Ho P S, Yu S W, Sether L A, Wagner M, Ho K C, Haughton V M
Department of Radiology, Medical College of Wisconsin, Milwaukee.
Radiology. 1988 Aug;168(2):469-72. doi: 10.1148/radiology.168.2.3393666.
The appearance of the ligamentum flavum on sagittal and coronal magnetic resonance (MR) images has not been described in detail in the radiologic literature. The authors reviewed correlative MR images and anatomic sections obtained with a cryomicrotome in 20 cadavers in order to analyze anatomic relationships, variations, and progressive degenerative changes of the ligamentum flavum in the lumbar region. MR imaging showed the ligamentum flavum as an intermediate-signal-intensity structure on images obtained with short and long repetition times (TRs). Sagittal short TR images were effective for evaluating relationships between the ligamentum flavum, spinal canal, and nerve roots. Degenerative changes in the ligamentum flavum appeared as changes in shape or thickness of the ligaments on MR images. Calcification and fat infiltration, which were well depicted on anatomic sections, were not visualized on MR images.
黄韧带在矢状面和冠状面磁共振（MR）图像上的表现，在放射学文献中尚未得到详细描述。作者回顾了20具尸体的相关MR图像和用冷冻切片机获得的解剖切片，以分析腰椎区域黄韧带的解剖关系、变异及进行性退变变化。MR成像显示，在采用短和长重复时间（TR）获得的图像上，黄韧带为中等信号强度结构。矢状面短TR图像对于评估黄韧带、椎管和神经根之间的关系很有效。黄韧带的退变变化在MR图像上表现为韧带形状或厚度的改变。解剖切片上清晰显示的钙化和脂肪浸润，在MR图像上未显示。
