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• Technical Article •
A comparation analysis between IDEAL-IQ and mDixon Quant techniques in fat quantification of abdomen and vertebrae
LIU Na  ZHANG Haonan  ZHANG Yukun  MIAO Yanwei  SONG Qingwei 

Cite this article as: Liu N, Zhang HN, Zhang YK, et al. A comparation analysis between IDEAL-IQ and mDixon Quant techniques in fat quantification of abdomen and vertebrae[J]. Chin J Magn Reson Imaging, 2022, 13(3): 49-53. DOI:10.12015/issn.1674-8034.2022.03.010.


[Abstract] Objective To explore the differences in the quantitative assessment of fat fraction (FF) of liver, pancreas and lumbar vertebral body on the iterative decomposition of water and fat with echo asymmetry and least-squares estimation quantitation sequence (IDEAL-IQ) and mDixon Quant sequence on different platforms of 3.0 T MR device.Materials and Methods Prospectively included 36 healthy volunteers (15 males and 21 females; age 24.39±2.28 years), IDEAL-IQ and mDixon Quant sequences were performed on two different platforms of the 3.0 T MR to scan the epigastrium and lumbar vertebral body. Two observers measured the FF values of liver, pancreas, and lumbar (L1-L5) vertebral bodies in all volunteers and performed a comparative analysis between the two sequences.Results The data measured by the two observers were consistently good (intra-class correlation coefficients＞0.75). IDEAL-IQ and mDixon Quant sequence showed that, the FF values of liver were 3.74±0.89, 3.69±0.80; FF values of pancreas were 4.66±1.37, 4.63±1.35; FF values of lumbar vertebral body L1 were 32.29±7.98, 32.32±7.85; L2 were 35.08±9.15, 35.08±9.20; L3 were 37.75±9.93, 37.61±9.82; L4 were 37.15±9.82, 37.26±9.84; L5 were 37.79±9.58, 37.72±9.54, there was no significant difference (P＞0.05).Conclusions Both IDEAL-IQ and mDixon Quant sequences can quantitatively measure FF values of liver, pancreas, and lumbar vertebral body, its measurements are highly consistent.
[Keywords] lumbar vertebrae；pancreas；liver；fat quantification；magnetic resonance imaging

LIU Na   ZHANG Haonan   ZHANG Yukun   MIAO Yanwei   SONG Qingwei*  

Department of Radiology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China

Song QW, E-mail: songqw1964@163.com

Conflicts of interest   None.

ACKNOWLEDGMENTS Liaoning Provincial Department of Education Fund Project (No. LJKZ0856); Horizontal Project Fund Project (No. 2021HZ006).
Received  2021-09-01
Accepted  2022-02-11
DOI: 10.12015/issn.1674-8034.2022.03.010
Cite this article as: Liu N, Zhang HN, Zhang YK, et al. A comparation analysis between IDEAL-IQ and mDixon Quant techniques in fat quantification of abdomen and vertebrae[J]. Chin J Magn Reson Imaging, 2022, 13(3): 49-53. DOI:10.12015/issn.1674-8034.2022.03.010.

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