Chondromalacia patellae: an in vitro study
Skeletal Radiology(1996)
摘要
Objective. To develop MR criteria for grades of chondromalacia patellae and to assess the accuracy of these grades. Design. Fat-suppressed T2-weighted double-echo, fat-suppressed T2-weighted fast spin echo, fat-suppressed T1-weighted, and gradient
echo sequences were performed at 1.5 T for the evaluation of chondromalacia. A total of 1000 MR, 200 histologic, and 200 surface
locations were graded for chondromalacia and statistically compared. Results. Compared with gross inspection as well as with histology the most accurate sequences were fat-suppressed T2-weighted conventional
spin echo and fat suppressed T2-weighted fast spin echo, although the T1-weighted and proton density images also correlated
well. The most accurate MR criteria applied to the severe grades of chondromalacia, with less accurate results for lesser
grades. Conclusions. This study demonstrates that fat-suppressed routine T2-weighted and fast spin echo T2-weighted sequences seem to be more accurate
than proton density, T1-weighted, and gradient echo sequences in grading chondromalacia. Good histologic and macroscopic correlation
was seen in more severe grades of chondromalacia, but problems remain for the early grades in all sequences studied.
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关键词
chondromalacia,cartilage,MRI
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