ABNORMALITIES OF ARTICULAR-CARTILAGE IN THE KNEE - ANALYSIS OF AVAILABLE MR TECHNIQUES
ABNORMALITIES OF ARTICULAR-CARTILAGE IN THE KNEE - ANALYSIS OF AVAILABLE MR TECHNIQUES
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DOI：
10.1148/radiology.187.2.8475293
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发表时间：
1993-05-01
期刊：
影响因子：
19.7
通讯作者：
RESNICK, D
中科院分区：
文献类型：
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作者：
RECHT, MP;KRAMER, J;RESNICK, D
为了改善磁共振成像对软骨异常的检测，通过对5个尸体膝关节标本的研究，优化了脂肪抑制的三维梯度回忆采集稳态（GRASS）和破坏GRASS（SPGR）序列。然后将该优化序列的结果与三种自旋回波（T1加权、质子密度加权和T2加权）和两种三维梯度回波序列（GRASS和非脂肪抑制SPGR）的结果进行比较，以评估10例尸体膝关节髌股间室的自然发生的异常。优化的脂肪抑制SPGR序列的结果明显优于其他5种序列的结果（P <0.02），敏感性为96%，特异性为95%，准确性为95%。此外，正常软骨始终表现为具有脂肪抑制SPGR序列的三层结构，这一特征似乎有助于识别软骨病变。
In an attempt to improve the detection of chondral abnormalities with magnetic resonance imaging, a fat-suppressed three-dimensional gradient-recalled acquisition in the steady state (GRASS) and spoiled GRASS (SPGR) sequence was optimized by study of five cadaveric knee specimens. Results with this optimized sequence then were compared with results with three spin-echo (T1-, proton-density-, and T2-weighted) and two three-dimensional gradient-recalled echo sequences (GRASS and non-fat-suppressed SPGR) in the assessment of naturally occurring abnormalities of the patellofemoral compartment in 10 cadaveric knees. Results with the optimized fat-suppressed SPGR sequence were significantly better (P < .02) than results with the other five sequences and had a sensitivity of 96%, a specificity of 95%, and an accuracy of 95%. In addition, normal cartilage consistently appeared as a trilaminar structure with the fat-suppressed SPGR sequence, a feature that appeared to help in identification of chondral lesions.