并行磁共振成像GRAPPA-SENSE技术  

Parallel magnetic resonance image technology of GRAPPA-SENSE

作　　者：王达[1] 包尚联[1] 

机构地区：[1]北京大学重离子物理研究所医学物理和工程北京市重点实验室,北京100871

出　　处：《中国医学影像技术》2011年第8期1688-1693,共6页Chinese Journal of Medical Imaging Technology

基　　金：国家自然科学基金(30970772);国家重点基础研究发展计划(973计划)项目(2011CB707701);北京市教委共建项目(JD100010607)

摘　　要：并行磁共振成像技术已在MRI领域被广泛应用。本研究提出一种新的并行成像方法,命名为GRAPPA-SENSE。此法应用GRAPPA(generalized autocalibrating partially parallel acquisitions)算法内插出部分K空间中心未采集数据,生成更为精确的SC-SENSE(self-calibrating sensitivity encoding)重建算法所需的线圈敏感度函数。标准水模实验证明此方法可改善图像质量。Parallel magnetic resonance image technology has been widely used in MRI field.A novel method named as GRAPPA-SENSE was proposed in this paper.GRAPPA-SENSE was developed using generalized autocalibrating partially parallel acquisitions（GRAPPA） algorithm to intervene more missing lines in central K-space in order to generate accurate coil sensitivities for self-calibrating sensitivity encoding（SC-SENSE） algorithm.This method was tested by using experimental data of a standard water phantom,and the results demonstrated that the image quality had been improved.

关 键 词：GRAPPA算法 SENSE算法 线圈敏感度 

分 类 号：R312[医药卫生—基础医学]