Low field magnetic resonance imaging of the equine distal interphalangeal joint: Comparison between weight-bearing and non-weight-bearing conditions.

摘要: This descriptive study aimed to compare the magnetic resonance appearance of distal interphalangeal joint articular cartilage between standing weight-bearing and non-weight-bearing conditions. Ten forefeet live horses were scanned in a low-field system (0.27 T). After euthanasia for reasons unrelated study, isolated feet vertical positioning reproducing limb orientation horses. The same acquisition settings as during examination used. Thickness cross-sectional area space measured on tridimensional T1-weighted gradient echo high resolution frontal sagittal images at predetermined landmarks both conditions compared using linear mixed-effects model. Frontal randomized submitted 9 blinded readers with 3 different experience levels identification versus acquisitions based appearance. Weight-bearing limbs had significantly thinner (p = 0.0001) than limbs. change was greater phalanx that middle phalanx. Blinded correctly identified 83% (range 65 95%) or acquisitions, results observed among < 0.001) groups 0.001). These indicate particularly thins when postmortem suggest abnormalities may be more difficult identify imaging.