Possibilities of Dixon sequences in magnetic resonance imaging for fat fraction quantification: a phantom study
- Authors: Panina O.Y.1,2, Gromov A.I.3,4, Ahkmad E.S.1, Semenov D.S.1, Kivasev S.A.5, Petraikin A.V.1, Nechaev V.A.2
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Affiliations:
- Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies
- Moscow City Hospital named after S.S. Yudin
- Russian University of Medicine
- National Medical Research Radiological Center
- Central Clinical Hospital “RZD-Medicine”
- Issue: Vol 6, No 2 (2025)
- Pages: 191-202
- Section: Original Study Articles
- URL: https://journals.rcsi.science/DD/article/view/310209
- DOI: https://doi.org/10.17816/DD633802
- EDN: https://elibrary.ru/WDZWBY
- ID: 310209
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Abstract
BACKGROUND: The accuracy of quantitative parameters obtained using magnetic resonance imaging is of scientific and practical interest. Monitoring of scan parameters and standardization of commonly used approaches to assess fat fraction remain challenging in radiology.
AIM: This study aimed to evaluate the possibility of fat fraction quantification using standard Dixon pulse sequences through phantom modeling.
METHODS: This multicenter, cross-sectional, nonblinded experimental study used direct oil-in-water emulsions to model substances with varying fat concentrations. Test tubes containing these emulsions were placed in a cylindrical phantom. The emulsions were prepared with mixtures of vegetable oils, with fat fraction values of 10%–60%. Several tests were conducted using scanners from different manufacturers and with varying magnetic field strengths: Optima MR450w, 1.5 T; MAGNETOM Skyra, 3 T; Ingenia, 1.5 T; and Ingenia Achieva dStream, 3.0 T at different medical centers. Fat fraction was obtained using standard formulas based on signal intensity measurements. A regression analysis was conducted to assess the linear relationship between the measured and predefined fat fraction concentrations and an F-test to evaluate variability.
RESULTS: Phantom modeling was employed to determine the performance of Dixon pulse sequences across different magnetic resonance imaging scanners for quantitative fat fraction estimation using relevant formulas. In assessing the accuracy of fat fraction quantification, a weak linear correlation was found between the obtained values and predefined fat fraction concentrations. Additionally, significant deviations >5% were observed for certain scanners. Reproducibility analysis demonstrated variability in fat fraction concentration across different scanner models and within the same model.
CONCLUSION: Obtained results confirm that fat fraction quantification using Dixon pulse sequences and relevant formulas should be performed only after preliminary phantom scanning. The use of a phantom ensures adequate quality control and calibration of the magnetic resonance imaging scanner, making accurate quantitative fat measurement more reliable and widely accessible.
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##article.viewOnOriginalSite##About the authors
Olga Yu. Panina
Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies; Moscow City Hospital named after S.S. Yudin
Author for correspondence.
Email: olgayurpanina@gmail.com
ORCID iD: 0000-0002-8684-775X
SPIN-code: 5504-8136
MD
Russian Federation, 24 Petrovka st, bldg 1, Moscow, 127051; MoscowAlexander I. Gromov
Russian University of Medicine; National Medical Research Radiological Center
Email: gai8@mail.ru
ORCID iD: 0000-0002-9014-9022
SPIN-code: 6842-8684
MD, Dr. Sci. (Medicine), Professor
Russian Federation, Moscow; MoscowEkaterina S. Ahkmad
Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies
Email: akhmades@zdrav.mos.ru
ORCID iD: 0000-0002-8235-9361
SPIN-code: 5891-4384
Russian Federation, 24 Petrovka st, bldg 1, Moscow, 127051
Dmitry S. Semenov
Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies
Email: semenovds4@zdrav.mos.ru
ORCID iD: 0000-0002-4293-2514
SPIN-code: 2278-7290
Cand. Sci. (Engineering)
Russian Federation, 24 Petrovka st, bldg 1, Moscow, 127051Stanislav A. Kivasev
Central Clinical Hospital “RZD-Medicine”
Email: Kivasev@yahoo.com
ORCID iD: 0000-0003-1160-5905
SPIN-code: 9883-3406
MD
Russian Federation, MoscowAlexey V. Petraikin
Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies
Email: PetryajkinAV@zdrav.mos.ru
ORCID iD: 0000-0003-1694-4682
SPIN-code: 6193-1656
MD, Dr. Sci. (Medicine)
Russian Federation, 24 Petrovka st, bldg 1, Moscow, 127051Valentin A. Nechaev
Moscow City Hospital named after S.S. Yudin
Email: NechaevVA1@zdrav.mos.ru
ORCID iD: 0000-0002-6716-5593
SPIN-code: 2527-0130
MD, Cand. Sci. (Medicine)
Russian Federation, MoscowReferences
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