ACT3 - A HIGH-SPEED, HIGH-PRECISION ELECTRICAL-IMPEDANCE TOMOGRAPH

被引：140

作者：

COOK, RD

SAULNIER, GJ

GISSER, DG

GOBLE, JC

NEWELL, JC

ISAACSON, D

机构：

[1] RENSSELAER POLYTECH INST,DEPT ELECT COMP & SYST ENGN,TROY,NY 12180

[2] UNIV VIRGINIA,DEPT NEUROSURG,CHARLOTTESVILLE,VA 22903

[3] RENSSELAER POLYTECH INST,DEPT MATH,TROY,NY 12180

[4] RENSSELAER POLYTECH INST,DEPT COMP SCI,TROY,NY 12180

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1994年 / 41卷 / 08期

关键词：

14;

D O I：

10.1109/10.310086

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This paper presents the design, implementation, and performance of Rensselaer's third-generation Adaptive Current Tomograph, ACT3. This system uses 32 current sources and 32 phase-sensitive voltmeters to make a 32-electrode system that is capable of applying arbitrary spatial patterns of current. The instrumentation provides 16 b precision on both the current values and the real and reactive voltage readings and can collect the data for a single image in 133 ms. Additionally, the instrument is able to automatically calibrate its voltmeters and current sources and adjust the current source output impedance under computer control. The major system components are discussed in detail and performance results are given. Images obtained using stationary agar targets and a moving pendulum in a phantom as well as in vivo resistivity profiles showing human respiration are shown.

引用

页码：713 / 722

页数：10

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