TY  - THES
A1  - Scholtka, Jacqueline
T1  - Symptome und Befund der pulmonalen Sarkoidose. Eine retrospektive Verlaufsbeobachtung
T1  - Symptoms and findings in pulmonary sarcoidosis. A retrospective follow-up
N2  - 131 Patienten mit Sarkoidose der Medizinischen Klinik und Poliklinik I in Würzburg wurden rückblickend anhand der vorliegenden Krankenakten untersucht. Hierbei wurden insbesondere Daten zu Symptomen, Laboruntersuchungen, Lungenfunktionsuntersuchungen sowie radiologischen Untersuchungen gesammelt und ausgewertet. Es wird ein allgemeiner Überblick über die Häufigkeit der einzelnen Symptombereiche sowie Untersuchungsbefunde gegeben. Des weiteren wird anhand eines Bewertungsscores der Erkrankungsverlauf der Patienten abgebildet.
N2  - 131 patients with sarcoidosis from the medical clinic I in Würzburg were followed up retrospectively based on patient records. In particular, data concerning clinical symptoms, laboratory findings, pulmonary function test results and radiological findings were collected and evaluated. The frequency of different categories of symptoms and findings is reviewed in general.Furthermore by using a scoring system the patients disease course is depicted.
KW  - Sarkoidose
KW  - Verlauf
KW  - Krankheitsverlauf
KW  - Befund
KW  - Symptome
KW  - retrospektiv
KW  - Verlaufsbeobachtung
KW  - symptoms
KW  - retrospective
KW  - follow-up
Y1  - 2011
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-72122
ER  - 
TY  - JOUR
A1  - Winter, Patrick
A1  - Kampf, Thomas
A1  - Helluy, Xavier
A1  - Gutjahr, Fabian T.
A1  - Meyer, Cord B.
A1  - Rommel, Eberhard
A1  - Bauer, Wolfgang R.
A1  - Jakob, Peter M.
A1  - Herold, Volker
T1  - Fast retrospectively triggered local pulse-wave velocity measurements in mice with CMR-microscopy using a radial trajectory
JF  - Journal of Cardiovascular Magnetic Resonance
N2  - Background

The aortic pulse-wave velocity (PWV) is an important indicator of cardiovascular risk. In recent studies MRI methods have been developed to measure this parameter noninvasively in mice. Present techniques require additional hardware for cardiac and respiratory gating. In this work a robust self-gated measurement of the local PWV in mice without the need of triggering probes is proposed.

Methods

The local PWV of 6-months-old wild-type C57BL/6J mice (n=6) was measured in the abdominal aorta with a retrospectively triggered radial Phase Contrast (PC) MR sequence using the flow-area (QA) method. A navigator signal was extracted from the CMR data of highly asymmetric radial projections with short repetition time (TR=3 ms) and post-processed with high-pass and low-pass filters for retrospective cardiac and respiratory gating. The self-gating signal was used for a reconstruction of high-resolution Cine frames of the aortic motion. To assess the local PWV the volume flow Q and the cross-sectional area A of the aorta were determined. The results were compared with the values measured with a triggered Cartesian and an undersampled triggered radial PC-Cine sequence.

Results

In all examined animals a self-gating signal could be extracted and used for retrospective breath-gating and PC-Cine reconstruction. With the non-triggered measurement PWV values of 2.3±0.2 m/s were determined. These values are in agreement with those measured with the triggered Cartesian (2.4±0.2 m/s) and the triggered radial (2.3±0.2 m/s) measurement. Due to the strong robustness of the radial trajectory against undersampling an acceleration of more than two relative to the prospectively triggered Cartesian sampling could be achieved with the retrospective method.

Conclusion

With the radial flow-encoding sequence the extraction of a self-gating signal is feasible. The retrospective method enables a robust and fast measurement of the local PWV without the need of additional trigger hardware.
KW  - pulse-wave velocity
KW  - mouse
KW  - self-gating
KW  - phase-contrast CMR
KW  - non-triggered
KW  - retrospective
KW  - radial
KW  - aorta
Y1  - 2013
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-96602
UR  - http://jcmr-online.com/content/15/1/88
ER  -