Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan.
Jpn J Radiol. 2012 Nov;30(9):713-20. doi: 10.1007/s11604-012-0108-1. Epub 2012 Jul 19.
We compared intermediate-weighted fast spin-echo (IW-FSE) images with intermediate-weighted fast-recovery FSE (IW-FRFSE) images in the diagnosis of meniscal tears.
First, 64 patients were recruited, and the arthroscopic findings (n = 40) and image analysis (n = 19) identified 59 torn menisci with 36 patients. Both the diagnostic performance and image quality in assessing meniscal tears was evaluated for IW-FSE and IW-FRFSE images using a four-point scale. Signal-to-noise ratio (SNR) calculation was performed for both sets of images.
IW-FRFSE image specificity (100 %) for diagnosing the posterior horn of the medial meniscus (MM) tear with reader 1 was significantly higher than that of IW-FSE images (90 %). Mean ratings of the contrast between the lesion and normal signal intensity within the meniscus were significantly higher for the IW-FRFSE image ratings than the IW-FSE images in most meniscal tears. Mean SNRs were significantly higher for IW-FSE images than for IW-FRFSE images (P < 0.05).
IW-FRFSE imaging can be used as an alternative to the IW-FSE imaging to evaluate meniscal tears.
我们比较了中间加权快速自旋回波（IW-FSE）图像与中间加权快速恢复 FSE（IW-FRFSE）图像在半月板撕裂诊断中的应用。
首先招募了 64 名患者，其中 36 名患者的关节镜检查结果（n=40）和图像分析（n=19）发现了 59 个撕裂的半月板。使用四点量表评估了 IW-FSE 和 IW-FRFSE 图像在评估半月板撕裂中的诊断性能和图像质量。对两组图像均进行了信噪比（SNR）计算。
IW-FRFSE 图像对内侧半月板（MM）后角撕裂的诊断特异性（100%）显著高于 IW-FSE 图像（90%），对于大多数半月板撕裂，IW-FRFSE 图像的病变与正常半月板信号强度之间对比度的平均评分显著高于 IW-FSE 图像。IW-FSE 图像的平均 SNR 显著高于 IW-FRFSE 图像（P<0.05）。
IW-FRFSE 成像可以作为 IW-FSE 成像的替代方法来评估半月板撕裂。
