 and 2015 were comprehensively clinically investigated at baseline and during a 4-year follow-up if available. Five females and one male were included. Primary and secondary outcome measures: Cardiac, nephrological, neurological, laboratory and quality of life data. Results: AgalA enzyme activity in leucocytes (0.3±0.9 nmol/min/mg protein (mean±SD)) and serum lyso-Gb3 (0.6±0.3 ng/mL at baseline) were in normal range in all patients. Cardiac morphology and function were normal (left-ventricular (LV) ejection fraction 66±8\%; interventricular septum 7.7±1.4 mm; LV posterior wall 7.5±1.4 mm; normalised LV mass in MRI 52±9 g/m2; LV global longitudinal strain -21.6±1.9\%) and there were no signs of myocardial fibrosis in cardiac MRI. Cardiospecific biomarkers were also in normal range. Renal function was not impaired (estimated glomerular filtration rate MDRD 103±15 mL/min; serum-creatinine 0.75±0.07 mg/dL; cystatin-c 0.71±0.12 mg/L). One female patient (also carrying a Factor V Leiden mutation) had a transitory ischaemic attack. One patient showed white matter lesions in brain MRI, but none had Fabry-associated pain attacks, pain crises, evoked pain or permanent pain. Health-related quality of life analysis revealed a reduction in individual well-being. At long-term follow-up after 4 years, no significant change was seen in any parameter. Conclusions: The results of the current study suggest that the D313Y genotype does not lead to severe organ manifestations as seen in genotypes known to be causal for classical FD."}, language = {en} } @phdthesis{Buchberger2018, author = {Buchberger, Miriam}, title = {Stellenwert der Computertomographie im Staging der Sigmadivertikulitis}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-162486}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2018}, abstract = {Zielsetzung: Wie genau kann die Computertomographie die einzelnen Stadien der Sigmadivertikulitis abbilden? Inwieweit ist eine {\"U}bereinstimmung befunderabh{\"a}ngig? Material und Methoden: Grundlage dieser Arbeit waren die Daten von 91 Patienten (43 M{\"a}nner und 48 Frauen, Durchschnittalter: 60,4 Jahre), die im Zeitraum August 2008 bis Mai 2010 aufgrund einer Sigmadivertikulitis operiert wurden. Das pr{\"a}therapeutisch mittels Computertomographie (Hansen und Stock-Klassifikation)diagnostizierte Stadium wurde mit dem histopathologisch bestimmten Stadium auf eine {\"U}bereinstimmung hin verglichen. Zudem wurden alle CT-Bilder von einem zweiten Radiologen nachbefundet und auf eine {\"U}bereinstimmung mit dem Befund des Erstbefunders verglichen. Ergebnisse: Die Sensitivit{\"a}t f{\"u}r das phlegmon{\"o}se Stadium (H\&S IIA) lag bei 83,3\%, f{\"u}r das Stadium der gedeckten Perforation (H\&S IIB) bei 71,4\% und 72,7\% f{\"u}r das chronisch-rezidivierende Stadium (H\&S III). Die Spezifit{\"a}t lag bei 83,5\% f{\"u}r Stadium IIA, 81,0\% f{\"u}r Stadium IIB und 92,7\% f{\"u}r Stadium III. Die Sensitivit{\"a}t und Spezifit{\"a}t f{\"u}r Stadium IIC (freie Perforation) lag bei 100\%. Bei zehn Patienten kam es seitens der Computertomographie zu einer Untersch{\"a}tzung des Entz{\"u}ndungsausmaßes: hier wurde anhand der CT ein histopathologisch verifiziertes Stadium IIB als Stadium IIA klassifiziert. Der Kappa-Wert der Zwischenbeobachter-Korrelation lag bei 0,598. Zusammenfassung: Die Computertomographie ist insgesamt ein zuverl{\"a}ssiges radiologisches Verfahren in der Diagnostik der einzelnen Divertikulitis-Stadien, zeigt aber, insbesondere in der Diagnostik des Stadiums IIB Defizite im Sinne einer Untersch{\"a}tzung des Entz{\"u}ndungsausmaßes. Auch die moderate Zwischenbeobachter-{\"U}bereinstimmung hebt m{\"o}gliche Defizite der CT im Staging der Sigmadivertikulitis hervor.}, subject = {Divertikulitis}, language = {de} } @phdthesis{Laubmeier2018, author = {Laubmeier, Mona}, title = {Wertigkeit der Multidetektorcomputertomographie in der pr{\"a}operativen Diagnostik des Pankreaskarzinoms}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159789}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2018}, abstract = {Das Pankreaskarzinom stellt mit seiner schlechten Prognose und der Schwierigkeit, es in fr{\"u}hem Stadium zu erkennen, eine große Herausforderung f{\"u}r die Medizin dar. Es gibt zahlreiche diagnostische M{\"o}glichkeiten f{\"u}r die Detektion und das Staging dieses Malignoms. Hierf{\"u}r hat sich als Mittel der ersten Wahl in den letzten Jahren die MD-Computertomographie bew{\"a}hrt. Das Ziel dieser Arbeit war es, die Treffsicherheit der Computertomographie f{\"u}r die Detektion als auch f{\"u}r die Einstufung der pr{\"a}operativen Resektabilit{\"a}t zu bestimmen und herauszufinden, wo Fehlerquellen in der Bildbefundung liegen, um diese in Zukunft verbessern bzw. vermeiden zu k{\"o}nnen. Hierf{\"u}r wurden 83 Patienten mit prim{\"a}rem Verdacht auf ein Pankreaskarzinom in die Studie einbezogen und die pr{\"a}operativ erstellen Bilder retrospektiv befundet. Dabei ergaben sich Werte f{\"u}r die Sensitivit{\"a}t der Tumordetektion von 94 \% und f{\"u}r die Spezifit{\"a}t von 43,75 \%. Die Sensitivit{\"a}t zur Einsch{\"a}tzung der Resektabili{\"a}t eines Pankreaskarzinoms mit Hilfe des CTs in dieser Studie betr{\"a}gt 64 \% und die Spezifit{\"a}t 97,30 \%. Die Ergebnisse an der Universit{\"a}t W{\"u}rzburg sind damit vergleichbar mit den Ergebnissen anderer Untersuchungen an anderen Zentren. Trotz der hohen Bildqualit{\"a}t der Multidetektorcomputertomographie war es schwierig, eine chronische Pankreatitis von einem Karzinom zu unterscheiden. Besonders wichtig, vor allem in Zusammenarbeit mit der Visceralchirurgie, ist es, pr{\"a}operativ festzulegen, ob der Tumor noch resektabel ist, um unn{\"o}tig aufw{\"a}ndige Operationen zu vermeiden und Patienten mit resektablem Tumor die Chance auf eine potentiell kurative Therapie nicht zu verwehren. Ein in der Bildgebung prim{\"a}r irresektabel eingestufter Befund war mit fast 100 \% auch tats{\"a}chlich irresektabel. Dagegen stellten sich 20 \% der initital als resektabel eingestuften Befunde intraoperativ als irresektabel dar. Als Hauptursachen der falsch eingestuften Befunde fanden sich in dieser Studie Probleme in der Detektion eines arteriellen Gef{\"a}ßbefalls, kleiner Lebermetastasen oder einer Peritonealkarzinose. Zu {\"a}hnlichen Ergebnissen kommen auch andere Autoren. Auch in Zukunft wird trotz weiterer technischer Fortschritte in der Schnittbildgebung eine sichere Unterscheidung wahrscheinlich nicht immer m{\"o}glich sein. Folglich gilt es im pr{\"a}operativen Staging des Pankreaskarzinoms, gr{\"o}ßtm{\"o}gliche Sorgfalt walten zu lassen. Dies beinhaltet, so genau wie m{\"o}glich, auf Hinweise zur Unterscheidung einer chronischen Pankreatitis, eines Karzinoms und der erw{\"a}hnten Irresektabilit{\"a}tskriterien zu achten. So wird im Rahmen, der durch technische M{\"o}glichkeiten gegebenen Treffsicherheit, ein Maximum an Genauigkeit sichergestellt.}, subject = {Pankreaskarzinom}, language = {de} } @article{GilbertKleinWengetal.2017, author = {Gilbert, Fabian and Klein, Detlef and Weng, Andreas Max and K{\"o}stler, Herbert and Schmitz, Benedikt and Schmalzl, Jonas and B{\"o}hm, Dirk}, title = {Supraspinatus muscle elasticity measured with real time shear wave ultrasound elastography correlates with MRI spectroscopic measured amount of fatty degeneration}, series = {BMC Muscoskeletal Disorders}, volume = {18}, journal = {BMC Muscoskeletal Disorders}, number = {549}, doi = {10.1186/s12891-017-1911-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159378}, year = {2017}, abstract = {Background: Fatty Degeneration (FD) of the rotator cuff muscles influences functional and anatomical outcome after rotator cuff repair. The MRI based estimation of fatty degeneration is the gold standard. There is some evidence that Ultrasound elastography (EUS) can detect local differences of tissue stiffness in muscles and tendons. Shear-wave elastography (SWE) was evaluated to determine the extent to which shear wave velocity was associated with measures of fatty degeneration. MRI-spectroscopic fat measurement was used as a reference to quantify the amount of fat in the muscle belly. Methods: Forty-two patients underwent SWE of the supraspinatus muscles at its thickest diameter. After ultrasound evaluation an MRI-spectroscopic fat measurement of the supraspinatus muscle was performed using the SPLASH-technique. A gel filled capsule was used to locate the measured area in the MRI. The values of shear wave velocity (SWV) measured with SWE and spectroscopic fat measurement were correlated statistically using Pearson's correlation test. Results: Correlation of the fat amount measured with MRI-spectroscopy and the SWV measured with SWE was ρ =0.82. Spectroscopic measured fat ratio of the supraspinatus muscle ranged from 0\% to 77.41\% and SWV from 1.59 m/s to 5.32 m/s. In 4 patients no sufficient SWE could be performed, these individuals showed a larger diameter of the overlying soft tissue. SWV measured with SWE showed a good correlation with MRI spectroscopic fat amount of the supraspinatus muscle. Conclusion: These preliminary data suggest that SWE may be a sufficient tool in detecting and estimating the amount of fatty degeneration in the supraspinatus muscle in real time. Large overlying soft tissue may be a limitation in performing sufficient EUS.}, language = {en} } @article{VeldhoenBehzadiLenzetal.2017, author = {Veldhoen, Simon and Behzadi, Cyrus and Lenz, Alexander and Henes, Frank Oliver and Rybczynski, Meike and von Kodolitsch, Yskert and Bley, Thorsten Alexander and Adam, Gerhard and Bannas, Peter}, title = {Non-contrast MR angiography at 1.5 Tesla for aortic monitoring in Marfan patients after aortic root surgery}, series = {Journal of Cardiovascular Magnetic Resonance}, volume = {19}, journal = {Journal of Cardiovascular Magnetic Resonance}, number = {82}, doi = {10.1186/s12968-017-0394-y}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158693}, year = {2017}, abstract = {Background: Contrast-enhanced cardiovascular magnetic resonance angiography (CE-CMRA) is the established imaging modality for patients with Marfan syndrome requiring life-long annual aortic imaging before and after aortic root replacement. Contrast-free CMRA techniques avoiding side-effects of contrast media are highly desirable for serial imaging but have not been evaluated in the postoperative setup of Marfan patients. The purpose of this study was to assess the feasibility of non-contrast balanced steady-state free precession (bSSFP) magnetic resonance imaging for aortic monitoring of postoperative patients with Marfan syndrome. Methods: Sixty-four adult Marfan patients after aortic root replacement were prospectively included. Fourteen patients (22\%) had a residual aortic dissection after surgical treatment of type A dissection. bSSFP imaging and CE-CMRA were performed at 1.5 Tesla. Two radiologists evaluated the images regarding image quality (1 = poor, 4 = excellent), artifacts (1 = severe, 4 = none) and aortic pathologies. Readers measured the aortic diameters at defined levels in both techniques. Statistics included observer agreement for image scoring and diameter measurements and ROC analyses for comparison of the diagnostic performance of bSSFP and CE-CMRA. Results: Both readers observed no significant differences in image quality between bSSFP and CE-CMRA and found a median image quality score of 4 for both techniques (all p > .05). No significant differences were found regarding the frequency of image artifacts in both sequences (all p > .05). Sensitivity and specificity for detection of aortic dissections was 100\% for both readers and techniques. Compared to bSSFP imaging, CE-CMRA resulted in higher diameters (mean bias, 0.9 mm; p < .05). The inter-observer biases of diameter measurements were not significantly different (all p > .05), except for the distal graft anastomosis (p = .001). Using both techniques, the readers correctly identified a graft suture dehiscence with aneurysm formation requiring surgery. Conclusion: Unenhanced bSSFP CMR imaging allows for riskless aortic monitoring with high diagnostic accuracy in Marfan patients after aortic root surgery.}, language = {en} } @article{SauerLiHollWiedenetal.2017, author = {Sauer, Alexander and Li, Mengxia and Holl-Wieden, Annette and Pabst, Thomas and Neubauer, Henning}, title = {Readout-segmented multi-shot diffusion-weighted MRI of the knee joint in patients with juvenile idiopathic arthritis}, series = {Pediatric Rheumatology}, volume = {15}, journal = {Pediatric Rheumatology}, number = {73}, doi = {10.1186/s12969-017-0203-z}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158095}, year = {2017}, abstract = {Background: Diffusion-weighted MRI has been proposed as a new technique for imaging synovitis without intravenous contrast application. We investigated diagnostic utility of multi-shot readout-segmented diffusion-weighted MRI (multi-shot DWI) for synovial imaging of the knee joint in patients with juvenile idiopathic arthritis (JIA). Methods: Thirty-two consecutive patients with confirmed or suspected JIA (21 girls, median age 13 years) underwent routine 1.5 T MRI with contrast-enhanced T1w imaging (contrast-enhanced MRI) and with multi-shot DWI (RESOLVE, b-values 0-50 and 800 s/mm\(^2\)). Contrast-enhanced MRI, representing the diagnostic standard, and diffusion-weighted images at b = 800 s/mm\(^2\) were separately rated by three independent blinded readers at different levels of expertise for the presence and the degree of synovitis on a modified 5-item Likert scale along with the level of subjective diagnostic confidence. Results: Fourteen (44\%) patients had active synovitis and joint effusion, nine (28\%) patients showed mild synovial enhancement not qualifying for arthritis and another nine (28\%) patients had no synovial signal alterations on contrast-enhanced imaging. Ratings by the 1st reader on contrast-enhanced MRI and on DWI showed substantial agreement (κ = 0.74). Inter-observer-agreement was high for diagnosing, or ruling out, active arthritis of the knee joint on contrast-enhanced MRI and on DWI, showing full agreement between 1st and 2nd reader and disagreement in one case (3\%) between 1st and 3rd reader. In contrast, ratings in cases of absent vs. little synovial inflammation were markedly inconsistent on DWI. Diagnostic confidence was lower on DWI, compared to contrast-enhanced imaging. Conclusion: Multi-shot DWI of the knee joint is feasible in routine imaging and reliably diagnoses, or rules out, active arthritis of the knee joint in paediatric patients without the need of gadolinium-based i.v. contrast injection. Possibly due to "T2w shine-through" artifacts, DWI does not reliably differentiate non-inflamed joints from knee joints with mild synovial irritation.}, language = {en} } @article{ZellerHeidemeierGrigoleitetal.2017, author = {Zeller, Daniel and Heidemeier, Anke and Grigoleit, G{\"o}tz Ulrich and M{\"u}llges, Wolfgang}, title = {Case report: subacute tetraplegia in an immunocompromised patient}, series = {BMC Neurology}, volume = {17}, journal = {BMC Neurology}, number = {31}, doi = {10.1186/s12883-017-0814-5}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157576}, year = {2017}, abstract = {Background: Clinical reasoning in Neurology is based on general associations which help to deduce the site of the lesion. However, even "golden principles" may occasionally be deceptive. Here, we describe the case of subacute flaccid tetraparesis due to motor cortical lesions. To our knowledge, this is the first report to include an impressive illustration of nearly symmetric motor cortical involvement of encephalitis on brain MRI. Case presentation: A 51 year old immunocompromized man developed a high-grade pure motor flaccid tetraparesis over few days. Based on clinical presentation, critical illness polyneuromyopathy was suspected. However, brain MRI revealed symmetrical hyperintensities strictly limited to the subcortical precentral gyrus. An encephalitis, possibly due to CMV infection, turned out to be the most likely cause. Conclusion: While recognition of basic clinical patterns is indispensable in neurological reasoning, awareness of central conditions mimicking peripheral nervous disease may be crucial to detect unsuspected, potentially treatable conditions.}, language = {en} } @phdthesis{Kurre2018, author = {Kurre, Corinna}, title = {Single-Center Erfahrungen bez{\"u}glich des Einsatzes eines „Cutting Balloon Katheters" (= perkutane transluminale Blade-Angioplastie) bei Patienten mit stenosierten H{\"a}modialyseshunts}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-138120}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2018}, abstract = {Ziel der Arbeit Die vorliegende Arbeit spiegelt Erfahrungen bez{\"u}glich des Einsatzes von Cutting Balloon Kathetern in stenosierten H{\"a}modialyseshunts im Institut f{\"u}r Diagnostische und Interventionelle Radiologie der Universit{\"a}tsklinik W{\"u}rzburg wider. Ziel war vor allem die Erfassung der technischen und klinischen Erfolgsrate sowie die Untersuchung der prim{\"a}ren Offenheitsraten unter verschiedenen Gesichtspunkten und der Komplikationsrate. Patienten, Material, Methoden Zwischen Mai 2006 und Oktober 2010 wurden 44 Interventionen an chronisch niereninsuffizienten Patienten mit stenosierten Dialyseshunts mittels Cutting Balloon Kathetern durchgef{\"u}hrt. Diese wurden retrospektiv ausgewertet. 26 Patienten waren m{\"a}nnlich, 18 weiblich. Das Durchschnittsalter zum Zeitpunkt der PTA betrug 66,2 Jahre (±13,3 Jahre). 38 der 44 Patienten erreichten das Follow Up von 450 Tagen. Bei den Interventionen kamen neben den Peripheral Cutting Balloons® (Boston Scientific Corporation, Natick, MA, USA) (n=45) auch konventionelle Ballonkatheter (n=77) und Hochdruckballonkatheter (n=2) zum Einsatz. Betrachtet wurden der technische, klinische und h{\"a}modynamische Erfolg, die prim{\"a}ren Offenheitsraten nach 30, 60 und 180 Tagen unter verschiedenen Gesichtspunkten sowie die Komplikationsrate. Ergebnisse In neun F{\"a}llen konnte durch die DSA der Nachweis von mehr als einer Stenose ausgemacht werden. Insgesamt wurden 62 Stenosen diagnostiziert, wovon 52 mittels Cutting Balloons behandelt wurden. Die Stenosen, welche mittels Cutting Balloons behandelt wurden, wiesen im Mittel eine L{\"a}nge von 2,6 cm (±2,1 cm) auf. Der technische Erfolg lag bei 100\%. Die klinische Erfolgsrate lag bei 92,9\%. H{\"a}modynamischer Erfolg konnte in 65,9\% der F{\"a}lle erzielt werden. Die prim{\"a}re Offenheitsrate betrug im Mittel 178,2 Tage (±22,8). Sie betrug nach 30 Tagen 88,6\%, nach 90 Tagen 68,2\% und nach 180 Tagen 36,4\%. Bei den Patienten mit autologen Shunts betrug die prim{\"a}re Offenheitsrate im Mittel 215,0 Tage (±27,3). Sie betrug in diesem Patientenkollektiv nach 30 Tagen 90,9\%, nach 90 Tagen 78,8\% und nach 180 Tagen 48,5\%. Bei den Patienten mit alloplastischen Shunts lag die prim{\"a}re Offenheitsrate im Schnitt bei 67,8 Tagen (±12,0). Sie betrug hier nach 30 Tagen 81,8\%, nach 90 Tagen 36,4\% und nach 180 Tagen 0\%. Der Unterschied der prim{\"a}ren Offenheitsraten war f{\"u}r autologe vs. alloplastische Shunts statistisch signifikant (p=0,002). Die prim{\"a}re Offenheitsrate betrug im Mittel bei Patienten mit Diabetes mellitus 248,5 Tage (±42,2). Sie betrug in diesem Patientenkollektiv nach 30 Tagen 88,2\%, nach 90 Tagen 76,5\% und nach 180 Tagen 52,9\%. Bei Patienten ohne Diabetes mellitus lag die prim{\"a}re Offenheitsrate im Schnitt bei 133,9 Tagen (±22,7). Sie betrug hier nach 30 Tagen 85,2\%, nach 90 Tagen 63,0\% und nach 180 Tagen 25,9\%. Der Unterschied der prim{\"a}ren Offenheitsraten war bei Diabetikern vs. Nicht-Diabetikern statistisch nicht signifikant. Die prim{\"a}re Offenheitsrate betrug im Mittel bei den Patienten mit Dyslipoprotein{\"a}mie 153,6 Tage (±36,9). Sie betrug in diesem Patientenkollektiv nach 30 Tagen 78,9\%, nach 90 Tagen 47,4\% und nach 180 Tagen 31,6\%. Bei den Patienten ohne Dyslipoprotein{\"a}mie lag die prim{\"a}re Offenheitsrate im Schnitt bei 196,9 Tagen (±28,8). Sie betrug hier nach 30 Tagen 96,0\%, nach 90 Tagen 84,0\% und nach 180 Tagen 40,0\%. Der Unterschied der prim{\"a}ren Offenheitsraten war bei Patienten mit vs. Patienten ohne Dyslipoprotein{\"a}mie statistisch signifikant (p=0,009). 90,9\% der Interventionen (n=40) verliefen komplikationslos. In 9,1\% der F{\"a}lle (n=4) traten Komplikationen auf, die gem{\"a}ß den SIR Reporting Standards (62) zu den Minor-Komplikationen z{\"a}hlen. Fazit Die PTA mittels Cutting Balloon Katheter stellt bei hohem technischem und klinischem Erfolg sowie niedriger Komplikationsrate eine effektive Behandlungsmethode stenosierter H{\"a}modialyseshunts dar. Weitere Studien werden ben{\"o}tigt, um im Hinblick auf die Kosten-Nutzen-Relation eindeutige Indikationsstellungen f{\"u}r den Einsatz des Cutting Balloons in dysfunktionellen H{\"a}modialyseshunts zu etablieren.}, subject = {Perkutane transluminale Angioplastie}, language = {de} } @phdthesis{Kowallik2017, author = {Kowallik, Eva-Sophia}, title = {Ausmaß und Korrelation von Late Gadolinium Enhancement, mikrovaskul{\"a}rer Obstruktion und intramyokardialer Einblutung als prognostische Faktoren f{\"u}r das Remodeling bei Patienten nach Myokardinfarkt}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-155782}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2017}, abstract = {Hintergrund Kardiale Magnetresonanztomographie (CMR) kann f{\"u}r den Nachweis und die Bestimmung von Late Gadolinium Enhancement (LGE), mikrovaskul{\"a}rer Obstruktion (MO) und intramyokardialer Einblutung (IMH) genutzt werden. Die Studie hat zum Ziel, den prognostischen Nutzen dieser drei MRT-Parameter bei der Entwicklung linksventrikul{\"a}ren Remodelings nach Myokardinfarkt (MI) zu evaluieren. Methoden Das Studienkollektiv umfasste 55 Patienten (Alter: 56±11 Jahre; Geschlecht: 53 m/2 w), welche nach dem Erstereignis eines Myokardinfarkts durch prim{\"a}re Koronarintervention therapiert wurden. CMR mit Late Gadolinium Enhancement (LGE), First Pass Perfusion (FPP) und T2 gewichteter (T2w) Turbospinecho-Sequenz wurde 72 Stunden und ein Jahr nach MI durchgef{\"u}hrt. Linksventrikul{\"a}res Remodeling wird dabei als Anstieg des enddiastolischen Volumens um ≥ 20\% und/oder einem Abfall der Ejektionsfraktion um > 10\% definiert. Ergebnisse Late Gadolinium Enhancement ist eine effektive Methode, um die Infarktgr{\"o}ße zu bestimmen. Dabei zeigten 77,70 \% der Patienten mit linksventrikul{\"a}rem Remodeling eine Infarktgr{\"o}ße die 20 \% der linksventrikul{\"a}ren Masse {\"u}berschritt. Als ein Teilaspekt der vorliegenden Studie wurden die Patienten in drei Gruppen anhand der Ergebnisse ihrer Koronarintervention unterteilt (RIVA: n= 26; RCA: n= 20; RCX: n = 8). In der Jahresuntersuchung wiesen Patienten mit Vorderwandinfarkt eine niedrigere Ejektionsfraktion, einen signifikanten Anstieg des enddiastolischen Volumens und eine gr{\"o}ßere Infarktgr{\"o}ße als Probanden mit anderen Infarktlokalisationen auf. Ungef{\"a}hr die H{\"a}lfte aller Remodelingpatienten erlitt einen Verschluss der RIVA. Mikrovaskul{\"a}re Obstruktion kann sowohl in der LGE Sequenz, als auch in der First Pass Perfusion nachgewiesen werden. In dieser Studie zeigt sich, dass die Gr{\"o}ße der MO in der LGE Sequenz 80 \% kleiner als in der FPP ausfiel. Dennoch besitzt die Anwesenheit der MO in der LGE Sequenz den gr{\"o}ßeren prognostischen Wert, da hier vor allem die ausgepr{\"a}gten Areale der mikrovaskul{\"a}ren Obstruktion zur Darstellung kommen und Patienten mit diesen gef{\"a}hrdeter sind, ventrikul{\"a}res Remodeling zu entwickeln. Patienten mit MO (= MO (+)) (FPP: n= 42; LGE: n=27) besaßen eine kleinere Ejektionsfraktion (20 \%), ein gr{\"o}ßeres enddiastolisches Volumen (24 \%) und gr{\"o}ßere Infarktareale (170 \%) in der Jahreskontrolle als Patienten ohne MO (= MO (-)) Intramyokardiale Einblutung wurde bei 29 Patienten (= IMH (+)) beobachtet, welche eine niedrige Ejektionsfraktion (17 \%), ein h{\"o}heres enddiastolisches Volumen (19 \%) und eine gr{\"o}ßere Infarktgr{\"o}ße (180 \%) als Patienten ohne IMH (= IMH (-)) nach einem Jahr aufwiesen. IMH fand sich in 72,15\% der Patienten mit linksventrikul{\"a}rem Remodeling. Zusammenfassung Late Gadolinium Enhancement, mikrovaskul{\"a}re Obstruktion und intramyokardiale Einblutung k{\"o}nnen zur Vorhersage linksventrikul{\"a}ren Remodelings bei Patienten nach Myokardinfarkt verwendet werden. In der vorliegenden Studie waren der Nachweis von MO in der LGE Sequenz und die Anwesenheit von IMH in der T2-Bildgebung die aussagekr{\"a}ftigsten prognostischen Faktoren.}, subject = {MRT}, language = {de} } @phdthesis{Kraus2017, author = {Kraus, Philip}, title = {Verbesserung von Echoplanarer Bildgebung durch Phasenkorrektur}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-154462}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2017}, abstract = {Die Arbeit liefert eine {\"U}bersicht zu m{\"o}glichen Korrekturen dynamischer Off-Resonanzen in dichtegewichteten und kartesischen echoplanaren funktionellen MRT Sequenzen.}, subject = {Kernspintomografie}, language = {de} }