会议专题

Integrated Multi-Channel Subsystem for MR Signal Acquisition

A multi-channel digital subsystem for MR signal acquisition was designed to achieve parallel acquisition. The subsystem is based on FPGA. DSP and Power PC. Sample the multi-channel magnetic resonance signals at a high speed simultaneously and demodulate them directly. A digital down conversion (DDC) chip (AD6636) demodulate and decimate multi-channel signal under the DSP control. Power PC reads out the I/Q data of each channel at the same time with the signal sampling frequency up to 100 MSPS. The subsystem can be applied to magnetic field of 1T. Experiments show that four channels work well, and filter parameters can be changed easily by user. It is optimized for compact with high sampling rate and rich flexible filter design. It provides a high-performance signal acquisition design for parallel imaging.

Magnetic Resonance Imaging (MRI) Multi-Channel Digital Down Conversion (DDC) FPGA

Yang Wenhui Yan Zheng

Electromagnetic Imaging Research Group Institute of Electrical Engineering, CAS Beijing, China Graduate School Chinese Academy of Science Beijing, China

国际会议

2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)

上海

英文

2214-2216

2011-10-15(万方平台首次上网日期,不代表论文的发表时间)