MRI对颈椎病的诊断价值

Diagnosis of mixed cervical spondylois with MRI

96例混合型颈椎病的MRI主要表现为椎间盘髓核失水、变性、椎间隙变窄，椎间盘膨出、突出和脱出，椎体后缘骨赘形成、黄韧带肥厚内招、椎管狭窄；脊髓受压移位、变形，脊髓水肿、变性、软化和囊肿形成，其横截面积缩小；椎间孔处颈神经根周围脂肪高信号减少或消失。不用对比剂的推动脉MR显影（MRA）可立即显示颈部双侧推动脉粗细、迂曲、受阻及动态状况。其中32例以脊髓型为主老同时作脊髓造影和CTM检查，并经手术证实。脊髓造影、CTM、MRI与手术所见符合率分别为60％、85％、96％。作者认为，MRI诊断颈椎病简捷准确，定位精确度高，可优化缩短诊疗全过程。

Magnetic resonance imaging was performed on 96 patients with mixed cervical spondylosis.Spine echo sequences and cervical surface coils were used in all patients. The main pathologic changes of MRI were as follows:narrowed intervertebral space, intervertebral disc degeneration or herniation,overgrown posterior vertebral osteophytes ,and hypertrophic and folded ligamen-tum flavum. All of these compressed and displaced the spinal cord and cervical nerve foots. A thin and atrophied cord was frequently found. Vertebral MR angiography showed that the diameter of the vertebral artery got thiner and the course of the vertebral artery became curved. It is concluded that MRI is the best means, so far, for acuurately evaluating mixed cervical spondylosis and consequently pathologic changes in the spinal cord, vertebral artery and cervical nerve roots.