KOBV-Portal

Treffer pro Seite

Treffer 1 - 1 | 1 Treffer

Alles auswählen Exportieren

Online-Ressource

High resolution flat-panel CT arthrography vs. MR arthrography of artificially created osteochondral defects in ex vivo upper ankle joints

Pöhler, Gesa H. ; Sonnow, Lena ; Ettinger, Sarah ; [weitere]

Public Library of Science (PLoS) ; 2021

In: PLOS ONE Vol. 16, No. 8 ( 2021-8-10), p. e0255616-

zur Merkliste hinzufügen auf der Merkliste

Details

In: PLOS ONE, Public Library of Science (PLoS), Vol. 16, No. 8 ( 2021-8-10), p. e0255616-

Kurzfassung: High resolution flat-panel computed tomography arthrography (FPCT-A) and magnetic resonance arthrography (MR-A) are well suited to evaluate osteochondral lesions. The current study compares the performance of FPCT-A versus MR-A in an experimental setting. Methods Fourteen cadaveric ankles were prepared with artificial osteochondral defects of various sizes in four separate talar locations. After intra-articular contrast injection, FPCT-A and 3-T MR-A were acquired. Each defect was then filled with synthetic pallets. The resulting cast was used as reference. Two independent radiologists measured the dimensions of all defects with FPCT-A and MR-A. Intra-class correlation coefficients (ICC) were calculated. Data were compared using t-tests and Bland-Altman plots. Results The correlation for FPCT-A and cast was higher compared to MR-A and cast (ICC 0.876 vs . 0.799 for surface [length x width]; ICC 0.887 vs . 0.866 for depth, p 〈 0.001). Mean differences between FPCT-A and cast measurements were -1.1 mm for length (p 〈 0.001), -0.7 mm for width (p 〈 0.001) and -0.4 mm for depth (p = 0.023). By MR-A, there were no significant differences for length and width compared to cast (p 〉 0.05). Depth measurements were significantly smaller by MR-A (mean difference -1.1 mm, p 〈 0.001). There was no bias between the different modalities. Conclusions Ex vivo FPCT-A and MR-A both deliver high diagnostic accuracy for the evaluation of osteochondral defects. FPCT-A was slightly more accurate than MR-A, which was most significant when measuring lesion depth.

Materialart: Online-Ressource

ISSN: 1932-6203

URL: Article