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Congress: ECR25
Poster Number: C-10651
Type: Poster: EPOS Radiologist (scientific)
Authorblock: A. A. Marth1, S. Sommer1, G. W. Kajdi1, S. S. Goller1, T. Feiweier2, R. Sutter1, D. Nanz1, C. Von Deuster1; 1Zurich/CH, 2Erlangen/DE
Disclosures:
Adrian Alexander Marth: Nothing to disclose
Stefan Sommer: Employee: Siemens Healthineers
Georg Wilhelm Kajdi: Nothing to disclose
Sophia Samira Goller: Nothing to disclose
Thorsten Feiweier: Employee: Siemens Healthineers
Reto Sutter: Nothing to disclose
Daniel Nanz: Nothing to disclose
Constantin Von Deuster: Employee: Siemens Healthineers
Keywords: Musculoskeletal soft tissue, MR, MR-Diffusion/Perfusion, Experimental investigations, Technology assessment, Tissue characterisation
Purpose Quantitative assessment of the rotator cuff using various advanced imaging techniques has recently gained interest, with the aim of identifying biomarkers to assist in surgical management following rotator cuff tears [1, 2]. It has been observed that the pennation angle (PA) is sensitive to early pathological muscle changes (i.e., fatty infiltration and musculotendinous retraction) following rotator cuff injury [3, 4] and may be useful to predict the outcome following surgical cuff repair.Therefore, the objective of this study was to develop...
Read more Methods and materials This prospective study was approved by the local institutional review board (Cantonal Ethics Committee, Zurich, Switzerland).MRI data were acquired were performed on a 3-T system (MAGNETOM Prisma, Siemens Healthineers AG, Erlangen, Germany) using a dedicated 16-channel shoulder coil. MRI scans were performed between May and August 2023, and comprised a total of three scans of the same shoulder for each volunteer, with an interval of seven days between the scan sessions, respectively.For the planning of diffusion-weighted imaging, the maximum visible...
Read more Results The mean age of the ten subjects was 32.0 ± 4.7 years (five females; body mass index 23.0 ± 2.6 kg/m2). The mean PA in the anterior SSP was 15.6 ± 2.1°, while for the posterior SSP, the PA was 10.7 ± 0.9°. PAs showed good to excellent test-retest reliability (ICC: 0.856–0.945). Inter-reader agreement was good to excellent (ICC: 0.796–0.955). Similarly, ICCs for intra-reader agreements ranged from good to excellent (ICC: 0.804–0.955). An axial cut with color-coded tractography streamlines depicts the different configurations of the fiber bundles in the...
Read more Conclusion In this study, a method to derive PAs of the SSP muscle from DTI was developed and validated. The proposed approach demonstrated good to excellent test-retest reliability, inter-reader agreement, and intra-reader agreement.The first main finding was that PAs of the SSP as measured with the DTI methods were within the range of those described in the literature [8,9], which depend on the exact anatomical localization within the muscle [8].The present study measured PAs of the anterior portion and posterior portion...
Read more References Rau A, Jungmann PM, Diallo TD et al (2023) Application of diffusion microstructure imaging in musculoskeletal radiology—translation from head to shoulders. Eur Radiol 33:1565–1574 Feuerriegel GC, Marcus RP, Sommer S et al (2023) Fat fractions of the rotator cuff muscles acquired with 2-point dixon MRI: predicting outcome after arthroscopic rotator cuff repair. Invest Radiol 59:328–336 Thompson SM, Reilly P, Emery RJ, Bull AM (2011) An anatomical description of the pennation angles and central tendon angle of the supraspinatus both in its normal...
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