基于磁感应相位移谱方法的脑出血模拟测试系统的性能研究  

Performance of cerebral hemorrhage simulation detection system based on magnetic phase shift spectrum method

作　　者：徐林[1] 秦明新[1] 王超[2] 郭万有[2] 金贵[1] 宁旭[1] 许佳[1] 

机构地区：[1]第三军医大学生物医学工程与医学影像学院,重庆400030 [2]西安电子科技大学,陕西西安710126

出　　处：《生物医学工程与临床》2011年第6期505-508,共4页Biomedical Engineering and Clinical Medicine

基　　金：国家自然科学基金项目(61072254)

摘　　要：目的基于脑出血模拟物理模型和研制的脑出血检测系统,实验研究和评估脑出血检测系统的性能。方法采用磁感应相位移谱(PSSMI)方法,在3个频率(f1、f2和f3)下进行检测,脑出血的程度用0～100 mL NaCl溶液进行模拟。结果检测系统的相位差分辨率可以达0.005°,增益在-10～35 dB范围可调,而且检测相位差的大小与溶液的体积、溶液的电导率及工作频率成正比例关系。结论研制的脑出血检测系统是可行的。Objective To study the performance of a new detection system for cerebral hemorrhage based on a new physical model of cerebral hemorrhage.Methods The phase shift spectroscopy of magnetic induction（PSSMI） method was used at three operation frequencies（f1,f2,f3）.Different cerebral hemorrhage levels were simulated with saline solution of 0 to 100 mL.Results The phase resolution was up to 0.005°,the gain was in an adjustable range of-10-35 dB in detection system.The results of experimental simulation showed that the phase shift was proportional to the volume,conductivity of solution and the operation frequency.Conclusion It is demonstrated that the developed cerebral hemorrhage detection system is feasible.

关 键 词：脑出血 相位差 电磁感应 

分 类 号：R318.0[医药卫生—生物医学工程]