Halter Ryan, Hartov Alex, Paulsen Keith D
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Physiol Meas. 2004 Feb;25(1):379-90. doi: 10.1088/0967-3334/25/1/041.
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 1 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.
电阻抗断层成像术是一种正在研究用于乳腺癌检测的成像方式。使用比通常采用的频率更高的频率可能有利于检测过程。在当前这项工作中，我们讨论了一个带宽为10兆赫兹的系统的设计和初步实现。先前对高频设计的研究已证明比预期更困难，并表明系统架构的精心选择对于实现高于1兆赫兹的宽带性能至关重要。这个新系统的设计基于一个用于控制、信号生成和信号处理的数字信号处理器（DSP）。讨论了信号生成与检测、软件设计以及初步的系统规格。
