波谱学杂志Issue(2)：393-398,6.DOI:10.11938/cjmr20150221
脉冲动态核极化增强的NMR和MRI系统研究
Development of Pulsed Dynamic Nuclear Polarization for Enhancing NMR and MRI
摘要
Abstract
In this report, we present a pulsed dynamic nuclear polarization (DNP) system, being reconfigurable for DNP enhanced magnetic resonance imaging (DNP-MRI) and magnetic resonance spectroscopy (DNP-MRS). Several novel console designs are proposed in the presented DNP system. A distributed digital architecture based on Peripheral Component Interconnect Express (PCIe) has been developed, so as to significantly improve the efficiency of data transmission and communication reliability as well as the precise control of pulse sequence. An external high speed Double Data Rate (DDR) memory chip is used for storing FID data and pulse sequence elements, greatly speeding up the execution of the pulse sequence and reducing the interval of TR and improving the accuracy of TR in image sequence. Using clock phase-shift technology, we can produce digital pulse accurately with high timing resolution of nanosecond timescales. Finally, two experimental examples for DNP-MRS and DNP-MRI are shown.关键词
核磁共振(NMR)/磁共振成像(MRI)/脉冲动态核极化/控制台/PCIeKey words
NMR/MRI/pulsed DNP/console/PCIe分类
数理科学引用本文复制引用
贺玉贵,刘朝阳,冯继文,张志,王超,倪胜,胡少斌,王东,陈方,刘买利..脉冲动态核极化增强的NMR和MRI系统研究[J].波谱学杂志,2015,(2):393-398,6.基金项目
Grant from the special equipment of scientific instrument of Chinese Academy of Sciences, the Ministry of Science and Technology of China (2011YQ120035) and the National Natural Science Foundation of China (11405264) （2011YQ120035）
