Niitsu M, Anno I, Fukubayashi T, Shimojo H, Kuno S, Akisada M
Department of Radiology, University of Tsukuba, Ibaraki, Japan.
Radiology. 1991 Mar;178(3):859-64. doi: 10.1148/radiology.178.3.1994433.
A cine magnetic resonance (MR) imaging technique, involving the acquisition of kinematic sagittal images during knee movement, was used to evaluate 52 symptomatic knee joints. Results were compared with those obtained by means of static three-dimensional (3D) MR imaging. Twenty-seven of the 28 anterior cruciate ligament (ACL) tears and 22 of 24 normal ligaments were correctly identified at cine MR imaging for a sensitivity of 96% and a specificity of 92%. Static 3D MR imaging yielded a sensitivity of 71% and a specificity of 88%. All four posterior cruciate ligament tears were identified at cine and 3D MR imaging. For meniscal tears, cine MR imaging yielded a sensitivity of 48% and a specificity of 96%; the sensitivity and specificity for 3D MR imaging were 71% and 96%, respectively. Cine MR imaging proved to be more useful than static MR imaging in assessing the tightness of cruciate ligaments, especially of those that were partially torn, and in assessing the movement of meniscal-free fragments. The increased information obtained with cine MR imaging may warrant continued investigation and clinical application.
一种电影磁共振（MR）成像技术，包括在膝关节运动期间采集矢状面动态图像，用于评估52个有症状的膝关节。将结果与通过静态三维（3D）MR成像获得的结果进行比较。在电影MR成像中，28例前交叉韧带（ACL）撕裂中有27例、24条正常韧带中有22条被正确识别，灵敏度为96%，特异性为92%。静态3D MR成像的灵敏度为71%，特异性为88%。所有4例后交叉韧带撕裂在电影和3D MR成像中均被识别。对于半月板撕裂，电影MR成像的灵敏度为48%，特异性为96%；3D MR成像的灵敏度和特异性分别为71%和96%。在评估交叉韧带的紧张度，尤其是部分撕裂的交叉韧带的紧张度以及评估半月板游离碎片的运动方面，电影MR成像被证明比静态MR成像更有用。电影MR成像获得的更多信息可能值得继续研究和临床应用。
