Cited by 55Liver Disease Diagnosis and TreatmentAdvanced MRI Techniques and ApplicationsUltrasound Imaging and Elastography

Non-Invasive Imaging Methods to Evaluate Non-Alcoholic Fatty Liver Disease with Fat Quantification: A Review

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Jang, Weon, Song, Ji Soo·2023·Diagnostics

Abstract

Hepatic steatosis without specific causes (e.g., viral infection, alcohol abuse, etc.) is called non-alcoholic fatty liver disease (NAFLD), which ranges from non-alcoholic fatty liver (NAFL) to non-alcoholic steatohepatitis (NASH), fibrosis, and NASH-related cirrhosis. Despite the usefulness of the standard grading system, liver biopsy has several limitations. In addition, patient acceptability and intra- and inter-observer reproducibility are also concerns. Due to the prevalence of NAFLD and limitations of liver biopsies, non-invasive imaging methods such as ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) that can reliably diagnose hepatic steatosis have developed rapidly. US is widely available and radiation-free but cannot examine the entire liver. CT is readily available and helpful for detection and risk classification, significantly when analyzed using artificial intelligence; however, it exposes users to radiation. Although expensive and time-consuming, MRI can measure liver fat percentage with magnetic resonance imaging proton density fat fraction (MRI-PDFF). Specifically, chemical shift-encoded (CSE)-MRI is the best imaging indicator for early liver fat detection. The purpose of this review is to provide an overview of each imaging modality with an emphasis on the recent progress and current status of liver fat quantification.

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  • Imaging techniques are not ideal for mass screening due to significant drawbacks including high cost, lack of safety, lack of consensus, limited accessibility, and complexity.

    “However, these methods are usually used for disease diagnosis and are not ideal for mass screening due to significant drawbacks, including high cost (CT and MRI scans), lack of safety (CT scans), lack of consensus (biomarker-based indices), limited accessibility (transient elastography, MRI scans), and complexity (MRI scans) [41, 42].”

    From Effectiveness of body roundness index for the prediction of nonalcoholic fatty liver disease: a systematic review and meta-analysis (2025) · cites this paper as [41]

    The Conclusions (page not provided) identify MRI as costly and time-consuming and CT radiation exposure as a drawback. They do not say these methods are unsuitable for mass screening or substantiate CT cost, lack of consensus for biomarker-based indices, or limited access to transient elastography and MRI. The review instead describes CT as readily available. (LLM, conf=0.86)

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Authors
Jang, W., & Song, J. S.
Affiliations
Jeonbuk National University Hospital (KR)
Corresponding author
Song, Ji Soo
Venue
Diagnostics
Publisher
MDPI AG
Published
2023-05-25
Volume
13
Issue
11
Pages
1852
ISSN
2075-4418 (ISSN-L)
OpenAlex
W4378378984
Cited by
55
References
101
Citations by year
2026: 13 · 2025: 18 · 2024: 19 · 2023: 5
FWCI
2.15
Type
journal article
Language
en
Open access
Locations
  • Diagnostics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Jeonbuk National University
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Ultrasound Imaging and Elastography
Keywords
non-alcoholic fatty liver disease, hepatic steatosis, liver fat quantification, non-invasive imaging, liver ultrasound, computed tomography, magnetic resonance imaging, proton density fat fraction, chemical shift-encoded MRI, liver biopsy limitations, liver fibrosis

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