一款用于81mKr肺通气门控的交互式软件。

An interactive software for 81mKr pulmonary ventilation gating.

作者信息

Cinotti L, Bazin J P, Meignan M, Di Paola R

出版信息

Comput Biomed Res. 1985 Oct;18(5):397-407. doi: 10.1016/0010-4809(85)90018-7.

Abstract

An interactive software to gate scintigraphic list-mode data collected from ventilation studies using a radioisotope of an inert gas (81mKr) has been developed. It allows the detection of end expiration and end inspiration phases in a time activity curve. It involves six phases: filtering of the curve; preselection of local extrema; validation of the preselection; choice of the parameters for the reconstruction; control of the selected cycles and display of parameters such as frequency, expiration time, breath amplitude; reconstruction of images representing the distribution of ventilation during a mean respiratory cycle. This software was tested on 116 data sets without a failure. The interactive definition and control of the selected times made the algorithm useful regardless of the count rate and the frequency. It could be adapted to gate other periodic or semiperiodic physiological phenomena.

摘要

已开发出一种交互式软件，用于对使用惰性气体（81mKr）放射性同位素从通气研究中收集的闪烁照相列表模式数据进行门控。它可以在时间-活度曲线中检测呼气末和吸气末阶段。该软件涉及六个阶段：曲线滤波；局部极值的预选；预选验证；重建参数选择；所选周期的控制以及诸如频率、呼气时间、呼吸幅度等参数的显示；代表平均呼吸周期通气分布的图像重建。该软件在116个数据集上进行了测试，无一失败。所选时间的交互式定义和控制使该算法无论计数率和频率如何都很有用。它可以适用于对其他周期性或半周期性生理现象进行门控。