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首页> 外文期刊>International journal of clinical rheumatology. >Doppler ultrasonography for assessing rheumatoid arthritis
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Doppler ultrasonography for assessing rheumatoid arthritis

机译：多普勒超声检查评估类风湿关节炎

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摘要

Doppler ultrasound is able to visualize blood flow by the change in frequency (Doppler shift) of sound waves that are reflected by moving blood cells inside the vessels (Doppler effect). Since hyperemia caused by vasodilation and angiogenesis can be the earliest detectable pathologic changes in the beginning of synovitis, Doppler ultrasonography can be used to assess inflammatory activity. In addition, several studies demonstrate a strong correlation between MRI as well as histological findings (blood vessel density) and Doppler sonographic visualization of synovial perf usion. To achieve this goal, equipment settings must be adapted to slow blood flow in very small blood vessels to reach an appropriate imaging quality. Color and power Doppler ultrasound depict different grades of intra-articular and peritendineous blood flow, which allows an estimation of inflammatory activity and is a helpful tool for the monitoring of rheumatic diseases during follow-up.
机译：多普勒超声能够通过声波的频率变化（多普勒频移）可视化血流，声波的频率由血管内移动的血细胞反射（多普勒效应）。由于血管舒张和血管生成引起的充血可能是滑膜炎开始时最早可检测到的病理变化，因此多普勒超声可用于评估炎症活动。另外，一些研究表明，MRI，组织学发现（血管密度）和滑膜病变的多普勒超声显像之间有很强的相关性。为了实现此目标，必须调整设备设置以减慢非常小的血管中的血流，以达到适当的成像质量。彩色和功率多普勒超声描绘了不同级别的关节内和周血流，这可以估计炎症活动，并且是在随访期间监测风湿性疾病的有用工具。

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