波谱学杂志2018，Vol.35Issue(2)：170-177,8.DOI:10.11938/cjmr20172594
磁共振成像谱仪B0信号的高精度发生与测试
High Accuracy Generation and Test of B0 Signals on Magnetic Resonance Imaging Spectrometer
摘要
Abstract
A field programmable gate array (FPGA)-based method is proposed to generate B0 signals, with high accuracy, on magnetic resonance imaging (MRI) spectrometers. The FPGA reads the waveform data and external parameters, and stores them in the dual-port random access memory (RAM) and parameter registers, respectively. The B0 signals are then generated using the pre-emphasis algorithm, and different time or amplitude parameters give different B0 signals. The B0 signals are collected by high speed acquisition card, and the least squares fitting algorithm is used to test the accuracy of the B0signals generated.The performance of this method was validated by experiments.关键词
磁共振成像(MRI)/谱仪/B0信号/现场可编程门阵列(FPGA)/数据采集卡Key words
magnetic resonance imaging (MRI)/spectrometer/B0 signals/field programmable gate array (FPGA)/data acquisition card分类
数理科学引用本文复制引用
崔妍,肖亮..磁共振成像谱仪B0信号的高精度发生与测试[J].波谱学杂志,2018,35(2):170-177,8.基金项目
国家自然科学基金资助项目(81227003). （81227003）
