Validation of volume flow measurements with cine phase-contrast MR imaging for peripheral arterial waveforms
Validation of volume flow measurements with cine phase-contrast MR imaging for peripheral arterial waveforms
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DOI：
10.1002/jmri.1880050608
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发表时间：
1995-11-01
期刊：
影响因子：
--
通讯作者：
Gore, JC
中科院分区：
文献类型：
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作者：
McCauley, TR;Pena, CS;Gore, JC
使用模型来研究静息和运动时外周动脉预期范围内单相和三相波形的 MR 体积测量（2-24 mL/秒，n = 50）。通过相位校正图像处理消除涡流引起的误差，测量了准确性的提高，还测量了多普勒超声检查的体积现在估计，MR 体积现在测量与体积收集相关，r = .996，平均误差 = 4.6%，相位校正处理将平均误差从 12.6% 降低到 4.6%（P < .001，配对 t 检验），多普勒超声检查的平均误差更高10.3%（P < .001，未配对 t 检验）。电影相位对比 MR 成像现在可以准确估计波形的血量以及外周动脉中预期的范围。
A now phantom was used to study MR volume now measurements for monophasic and triphasic waveforms over the now range expected in peripheral arteries at rest and with exercise (2-24 mL/sec, n = 50). The improvement in accuracy with phase-correction image processing to eliminate errors caused by eddy currents was measured, Volume now estimates with Doppler sonography were also measured, MR volume now measurements correlated with volume collection with r = .996 and mean error = 4.6%, Phase-correction processing decreased mean error from 12.6% to 4.6% (P < .001, paired t-test), Doppler sonography had a higher mean error of 10.3% (P < .001, unpaired t-test). Cine phase-contrast MR imaging provides accurate estimates of volume blood now for waveforms and now ranges expected in peripheral arteries.