基于电阻抗断层成像（EIT）图像得出的新生儿与成人肺阻抗的比较。

A comparison of neonatal and adult lung impedances derived from EIT images.

作者信息

Smallwood R H, Hampshire A R, Brown B H, Primhak R A, Marven S, Nopp P

机构信息

Department of Medical Physics and Clinical Engineering, University of Sheffield, Royal Hallamshire Hospital, UK.

出版信息

Physiol Meas. 1999 Nov;20(4):401-13. doi: 10.1088/0967-3334/20/4/307.

DOI:10.1088/0967-3334/20/4/307

PMID:10593233

Abstract

An objective method of extracting respiratory data from lung images is presented, together with a technique for automatically generating regions of interest delineating the anterior and posterior regions of the lungs. The method is used to extract data on the change in lung impedance with frequency, and on calculated Cole parameters, from 19 normal neonates (gestational age 32 to 42 weeks) and 8 normal adults (age 21 to 82 years). A comparison of the impedance properties of neonatal and adult lungs was made. The variation of lung impedance with frequency in neonates, as derived from EIT images, is significantly different from that found for adults. The implications for a model of the electrical impedance of lung tissue are discussed.

摘要

本文提出了一种从肺部图像中提取呼吸数据的客观方法，以及一种自动生成感兴趣区域以勾勒肺部前后区域的技术。该方法用于从19名正常新生儿（胎龄32至42周）和8名正常成年人（年龄21至82岁）中提取关于肺阻抗随频率变化的数据以及计算得到的科尔参数。对新生儿和成人肺部的阻抗特性进行了比较。从电阻抗断层成像（EIT）图像得出的新生儿肺阻抗随频率的变化与成年人的显著不同。文中讨论了其对肺组织电阻抗模型的影响。