强直性脊柱炎骶髂关节病变CT与MRI诊断比较

目的：探讨强直性脊柱炎骶髂关节病变的影像学特征,并比较CT和MRI检查在诊断骶髂关节病变方面的作用。方法：回顾性分析51例经临床证实的AS患者骶髂关节CT及MRI表现特点,根据CT及MRI征象进行分级,对其分级结果进行统计学分析。结果：病变主要累及髂骨侧,对于I级病变,MRI较CT发现更多病灶,两者检出率差别有统计学意...

Abnormalities of Sacroiliac Joints in Ankylosing Spondylitis: Graded Comparison of CT and MRI

Objective： To study the imaging features for the sacroiliac pathological changes in ankylosing spondylitis and compare the role of CT and MR1 in diagnosing of the disease. Methods： A retrospective analysis was made on the manifestations of CT and MRI of the sacroiliac joints in 51 cases of clinically-proved AS. The cases were graded according to CT and MRI and statistically analyzed. Results： The lesions involve lilac-side of the sacroiliac joints mainly. For lesions of grade I, MRI is more sensitive than CT （P〈 0.05）, but MRI was equal to CT for detecting the lesions 〉_ grade II （P〉 0.05）. For cortical erosion and sclerosis, CT is more sensitive than MRI （P〈 0.05）. Conclusion： For the sacroiliac pathological changes in ankylosing spondylitis, CT in grading lesions is accurate, while early diagnosis can be made in MRI.