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Application of local shimming in whole body diffusion weighted imaging
ZHU Xiao-fei  LIU Jin  ZHU Kai-guo  HAN Yu  XIU Si-jie  ZHANG Fan 

DOI:10.12015/issn.1674-8034.2018.01.012.


[Abstract] Objective: To discuss the application of local shimming in whole-body diffusion-weighted imaging (WB-DWI) for improving the quality of imaging.Materials and Methods: Forty consecutive patients who underwent WB-DWI scans were included in this study. All of them received two kinds of WB-DWI scans, i.e. with local shimming and without local shimming at the cervicothoracic junction. After that, 3D maximum intensity projection (MIP) images were reconstructed to check the truncation artifact.Results: The truncation artifact significantly decreased in images with local shimming compared to those without local shimming. Their image quality showed statistical difference (P<0.01).Conclusions: Local shimming has important significance in reducing truncation artifact and improving the image quality in WB-DWI.
[Keywords] Whole body imaging；Magnetic resonance imaging

ZHU Xiao-fei* Department of Radiology, Tangdu Hospital, the Fourth Military Medical University, Xian 710038, China

LIU Jin Department of Radiology, Tangdu Hospital, the Fourth Military Medical University, Xian 710038, China

ZHU Kai-guo Department of Radiology, Tangdu Hospital, the Fourth Military Medical University, Xian 710038, China

HAN Yu Department of Radiology, Tangdu Hospital, the Fourth Military Medical University, Xian 710038, China

XIU Si-jie Department of Radiology, Tangdu Hospital, the Fourth Military Medical University, Xian 710038, China

ZHANG Fan Department of Radiology, Tangdu Hospital, the Fourth Military Medical University, Xian 710038, China

*Correspondence to: Zhu XF, E-mail: fly_zhuxiaofei@126.com

Conflicts of interest   None.

Received  2017-05-22
Accepted  2017-10-15
DOI: 10.12015/issn.1674-8034.2018.01.012
DOI:10.12015/issn.1674-8034.2018.01.012.

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