基于近红外光谱法脑血肿检测的最佳检测距离选择

发布时间：2018-02-11 10:50

本文关键词： 近红外光光源与检测器距离蒙特卡洛等效信噪比脑血肿检测　出处：《生物医学工程研究》2017年01期 　论文类型：期刊论文

【摘要】：为提高近红外光谱法脑血肿无创检测的精度,需准确选择最佳的光源-检测器(Source-Detector,SD)位置。本研究以脑血肿发生深度为感兴趣深度(deep of interest,DOI),根据来自于DOI的光子数量定义等效信噪比(equivalent signal to noise ratio,ESNR)参数。利用蒙特卡洛算法对双层脑部模型进行仿真,分别获得了0.1、0.15、0.2、0.25、0.3 cm头皮颅骨厚度下的光源-检测器与ESNR的对应关系,从而可以根据被测者的个体差异选择最佳的光源-检测器距离以获得脑血肿检测的准确结果。SD-ESNR表格的建立,为不同检测者脑血肿检测时提供了信噪比较高的光源-检测器位置。
[Abstract]:In order to improve the accuracy of noninvasive detection of intracerebral hematoma by near infrared spectroscopy, It is necessary to select the best position of light source detector Source-detector. In this study, based on the depth of occurrence of intracerebral hematoma, we define the equivalent signal to noise ESNR parameters according to the number of photons from DOI. The algorithm simulates the bilevel brain model. The relationship between the light source detector and ESNR at 0.15 ~ 0.25 ~ 0.25cm skull thickness was obtained respectively. The best distance between light source and detector could be selected according to the individual difference of the subjects to obtain the accurate result of brain hematoma detection. SD-ESNR table was established. The location of detector is provided with high SNR for different detection of cerebral hematoma.
【作者单位】：天津工业大学电子与信息工程学院;军事医学科学院卫生装备研究所;
【基金】：天津市科技计划项目(13ZCZDSY20100)
【分类号】：R651.15

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