用于急性中风成像的紧凑型多频电阻抗断层成像（EIT）系统的设计与校准
Design and calibration of a compact multi-frequency EIT system for acute stroke imaging.
作者信息
McEwan A, Romsauerova A, Yerworth R, Horesh L, Bayford R, Holder D
机构信息
Department of Medical Physics and Bioengineering, UCL, London WC1E 6BT, UK.
出版信息
Physiol Meas. 2006 May;27(5):S199-210. doi: 10.1088/0967-3334/27/5/S17. Epub 2006 Apr 24.
A new, compact UCLH Mk 2.5 EIT system has been developed and calibrated for EIT imaging of the head. Improvements include increased input and output impedances, increased bandwidth and improved CMRR (80 dB) and linearity over frequencies and load (0.2% on a single channel, +/-0.7% on a saline tank over 20 Hz-256 kHz and 10-65 Omega). The accuracy of the system is sufficient to image severe acute stroke according to the specification from recent detailed anatomical modelling (Horesh et al 2005 3rd European Medical and Biological Engineering Conference EMBEC'05). A preliminary human study has validated the main specifications of the modelling, the range of trans-impedance from the head (8-70 Omega) using a 32 electrode, 258 combination protocol and contact impedances of 300 Omega to 2.7 kOmega over 20 Hz to 256 kHz.
一种新型紧凑型伦敦大学学院医院（UCLH）Mk 2.5电阻抗断层成像（EIT）系统已被开发出来并针对头部的EIT成像进行了校准。改进之处包括输入和输出阻抗增加、带宽增加以及共模抑制比（CMRR）提高（80分贝），并且在频率和负载范围内线性度得到改善（单通道上为0.2%，在盐水箱中，20赫兹至256千赫兹及10至65欧姆负载范围内为±0.7%）。根据最近详细解剖模型的规范（霍雷什等人，2005年第三届欧洲医学与生物工程会议EMBEC'05），该系统的精度足以对严重急性中风进行成像。一项初步人体研究已经验证了模型的主要规范，即使用32电极、258种组合方案时头部的跨阻抗范围（8至70欧姆）以及在20赫兹至256千赫兹范围内300欧姆至2.7千欧姆的接触阻抗。
Zotero 插件