并行磁共振成像GRAPPA-SENSE技术

Parallel magnetic resonance image technology of GRAPPA-SENSE

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.