用于电阻抗断层成像的并行数据采集系统中误差的分析与评估。

Analysis and assessment of errors in a parallel data acquisition system for electrical impedance tomography.

作者信息

Rosell J, Murphy D, Pallas R, Rolfe P

机构信息

Division de Instrumentacion y Bioingerieria ETSI Telecomunicacion, Barcelona, Spain.

出版信息

Clin Phys Physiol Meas. 1988;9 Suppl A:93-9. doi: 10.1088/0143-0815/9/4a/016.

DOI:10.1088/0143-0815/9/4a/016

PMID:3240657

Abstract

Three possible data collection configurations for electrical impedance tomography are considered. These are serial current but parallel voltage measurement or full parallel operations. Measurement errors due to stray capacitances, common mode signals and contact impedance are considered. It is concluded that a parallel system offers advantages in terms of either speed or signal to noise ratio by may give larger common mode errors.

摘要

考虑了电阻抗断层成像的三种可能的数据采集配置。这些是串行电流但并行电压测量或全并行操作。考虑了由于杂散电容、共模信号和接触阻抗引起的测量误差。得出的结论是，并行系统在速度或信噪比方面具有优势，但可能会产生更大的共模误差。