期刊
CLINICAL IMAGING
卷 51, 期 -, 页码 38-42出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.clinimag.2018.01.011
关键词
DIXON; Fat; MRI; Liver; Phantom; Quantification
资金
- Grants-in-Aid for Scientific Research [15K08703] Funding Source: KAKEN
Purpose: To evaluate the reproducibility of proton density fat fraction (PDFF) and T2* in a fat-water phantom on three different 3 T MRI systems using 6-point DIXON methods. Methods: A phantom which included varying fat volume percentages (true fat fraction [FF]) was scanned by three 3T MR machines, and PDFF and T2* were measured. Results: The mean difference between true FF and PDFF was small in all vendors ( 2.11% to 0.41%). However, the difference ratio for T2* values was large among vendors (1.79 to 3.36). Conclusions: True FF and PDFF were consistent across vendors; however, T2* varied greatly.
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