Cunningham L N, Labrie C, Soeldner J S, Gleason R E, Doll H G
Med Instrum. 1983 May-Jun;17(3):237-40.
The reliability and reproducibility of peripheral blood flow data obtained by a noninvasive electromagnetic flowmeter were tested using seven male and three female volunteers aged 15-46 years. Each subject was studied under multiple testing conditions in which time, subject's metabolic state, and electrode placement were varied. Each condition was repeated within 1 to 8 weeks to obtain test-retest data. Intraclass reliability coefficients of 0.864-0.998 were obtained on all pulsatile components both within a given measurement sessions and from one day to the next. The size and shape of the waveforms obtained from the data did not significantly differ from one another, thus indicating excellent reproducibility. No significant differences were found between data obtained from the right leg and that obtained from the left. The noninvasive electromagnetic flowmeter was found capable of providing reliable and reproducible data. For data analysis, the second of two consecutive curves seems to be the best choice for clinical assessment.
使用7名年龄在15至46岁之间的男性志愿者和3名女性志愿者，对通过无创电磁流量计获得的外周血流数据的可靠性和可重复性进行了测试。在多种测试条件下对每位受试者进行研究，其中时间、受试者的代谢状态和电极放置均有所变化。每种条件在1至8周内重复进行以获得重测数据。在给定测量时段内以及从一天到下一天，所有搏动成分的组内可靠性系数为0.864 - 0.998。从数据中获得的波形的大小和形状彼此之间没有显著差异，因此表明具有出色的可重复性。从右腿获得的数据与从左腿获得的数据之间未发现显著差异。发现无创电磁流量计能够提供可靠且可重复的数据。对于数据分析，连续两条曲线中的第二条似乎是临床评估的最佳选择。
