多裂隙法测量血管的三维形变

MULTI -SLIT METHOD FOR 3-DMEASUREMENT OF BLOOD VESSELS

血管受力状态下三维形变的测量是全面准确地研究血管力学性质必需的技术，目前国内外关于此方面的文献甚少。本文基于裂隙投影测量原理，提出了一种非接触的光学测量技术来测量离体或在体血管的三维形变，并给出了相应的数据处理方法以修正由于光程差和光学结构所导致的误差。在文章中，我们用一半径已知的细圆柱棒测定此技术的测量误差在±１０ｍ以内；同时我们还将之应用于离体兔胸主动脉力学性质研究中并得到了较好的实验结果。

This paper presents a non-contact, optical technique for measuringthree-dimensional deformation of blood vessels in vitro or in vivo, alo-ng with the corresponding data-processing procedure to correct theexperiment error. A pre-test shows that the measuring error of thistechnique is within±0.01mm.The application of this technique in stud-ies on properties of the rabbit aorta is demonstrated, and the resultshows that this new technique is valuable in studies on blood vesselmechanics.