Moriuchi M, Tobis J M, Mahon D, Gessert J, Griffith J, McRae M, Moussabeck O, Henry W L
Division of Cardiology, University of California, Irvine.
J Am Soc Echocardiogr. 1990 Nov-Dec;3(6):444-50. doi: 10.1016/s0894-7317(14)80360-x.
To determine which factors may affect the image quality when an intravascular ultrasound catheter is used in vivo, the influence of blood, temperature change, and contrast media were evaluated. In addition, to confirm the reproducibility of intravascular ultrasound imaging to measure cross-sectional lumen area, intraobserver and interobserver variability were determined. The findings indicated that ultrasound images in blood are mildly attenuated, that changes from room temperature to body temperature do not have a significant impact on the image quality, that contrast media attenuates the image intensity in a dose-dependent manner, and that the intravascular ultrasound imaging catheter provides a reproducible method for measuring arterial lumen area with excellent intraobserver and interobserver correlation.
为了确定在体内使用血管内超声导管时哪些因素可能影响图像质量，评估了血液、温度变化和造影剂的影响。此外，为了确认血管内超声成像测量横截面管腔面积的可重复性，确定了观察者内和观察者间的变异性。研究结果表明，血液中的超声图像轻度衰减，从室温到体温的变化对图像质量没有显著影响，造影剂以剂量依赖的方式衰减图像强度，并且血管内超声成像导管为测量动脉管腔面积提供了一种可重复的方法，观察者内和观察者间具有良好的相关性。
