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.
出处
《生物医学工程与临床》
CAS
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)
关键词
脑出血
相位差
电磁感应
cerebral hemorrhage
phase shift
magnetic induction
