An automated simultaneous transmural cardiac mapping system.
An automated simultaneous transmural cardiac mapping system.
复制标题
自动化同步透壁心脏测绘系统。
DOI：
10.1152/ajpheart.1984.247.4.h661
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Corr,PB
中科院分区：
文献类型：
--
作者：
Witkowski,FX;Corr,PB
原位心脏去极化的起源和传播顺序需要来自多个部位的准确的同时三维信息。同样，心律失常的潜在机制通常可以通过确定通过心脏的脉冲传播过程来阐明，特别是如果可以同时从多个部位获得信息，从而允许分析瞬时或快速发生的事件。获得如此详细的连续信息的最重要的问题是需要大量的数据存储以及快速分析的需要。在本系统中，通过立即将所有电描记图从模拟转换为数字以用于所有后续存储和处理来克服这些问题。双极电描记图信息是从240个心脏部位同时采集的，采样率为2 kHz，连续总数据存储时间长达60 min。通过计算机生成的交互式图形呈现多个深度的快速二维等时图（有效的三维信息）。系统设计允许轻松扩展到近2，000个同步站点。人体手术电生理术中研究在距离计算机设施2,000英尺的手术室进行，所有通信均通过光纤链路进行。该系统允许实验和临床心脏标测从多个网站从一个单一的心脏去极化，最小的冗余昂贵的硬件，并直接快速可视化的所有原始电描记图数据。
The origin and propagation sequence of cardiac depolarization in situ requires accurate simultaneous three-dimensional information from multiple sites. Likewise, the mechanism underlying an arrhythmia can often be elucidated by determining the course of impulse propagation through the heart, particularly if information can be obtained from multiple sites simultaneously, allowing analysis of transient or rapidly occurring events. The most significant problem with obtaining such detailed continuous information is the large amount of data storage required as well as the need for rapid analysis. In the present system these problems are overcome by immediate conversion of all electrograms from analog to digital for all subsequent storage and processing. The bipolar electrogram information is acquired from 240 cardiac sites simultaneously at a sampling rate of 2 kHz with continuous and total data storage of up to 60 min. Rapid two-dimensional isochronic maps at multiple depths (effective 3-dimensional information) are presented via computer-generated interactive graphics. System design permits easy expansion to almost 2,000 simultaneous sites. Surgical electrophysiological intraoperative studies in humans are performed at an operating room located 2,000 ft from the computer facility with all communications carried by a fiber-optic link. The system allows both experimental and clinical cardiac mapping from multiple sites from a single cardiac depolarization, minimal redundancy of costly hardware, and direct rapid visualization of all original electrogram data.