Fam A G, Rubenstein J D, Chin-Sang H, Leung F Y
Arthritis Rheum. 1985 Aug;28(8):930-7. doi: 10.1002/art.1780280813.
Computed tomography (CT) was compared with plain radiography and quantitative sacroiliac (SI) scintigraphy in 28 patients with early ankylosing spondylitis (AS) of less than or equal to 10 years duration. Compared with conventional radiography, CT improved delineation of the SI joints and revealed more abnormalities and higher grades of sacroiliitis; this was significant in patients with early AS of less than or equal to 3 years duration. Quantitative sacroiliac scintigraphy showed higher SI joint: sacrum ratios of radioisotope uptake in patients with AS compared with controls. However, its diagnostic usefulness was limited by the frequency of inconsistent results and the lack of specificity. CT examination of the SI joints may be a useful adjunct in the diagnosis of early AS.
对28例病程小于或等于10年的早期强直性脊柱炎（AS）患者的计算机断层扫描（CT）与普通X线摄影及定量骶髂关节（SI）闪烁扫描进行了比较。与传统X线摄影相比，CT改善了骶髂关节的显示，发现了更多异常和更高等级的骶髂关节炎；这在病程小于或等于3年的早期AS患者中具有显著意义。定量骶髂关节闪烁扫描显示，与对照组相比，AS患者骶髂关节与骶骨的放射性同位素摄取比值更高。然而，其诊断价值因结果不一致的频率和缺乏特异性而受到限制。骶髂关节的CT检查可能是早期AS诊断的有用辅助手段。
