高分辨CT对强直性脊柱炎骶髂关节病变的诊断价值

目的评估高分辨CT对强直性脊柱炎（AS）骶髂关节改变的诊断价值。方法对86例成人AS患者的骶髂关节行高分辨CT扫描，分析其征象，用秩和检验法对不同病程组及同一病程组不同性别患者骶髂关节CT改变分级进行统计学处理。结果骶髂关节病变的基本征象是关节糜烂、增生硬化、关节间隙改变、关节强直、关节腔内气体影及软组织影。随病程延长病变加重（Ρ＜0．01），同病程组病人女性病变重于男性（Ρ＜0．01）。结论高分辨CT能清晰显示骶髂关节的细微结构，有利于认清征象，做出正确诊断。

Diagnostic Value of HRCT With Ankylosing Spondylitis in Sacroiliac Joint

Objective:To evaluate the effect of HRCT in diagnosis of the sacroiliac joint of ankylosing spondylitis(AS).Methods:HRCT scanning of sacroiliac joints were performed in 86 adult patients with AS.CT findings were reviewed.Rank test was used for statistical analysis of the grade of sacroiliac joint changes in two groups based on course of disease and the sex of patients.Results:The CT findings of the sacroiliac joint changes in AS included erosion,arthrosclerosis,change of joint space,arthrokleisis,gas and soft tissue in articular cavity.Pathologic changes were more obvious with the course of disease prolonged (P0.01).In the group during the same course,pathologic changes were more marked in female patients than those in male ones(P0.01).Conclusion:HRCT can show tiny structures of sacroitiac joint clearly.This is beneficial to recognize different patologic changes and make correct diagnosis.