MENISCAL CHANGES IN THE ELDERLY - CORRELATION OF MR IMAGING AND HISTOLOGIC-FINDINGS
MENISCAL CHANGES IN THE ELDERLY - CORRELATION OF MR IMAGING AND HISTOLOGIC-FINDINGS
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DOI：
10.1148/radiology.184.1.1609084
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发表时间：
1992-07-01
期刊：
影响因子：
19.7
通讯作者：
RESNICK, D
中科院分区：
文献类型：
--
作者：
HODLER, J;HAGHIGHI, P;RESNICK, D
在老年患者中，半月板的退行性变化很常见，可能类似于撕裂。 本文对20例179个膝关节标本的MRI表现与病理组织学及大体病理对照。 标准T1加权自旋回波图像及其相应的椎间盘窗显示椎间盘撕裂的敏感性为80.6%，特异性为72.4%，准确性为76.7%。 这些结果不如以前报告的结果好。 一个主要的困难是撕裂和完整椎间盘中出现3级动脉信号强度和弥漫性动脉内信号强度。 然而，在老年患者中，MR成像仍然是有用的，在诊断腰椎异常。 MRI显示半月板内正常低信号强度，半月板内1级和2级信号强度变化是半月板表面完整的可靠征象。 3级和弥漫性声带信号强度不允许特异性诊断;具有这些特征的声带炎应被描述为退行性，撕裂的可能性很高。
In elderly patients, degenerative changes of the meniscus are common and may mimic a tear. The magnetic resonance (MR) image findings of 179 meniscal sections in 20 cadaver knees were correlated with the histologic and gross pathologic findings. The sensitivity of standard T1-weighted spin-echo images and their corresponding meniscal windows in depicting meniscal tears was 80.6%, specificity was 72.4%, and accuracy was 76.7%. These results are not as good as results reported previously. A major difficulty is the occurrence of grade 3 meniscal signal intensity and diffuse intrameniscal signal intensity in torn and intact menisci. MR imaging in elderly patients, however, is still useful in the diagnosis of meniscal abnormalities. Normal low signal intensity depicted within a meniscus at MR imaging and changes in grades 1 and 2 intrameniscal signal intensity are reliable signs of an intact meniscal surface. Grade 3 and diffuse meniscal signal intensities do not allow a specific diagnosis; menisci with these characteristics should be described as degenerated with a high probability of a tear.