Head and Neck Imaging
A Study on the Best Imaging Parameters of 3.0T MR Whole-body Diffusion Weighted Imaging*
Author：LI Zhi-juan, ZOU Yu-lin, QI Qiang et al.
affiliation：Department of Radiology, TungWah Hospital Affiliated to Sun Yat-sen University, Dongguan 523110, Guangdong Province, China
PDFAbstract
Objective To investigate the best imaging parameters of 3.0T MR whole-body diffusion weighted imaging (WB-DWI). Methods 30 healthy volunteers and 30 patients with malignant tumor underwent WB-DWI scan. The patients were randomly divided into 4 groups, 15 patients in each group. Main scanning parameters: The first groups using body coil, STIR-EPI, b=800s/mm2 , the second groups using phased array surface coil, STIR-EPI, b=800s/mm2 , the third groups using phased array surface coil, SPAIR-EPI, b=800s/mm2 , the fourth groups using phased array coil, STIR-EPI, b=400s/mm2 . Make an image quality score for all images, Compare the quality of WB-DWI images under different scanning parameters. Results The image quality of phased array surface scan is obviously better than that of body coil (P<0.01), the image quality of STIR-EPI is better than that of SPAIR-EPI (P<0.05), the image quality is not significantly different when the b=400s/mm2 and b=800s/mm2 (P>0.05). Conclusion Using phased array surface coils, STIR-EPI, b=800s/mm2 , FOV 40cm×40cm, TR=8000ms, and breathing evenly, the WB-DWI images have the best quality and moderate scanning time.
【Keyword】Magnetic Resonance Imaging; Diffusion Weighted Imaging; Whole Body Imaging
【Chart number】R445.2
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2018.04.044
Chinese journal of CT and MRI
th16Volume， th 4 Issue
2018Year04Month
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