Optimized the Pulse Sequence of Diffusion Weighted Spectroscopy in Magnetic Resoance Imaging

摘要：

Diffusion weighted spectroscopy (DWS) provides a noninvasive method to investigate the diffusion property of water and several metabolites in vivo. However, due to the poor temporal and spatial resolution, DWS was seldom used in clinical and research application. We proposed an interleaving gradient magnetic field method based on point resolved spectroscopy (PRESS). Four interlaced powerful diffusion sensitive gradient magnetic fields were positioned around the two π refocusing radio frequency pulses in the PRESS sequence. This method utilizes the interval time in the PRESS pulse sequence, doubles the duration time of the diffusion sensitive gradient magnetic field and decreases the detrimental effect of the induced eddy current. The results show that this optimized method is suitable to implement in the conventional magnetic resonance scanners.

作者: Huailing Zhang Song Gao

作者单位: Public Health School Guangdong Medical College Dongguan, Guangdong, China Medical Physics Department Health Science Center of Peking University Beijing, China

会议类型: 国际会议

会议名称: The 4th International Conference on Bioinformatics and Biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

会议地点: 成都

会议语种:英文

页码: 1-3

在线出版日期: 2010-06-18（万方平台首次上网日期，不代表论文的发表时间）