从磁共振图像中测定三维躯干、心脏和电极几何形状

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1988-11-01 DOI:10.1109/IEMBS.1988.94436

P. Ershler, R. Lux, L. Green, G. Caputo, D. Parker

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引用次数: 6

摘要

ECG(心电图)反解需要精确测定三维躯干、心脏和电极几何形状。磁共振成像(MRI)为获取这些信息提供了一种非侵入性的方法。受试者首先使用195通道数据记录系统进行体表电位映射。由于成像系统强磁场的限制，需要用非金属充油的幻体电极代替金属记录电极。这些在MRI图像中很容易被描绘出来。每隔10毫米对受试者进行MRI横切面成像。表示结果图像的数字数据被传输到Macintosh II计算机以定义表面边界。这是一种获取心电反解几何数据的实用技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Determination of three-dimensional torso, heart and electrode geometries from magnetic resonance images

ECG (electrocardiogram) inverse solutions require accurate determination of three-dimensional torso, heart, and electrode geometries. Magnetic resonance imaging (MRI) provides a noninvasive method for obtaining this information. Subjects initially undergo body surface potential mapping using a 195-channel data recording system. Limitations imposed by the intense magnetic field of the imaging system require that the metallic recording electrodes be replaced with nonmetallic oil-filled phantom electrodes. These are easily delineated in the MRI images. Transverse MRI sections of the subject are imaged at 10-mm intervals. Digital data representing the resulting images are transferred to a Macintosh II computer for definition of surface boundaries. This is a practical technique for obtaining geometrical data for ECG inverse solutions.<>

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Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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