Meine M, Machraoui A, Dasbach G, Müller K M, Grewe P, Barmeyer J
Abteilung für Kardiologie und Angiologie, Berufsgenossenschaftlichen Kliniken Bergmannsheil, Universitätsklinik der Ruhr-Universität Bochum.
Ultraschall Med. 1996 Apr;17(2):72-8. doi: 10.1055/s-2007-1003150.
Intravascular ultrasound investigations are new tomographic imaging methods for evaluation of artery dimensions and wall morphology. The present study was performed to test accuracy and observer variability.
3 plastic phantoms and 1 iliacan artery were assessed. The quantitative measurements were made by computerised 3D reconstruction.
The plastic phantoms showed ultrasonically three layers of echogenic structures. An intimal fibrous thickening was seen in the iliac artery. The cross sectional diameters were ultrasonically overestimated by 12.6 +/- 5.6%. Due to the lower velocity of sound in water than in blood there were no significant differences to the true diameters. The intra- and interobserved variabilities were determined to 1.4 +/- 0.8% and 2.6 +/- 1.2%.
Intravascular ultrasound provides a reproducible method for measuring vessel lumen diameters with excellent intraobserver and interobserver variabilities. For in vitro examinations the different velocities of sound in different media have to be taken into account.
血管内超声检查是用于评估动脉尺寸和管壁形态的新型断层成像方法。本研究旨在测试其准确性和观察者变异性。
对3个塑料模型和1条髂动脉进行评估。通过计算机三维重建进行定量测量。
塑料模型在超声下显示出三层回声结构。在髂动脉中可见内膜纤维增厚。超声测量的横截面直径被高估了12.6±5.6%。由于水中声速低于血液中的声速，与真实直径无显著差异。观察者内和观察者间的变异性分别确定为1.4±0.8%和2.6±1.2%。
血管内超声为测量血管腔直径提供了一种可重复的方法，具有出色的观察者内和观察者间变异性。对于体外检查，必须考虑不同介质中不同的声速。
