高频彩色多普勒超声在初诊类风湿关节炎患者膝关节滑膜病变中的应用价值

目的 应用高频彩色多普勒超声观察类风湿性关节炎(RA)患者膝关节滑膜及其血管增生性病变的情况,评价超声对RA膝关节病变的辅助诊断价值.方法 顺序纳入2009年10月至2010年10月在卫生部北京医院门诊就诊,符合中华医学会风湿病学分会RA诊治指南诊断标准[1]的患者41例(RA组),其中男11例,女30例.选择性别构成、年龄与RA组匹配的同期健康志愿者41名为对照组.采用高频彩色多普勒超声对RA组与对照组的膝关节髌上囊液体厚度、滑膜增生及血流情况,测定滑膜内动脉血流峰值流速(PSV)、舒张末期流速(EDV)、阻力指数(RI)和静脉血流速度.统计学方法采用组间t检验.结果 41例RA患者82个膝关节中,共有75个膝关节滑膜不同程度增厚(>2 mm),占91.46%,滑膜厚度为2.2～19.7(6.3±3.4) mm.其中0级血流占18.67%(14/75),1级血流占29.33%(22/75),2级血流占45.33%(34/75),3级血流占6.67%(5/75);动脉血流:PSV为(10.82±3.71) cm/s,EDV为(3.86±1.12) cm/s,RI为0.61±0.07;静脉平均血流速度:(2.72±1.02) cm/s.69个膝关节周围滑囊可见不同程度的积液,占84.15%,积液前后径2.4～16.1(6.9±3.2) mm.对照组未见滑囊积液及血流信号;无膝关节滑膜增厚,滑膜厚度为1.2～1.8(1.4±0.4) mm,与RA组比较,差异有统计学意义(P<0.05).结论 高频彩色多普勒超声能较为客观准确地检测RA患者膝关节增厚滑膜的形态结构、厚度、滑膜内部增生血管的血流和滑囊积液等病变情况,因此,可将其作为临床判断初诊RA患者膝关节滑膜病变程度和疗效观察的首选检查方法.

Abstract：

Objective To investigate the value of high frequency and color Doppler ultrasonography in detection of synovitis and the intra-articular vascularization in the knee joint of patients with newly-diagnosed rheumatoid arthritis (RA).Methods Forty-one patients (30 women, 11 men) with newly-diagnosed RA were recruited to a cross sectional study(RA group).Forty-one age and gender-matched healthy volunteers were used as control group.The thickness of hydatid fluid, synovium hyperplasia, color flow imaging, peak systolic velocity(PSV), end diastolic velocity(EDV), resistance index(RI), venous blood flow and intra-articular perfusion were evaluated by high frequency and color Doppler ultrasonography.Results Totally 91.46% knee joints with synovial hyperplasia(>2 mm) were found in 41 patients with RA(75/82 knee joints),and the thickness of the synovial membrane was 2.2-19.7 mm (average 6.3±3.4 mm). In aspect of blood flow,the percentage of 0 to 3 grade were 18.67%(14/75), 29.33%(22/75),45.33 %(34/75) and 6.67%(5/75), respectively;the results of arterial blood were indicated with PSV (10.82±3.71 cm/s),EDV(3.86±1.12 cm/s)and RI (0.61±0.07),while the average of venous blood velocity was 2.72±1.02 cm/s.Joint effusion was found in 69 joints (84.15%)with the anteroposterior diameter 2.4-16.1 mm( average 6.9±3.2 mm).The thickness of synovial membrane was 1.2-1.8 mm (average 1.4±0.4 mm) and no significant difference were observed in joint effusion, signal of blood flow and thickness of synovial membrane in the control group.Conclusions High frequency and power Doppler ultrasonography may be a valuable and optimal clinical tool to accurately and objectively detect synovial hyperplasia, vascular pannus formation and joint effusion in the knee joint of patients with RA

Asseement of synovitis in the knee of patients with newly-diagnosed heumatoid arthritis using high frequency and color Doppler ultrasonography

Objective To investigate the value of high frequency and color Doppler ultrasonography in detection of synovitis and the intra-articular vascularization in the knee joint of patients with newly-diagnosed rheumatoid arthritis (RA).Methods Forty-one patients (30 women, 11 men) with newly-diagnosed RA were recruited to a cross sectional study(RA group).Forty-one age and gender-matched healthy volunteers were used as control group.The thickness of hydatid fluid, synovium hyperplasia, color flow imaging, peak systolic velocity(PSV), end diastolic velocity(EDV), resistance index(RI), venous blood flow and intra-articular perfusion were evaluated by high frequency and color Doppler ultrasonography.Results Totally 91.46% knee joints with synovial hyperplasia(>2 mm) were found in 41 patients with RA(75/82 knee joints),and the thickness of the synovial membrane was 2.2-19.7 mm (average 6.3±3.4 mm). In aspect of blood flow,the percentage of 0 to 3 grade were 18.67%(14/75), 29.33%(22/75),45.33 %(34/75) and 6.67%(5/75), respectively;the results of arterial blood were indicated with PSV (10.82±3.71 cm/s),EDV(3.86±1.12 cm/s)and RI (0.61±0.07),while the average of venous blood velocity was 2.72±1.02 cm/s.Joint effusion was found in 69 joints (84.15%)with the anteroposterior diameter 2.4-16.1 mm( average 6.9±3.2 mm).The thickness of synovial membrane was 1.2-1.8 mm (average 1.4±0.4 mm) and no significant difference were observed in joint effusion, signal of blood flow and thickness of synovial membrane in the control group.Conclusions High frequency and power Doppler ultrasonography may be a valuable and optimal clinical tool to accurately and objectively detect synovial hyperplasia, vascular pannus formation and joint effusion in the knee joint of patients with RA