Kimme-Smith C, Hussain R, Duerinckx A, Tessler F, Grant E
Department of Radiological Sciences, UCLA School of Medicine 90024.
Radiology. 1990 Oct;177(1):265-72. doi: 10.1148/radiology.177.1.2204967.
To assess the need for quality control when measuring peak velocities with Doppler ultrasonography, 17 duplex Doppler instruments from six manufacturers were compared by using a flow phantom that had been calibrated for peak velocities ranging from 23 to 75 cm/sec. Variations in peak-velocity measurements among machines averaged 23% when tested at the same flow rate with a Doppler flow phantom, indicating that scientific articles that document peak velocities for various disease processes should be accompanied by equipment calibration data. Doppler string and flow phantoms were compared, and each was found to have deficiencies. Techniques for quality assurance procedures for Doppler measurements are given that should achieve consistent peak-velocity measurements on serial scans of patients undergoing treatment for vascular conditions.
为评估使用多普勒超声测量峰值流速时进行质量控制的必要性，通过使用已针对23至75厘米/秒的峰值流速进行校准的血流模拟装置，对来自六个制造商的17台双功多普勒仪器进行了比较。当使用多普勒血流模拟装置以相同流速进行测试时，各仪器之间峰值流速测量值的差异平均为23%，这表明记录各种疾病过程峰值流速的科学文章应附带设备校准数据。对多普勒导丝和血流模拟装置进行了比较，发现两者均存在不足。文中给出了多普勒测量质量保证程序的技术，这些技术应能在对血管疾病患者进行治疗的连续扫描中实现一致的峰值流速测量。
