Design and implementation of a high frequency electrical impedance tomography system

被引：45
|
作者：
Halter, R [1 ]
Hartov, A [1 ]
Paulsen, KD [1 ]
机构：
[1] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA
来源：
PHYSIOLOGICAL MEASUREMENT | 2004年 / 25卷 / 01期
关键词：
electrical impedance tomography; EIT; EIS; tissue impedance; impedance tomography hardware;
D O I：
10.1088/0967-3334/25/1/041
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Electrical impedance tomography is an imaging modality being investigated for use in detection of breast cancer. Use of higher frequencies than have typically been employed may benefit the detection processes. In this current work we discuss the design and initial implementation of a system having a bandwidth of 10 MHz. Previous investigations into high frequency designs have proven more difficult than anticipated and shown that careful selection of systems architecture is critical to achieving broadband performance above I MHz. The design for this new system is based on a digital signal processor (DSP) which is used for control, signal generation and signal processing. Signal generation and detection, software design and preliminary system specifications are discussed.
引用
收藏
页码：379 / 390
页数：12
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