Kowalski H M, Cohen W A, Cooper P, Wisoff J H
AJR Am J Roentgenol. 1987 Sep;149(3):595-600. doi: 10.2214/ajr.149.3.595.
CT was used to examine six patients with clinically evident atlantoaxial rotary fixation, two patients with torticollis, and six normal subjects who had turned their heads to the side as far as voluntarily possible. The CT appearances of the atlantoaxial complex were identical in all three groups. To differentiate these groups, we propose a functional scan through C1-C2 in which patients are scanned initially as they present, with their heads fixed in lateral rotation. Subsequent scans are obtained with their heads turned to the maximum contralateral rotation. CT scans in patients with atlantoaxial rotary fixation demonstrate no motion at C1-C2 during this maneuver, while those in patients with transient torticollis show a reduction or reversal of the rotation of C1 on C2.
对6例临床诊断为寰枢椎旋转固定的患者、2例斜颈患者以及6名能自主将头尽可能转向一侧的正常受试者进行了CT检查。三组中寰枢椎复合体的CT表现均相同。为区分这些组别，我们建议通过C1 - C2进行功能扫描，即首先在患者头部固定于侧方旋转位时对其进行扫描，然后在其头部转向对侧最大旋转位时再次扫描。寰枢椎旋转固定患者在此操作过程中C1 - C2无活动，而短暂性斜颈患者的扫描结果显示C1相对于C2的旋转减少或反向。
