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Non-invasive hepatic fat quantification: Can multi-echo Dixon help?

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  • المؤلفون: Gupta A;Gupta A; Dixit R; Dixit R; Prakash A; Prakash A
  • المصدر:
    Radiologia brasileira [Radiol Bras] 2024 May 07; Vol. 57, pp. e20230125. Date of Electronic Publication: 2024 May 07 (Print Publication: 2024).
  • نوع النشر :
    Journal Article
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: Colegio Brasileiro De Radiologia Country of Publication: Brazil NLM ID: 1305000 Publication Model: eCollection Cited Medium: Print ISSN: 0100-3984 (Print) Linking ISSN: 01003984 NLM ISO Abbreviation: Radiol Bras Subsets: PubMed not MEDLINE
    • بيانات النشر:
      Original Publication: Rio De Janeiro : Colegio Brasileiro De Radiologia
    • نبذة مختصرة :
      Objective: To evaluate the diagnostic accuracy of multi-echo Dixon magnetic resonance imaging (MRI) in hepatic fat quantification, in comparison with that of magnetic resonance spectroscopy (MRS), on 3.0-T MRI.
      Materials and Methods: Fifty-five adults with no known liver disease underwent MRI in a 3.0-T scanner for determination of the hepatic fat fraction, with two techniques: multi-echo Dixon, in a manually drawn region of interest (ROI) and in the entire liver parenchyma (automated segmentation); and MRS. The diagnostic accuracy and cutoff value for multi-echo Dixon were determined, with MRS being used as the reference standard.
      Results: The mean fat fraction obtained by multi-echo Dixon in the manually drawn ROI and in the entire liver was 5.2 ± 5.8% and 6.6 ± 5.2%, respectively, whereas the mean hepatic fat fraction obtained by MRS was 5.7 ± 6.4%. A very strong positive correlation and good agreement were observed between MRS and multi-echo Dixon, for the ROI (r = 0.988, r 2 = 0.978, p < 0.001) and for the entire liver parenchyma (r = 0.960, r 2 = 0.922, p < 0.001). A moderate positive correlation was observed between the hepatic fat fraction and body mass index of the participants, regardless of the fat estimation technique employed.
      Conclusion: For hepatic fat quantification, multi-echo Dixon MRI demonstrated a very strong positive correlation and good agreement with MRS (often considered the gold-standard noninvasive technique). Because multi-echo Dixon MRI is more readily available than is MRS, it can be used as a rapid tool for hepatic fat quantification, especially when the hepatic fat distribution is not homogeneous.
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    • Contributed Indexing:
      Keywords: Fatty liver/diagnosis; Magnetic resonance imaging/methods; Magnetic resonance spectroscopy; Non-alcoholic fatty liver disease/diagnosis
      Local Abstract: [Publisher, Portuguese] Avaliar a acurácia diagnóstica da técnica multieco Dixon na quantificação da gordura hepática em comparação com a espectroscopia por ressonância magnética (ERM), em exames de RM 3.0-T. [Publisher, Portuguese] Cinquenta e cinco participantes adultos sem doença hepática conhecida foram submetidos a RM 3.0-T para determinação da fração de gordura hepática, usando duas técnicas: multieco Dixon (em ROI desenhada manualmente e em segmentação automatizada para todo o parênquima hepático) e ERM. A precisão diagnóstica e o valor de corte para multieco Dixon foram determinados usando a ERM como padrão de referência. [Publisher, Portuguese] A fração de gordura média usando multieco Dixon na ROI desenhada manualmente e na segmentação automatizada do fígado inteiro foi 5,2 ± 5,8% e 6,6 ± 5,2%, respectivamente. A fração de gordura hepática média usando ERM foi 5,7 ± 6,4%. Correlação positiva muito alta e forte concordância foram observadas entre ERM e multieco Dixon, tanto para ROI (r = 0,988, r 2 = 0,978, p < 0,001) quanto para todo o parênquima hepático (r = 0,960, r 2 = 0,922, p < 0,001). Correlação positiva moderada foi observada entre a fração de gordura hepática e o índice de massa corpórea dos participantes usando ambas as técnicas de estimativa de gordura. [Publisher, Portuguese] Multieco Dixon demonstrou correlação positiva muito alta e concordância com a ERM (muitas vezes considerada padrão de referência não invasivo) para quantificação de gordura hepática. Uma vez que o multieco Dixon está mais prontamente disponível do que a ERM, pode ser usado como uma ferramenta rápida para a quantificação da gordura hepática, especialmente na distribuição não homogênea da gordura.
    • الموضوع:
      Date Created: 20240712 Latest Revision: 20240714
    • الموضوع:
      20250114
    • الرقم المعرف:
      PMC11235074
    • الرقم المعرف:
      10.1590/0100-3984.2023.0125
    • الرقم المعرف:
      38993969