使用植入钽标记物计算左心室容积：一种即使心脏旋转仍可重复的方法。

Calculation of left ventricular volume using implanted tantalum markers: a method reproducible despite rotation of the heart.

作者信息

Davis P L, Raff G L, Lipton M J, Ringertz H G

出版信息

Acta Radiol Diagn (Stockh). 1982;23(1):7-13. doi: 10.1177/028418518202300102.

DOI:10.1177/028418518202300102

Abstract

Endocardial markers implanted by catheter have been used to estimate the left ventricular volume by outlining the ventricle in orthogonal planes. However, if the position of the ventricle with respect to the biplane radiographic system changes, the projected outlines formed by the markers will narrow and the calculated volume will decrease. Therefore, a mathematical technique to correct this error was developed. It was tested by extensively rotating silicone casts of the left ventricle to which markers were glued. Except for one position at which the volume deviated by 4.5 ml, all the calculated volumes of the casts were reproducible to within 2 ml.

摘要

通过导管植入的心内膜标记物已被用于通过在正交平面上勾勒心室轮廓来估计左心室容积。然而，如果心室相对于双平面放射成像系统的位置发生变化，标记物形成的投影轮廓将会变窄，计算出的容积也会减小。因此，开发了一种数学技术来校正这一误差。通过对粘贴有标记物的左心室硅胶模型进行广泛旋转来对其进行测试。除了一个位置的容积偏差为4.5毫升外，模型的所有计算容积的重现性在2毫升以内。