Grogan J P, Hemminghytt S, Williams A L, Carrera G F, Haughton V M
Radiology. 1982 Dec;145(3):737-42. doi: 10.1148/radiology.145.3.7146406.
Spinal CT scans, plain radiographs, and medical records of 81 patients with an abnormal pars interarticularis were reviewed to define the CT criteria for spondylolysis. In many cases, it was difficult to detect because it simulated the adjacent facet joints; however, it could be differentiated by careful analysis of the section level and the contiguous facet joints, which usually had regular cortical surfaces (in contrast to the pars defects). Spondylolysis was evident on the lateral localizer image in most cases. In some patients the pars appeared abnormally narrow and elongated or sclerotic as well as interrupted. In a few cases, CT demonstrated a pars defect which was not effectively shown by the plain radiographs. In one patient, a herniated disk was also seen.
回顾了81例关节突间部异常患者的脊柱CT扫描、X线平片和病历，以确定椎弓根峡部裂的CT标准。在许多情况下，由于其与相邻关节突关节相似，很难检测到；然而，通过仔细分析断面水平和相邻关节突关节（其皮质表面通常规则，与椎弓根峡部裂缺损不同），可以进行鉴别。在大多数情况下，椎弓根峡部裂在侧位定位像上很明显。在一些患者中，椎弓根看起来异常狭窄、拉长或硬化，并且有中断。在少数情况下，CT显示了X线平片未能有效显示的椎弓根峡部裂缺损。在一名患者中，还发现了椎间盘突出。
