DIXON序列在磁共振成像中用于脂肪分数定量评估的潜力:一项体模研究
- 作者: 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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隶属关系:
- 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”
- 期: 卷 6, 编号 2 (2025)
- 页面: 191-202
- 栏目: 原创性科研成果
- 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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全文:
详细
论证。磁共振成像获得的定量指标的准确性具有重要的科学和实际意义。对扫描参数的控制以及脂肪分数评估通用方法的标准化,是当前影像诊断工作中的关键任务之一。
目的: 通过体模建模实验,评估采用标准DIXON脉冲序列进行脂肪分数定量测量的可行性。
方法。开展一项多中心、横断面、非盲实验研究。为模拟不同脂肪浓度的物质,选择了 “油包水”型直接乳液。将乳液装入试管后置于专用圆柱形体模中。乳液由植物油混合物制成,脂肪分数范围为10–60%。在多家医疗机构使用不同厂商和磁场强度的磁共振成像设备(Optima MR450w 1.5T、MAGNETOM Skyra 3T、Ingenia 1.5T和Ingenia Achieva dStream 3.0T)进行扫描。依据通用计算公式,通过信号强度计算脂肪分数。对测得的脂肪分数浓度与设定值之间的线性关系进行了回归分析,同时采用F检验评估测量结果的变异性。
结果。利用体模建模,在不同型号的磁共振成像设备上,对DIXON脉冲序列按相关公式进行脂肪分数定量测量的性能进行了验证。对脂肪分数定量测量准确性的评估结果显示,其测得值与设定浓度之间仅存在较弱的线性关系。此外,在部分磁共振成像设备中发现了具有统计学显著性的偏倚,幅度超过5%。测量重现性评估显示,不同型号磁共振成像设备之间以及同一型号设备内部的脂肪分数变异性存在差异。
结论。研究结果证实,只有在进行体模扫描验证之后,方可依据相关公式使用DIXON脉冲序列进行脂肪分数的定量计算。体模的应用可实现对磁共振成像设备的质量控制与校准,从而使脂肪的定量测量更加可靠且具备更广泛的适用性。
作者简介
Olga Yu. Panina
Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies; Moscow City Hospital named after S.S. Yudin
编辑信件的主要联系方式.
Email: olgayurpanina@gmail.com
ORCID iD: 0000-0002-8684-775X
SPIN 代码: 5504-8136
MD
俄罗斯联邦, 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 代码: 6842-8684
MD, Dr. Sci. (Medicine), Professor
俄罗斯联邦, 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 代码: 5891-4384
俄罗斯联邦, 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 代码: 2278-7290
Cand. Sci. (Engineering)
俄罗斯联邦, 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 代码: 9883-3406
MD
俄罗斯联邦, 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 代码: 6193-1656
MD, Dr. Sci. (Medicine)
俄罗斯联邦, 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 代码: 2527-0130
MD, Cand. Sci. (Medicine)
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