Optimization Design of Sensors for Maximum Primary Field Cancellation in Biomedical Magnetic Induction Tomography
Magnetic induction tomography (MIT) in vivo is to reconstruct conductivity of biomedical tissue by coil sensors which are imposed alternating current as well as detecting signals induced by tissue around the coils. In addition to the secondary signals due to tissue parameters, the resulting signals also include the primary field signals contributed by excitation coils which are approximately 5 times orders of the secondary signals. This not only reduces measurement precision, but also affects reconstruction image resolution. Optimization coil sensors can cancel primary field greatly at source. The paper presents coil sensors arrangement suitable for Biomedical magnetic induction tomography. Relative position between the excitation and detection coils was adjusted to reduce the primary signals in resulting signals. Simulation was performed from single-channel to multiple-channels system. The measurement results of all the systems suggest that the signal due to the primary field can be reduced individually at the operating frequency of 10Mz.
Magnetic induction tomography (MIT) Coil sensors Excitation coils Reconstruction image resolution
Xu Wang Yi Lv Yuyan Chen Dan Yang
School of Information Science and Engineering Northeastern University, Shenyang, Liaoning province, School of Information Science and Engineering, Northeastern University, Shenyang and the School of I
国际会议
2011 China Control and Decision Conference(2011中国控制与决策会议 CCDC)
四川绵阳
英文
602-605
2011-05-23（万方平台首次上网日期，不代表论文的发表时间）