@article{LuetkensGrunzKunzetal.2023,
  author    = {Luetkens, Karsten Sebastian and Grunz, Jan-Peter and Kunz, Andreas Steven and Huflage, Henner and Weißenberger, Manuel and Hartung, Viktor and Patzer, Theresa Sophie and Gruschwitz, Philipp and Erg{\"u}n, S{\"u}leyman and Bley, Thorsten Alexander and Feldle, Philipp},
  title     = {Ultra-high-resolution photon-counting detector CT arthrography of the ankle: a feasibility study},
  series = {Diagnostics},
  volume    = {13},
  journal   = {Diagnostics},
  number    = {13},
  issn      = {2075-4418},
  doi       = {10.3390/diagnostics13132201},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-362622},
  year      = {2023},
  abstract  = {This study was designed to investigate the image quality of ultra-high-resolution ankle arthrography employing a photon-counting detector CT. Bilateral arthrograms were acquired in four cadaveric specimens with full-dose (10 mGy) and low-dose (3 mGy) scan protocols. Three convolution kernels with different spatial frequencies were utilized for image reconstruction (ρ\(_{50}\); Br98: 39.0, Br84: 22.6, Br76: 16.5 lp/cm). Seven radiologists subjectively assessed the image quality regarding the depiction of bone, hyaline cartilage, and ligaments. An additional quantitative assessment comprised the measurement of noise and the computation of contrast-to-noise ratios (CNR). While an optimal depiction of bone tissue was achieved with the ultra-sharp Br98 kernel (S ≤ 0.043), the visualization of cartilage improved with lower modulation transfer functions at each dose level (p ≤ 0.014). The interrater reliability ranged from good to excellent for all assessed tissues (intraclass correlation coefficient ≥ 0.805). The noise levels in subcutaneous fat decreased with reduced spatial frequency (p \< 0.001). Notably, the low-dose Br76 matched the CNR of the full-dose Br84 (p 0.999) and superseded Br98 (p \< 0.001) in all tissues. Based on the reported results, a photon-counting detector CT arthrography of the ankle with an ultra-high-resolution collimation offers stellar image quality and tissue assessability, improving the evaluation of miniscule anatomical structures. While bone depiction was superior in combination with an ultra-sharp convolution kernel, soft tissue evaluation benefited from employing a lower spatial frequency.},
  language  = {en}
}
@article{ElsnerKunzWagneretal.2023,
  author    = {Elsner, Clara and Kunz, Andreas Steven and Wagner, Nicole and Huflage, Henner and H{\"u}bner, Stefan and Luetkens, Karsten Sebastian and Bley, Thorsten Alexander and Schmitt, Rainer and Erg{\"u}n, S{\"u}leyman and Grunz, Jan-Peter},
  title     = {MRI-based evaluation of the flexor digitorum superficialis anatomy: investigating the prevalence and morphometry of the "chiasma antebrachii"},
  series = {Diagnostics},
  volume    = {13},
  journal   = {Diagnostics},
  number    = {14},
  issn      = {2075-4418},
  doi       = {10.3390/diagnostics13142406},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-362631},
  year      = {2023},
  abstract  = {Recent dissection studies resulted in the introduction of the term "chiasma antebrachii", which represents an intersection of the flexor digitorum superficialis (FDS) tendons for digits 2 and 3 in the distal third of the forearm. This retrospective investigation aimed to provide an MRI-based morphologic analysis of the chiasma antebrachii. In 89 patients (41 women, 39.3 ± 21.3 years), MRI examinations of the forearm (2010-2021) were reviewed by two radiologists, who evaluated all studies for the presence and length of the chiasma as well as its distance from the distal radioulnar and elbow joint. The chiasma antebrachii was identified in the distal third of the forearm in 88 patients (98.9\%), while one intersection was located more proximally in the middle part. The chiasma had a median length of 28 mm (interquartile range: 24-35 mm). Its distances to the distal radioulnar and elbow joint were 16 mm (8-25 mm) and 215 mm (187-227 mm), respectively. T1-weighted post-contrast sequences were found to be superior to T2- or proton-density-weighted sequences in 71 cases (79.8\%). To conclude, the chiasma antebrachii is part of the standard FDS anatomy. Knowledge of its morphology is important, e.g., in targeted injections of therapeutics or reconstructive surgery.},
  language  = {en}
}
@article{KosmalaGruschwitzVeldhoenetal.2020,
  author    = {Kosmala, Aleksander and Gruschwitz, Philipp and Veldhoen, Simon and Weng, Andreas Max and Krauss, Bernhard and Bley, Thorsten Alexander and Petritsch, Bernhard},
  title     = {Dual-energy CT angiography in suspected pulmonary embolism: influence of injection protocols on image quality and perfused blood volume},
  series = {The International Journal of Cardiovascular Imaging},
  volume    = {36},
  journal   = {The International Journal of Cardiovascular Imaging},
  number    = {10},
  issn      = {1569-5794},
  doi       = {10.1007/s10554-020-01911-8},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-314739},
  pages     = {2051-2059},
  year      = {2020},
  abstract  = {Abstract To compare intravenous contrast material (CM) injection protocols for dual-energy CT pulmonary angiography (CTPA) in patients with suspected acute pulmonary embolism with regard to image quality and pulmonary perfused blood volume (PBV) values. A total of 198 studies performed with four CM injection protocols varying in CM volume and iodine delivery rates (IDR) were retrospectively included: (A) 60 ml at 5 ml/s (IDR = 1.75gI/s), (B) 50 ml at 5 ml/s (IDR = 1.75gI/s), (C) 50 ml at 4 ml/s (IDR = 1.40gI/s), (D) 40 ml at 3 ml/s (IDR = 1.05gI/s). Image quality and PBV values at different resolution settings were compared. Pulmonary arterial tract attenuation was highest for protocol A (397 ± 110 HU; p vs. B = 0.13; vs. C = 0.02; vs. D < 0.001). CTPA image quality of protocol A was rated superior compared to protocols B and D by reader 1 (p = 0.01; < 0.001), and superior to protocols B, C and D by reader 2 (p < 0.001; 0.02; < 0.001). Otherwise, there were no significant differences in CTPA quality ratings. Subjective iodine map ratings did not vary significantly between protocols A, B, and C. Both readers rated protocol D inferior to all other protocols (p < 0.05). PBV values did not vary significantly between protocols A and B at resolution settings of 1, 4 and 10 (p = 0.10; 0.10; 0.09), while otherwise PBV values displayed a decreasing trend from protocol A to D (p < 0.05). Higher CM volume and IDR are associated with superior CTPA and iodine map quality and higher absolute PBV values.},
  language  = {en}
}
@misc{KosmalaGruschwitzVeldhoenetal.2022,
  author    = {Kosmala, Aleksander and Gruschwitz, Philipp and Veldhoen, Simon and Weng, Andreas Max and Krauss, Bernhard and Bley, Thorsten Alexander and Petritsch, Bernhard},
  title     = {Correction to: Dual-energy CT angiography in suspected pulmonary embolism: infuence of injection protocols on image quality and perfused blood volume},
  series = {The International Journal of Cardiovascular Imaging},
  volume    = {38},
  journal   = {The International Journal of Cardiovascular Imaging},
  number    = {3},
  doi       = {10.1007/s10554-021-02439-1},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-350830},
  pages     = {707},
  year      = {2022},
  abstract  = {No abstract available.},
  language  = {en}
}