Abstract
Purpose
Partial correlation analysis was performed to account for the interference of steatosis changes and inflammatory factors, to determine the true correlation between fibrosis and IVIM parameters (Dfast, Dslow, and F), and to evaluate the diagnostic efficacy of IVIM for liver fibrosis.
Methods
A total of 106 patients with metabolic dysfunction-associated steatotic liver disease (MASLD) examined by IVIM from November 2016 to November 2023 at our hospital were retrospectively included. Preliminary analysis of each IVIM parameter and correlations with pathological findings were performed using Spearman correlation analysis, and partial correlation analysis was used to exclude the interference of other pathological factors, thus yielding the true correlations between IVIM parameters (Dfast, Dslow, and F) and pathology. The diagnostic efficacy of IVIM parameters for diagnosing MASLD was assessed via receiver operating characteristic (ROC) curve analysis.
Results
Spearman correlation analysis of all the IVIM parameters revealed correlations with steatosis, lobular inflammation, and ballooning. Partial correlation analysis indicated that Dfast was correlated with the pathological fibrosis stage (r = − 0.593, P < 0.001), Dslow was correlated with the pathological steatosis score (r = − 0.313, P < 0.05), and F was correlated with the pathological fibrosis stage and steatosis score (r = − 0.456 and 0.255, P < 0.001 and P < 0.05). In the diagnosis of hepatic fibrosis, significant hepatic fibrosis, advanced liver fibrosis and cirrhosis, Dfast achieved areas under the ROC curve of 0.763, 0.801, 0.853, and 0.897, respectively. The threshold values for diagnosing different fibrosis stages using Dfast (10–3 mm2/s) were 57.613, 54.587, 52.714, and 51.978, respectively.
Conclusion
According to our partial correlation analysis, there was a moderate correlation between Dfast and F according to fibrosis stage, and Dfast was not influenced by inflammation or steatosis when diagnosing fibrosis in MASLD patients. A relatively close Dfast threshold is insufficient for accurately and noninvasively assessing various stages of MASLD fibrosis. In clinical practice, this approach can be considered an alternative method for the preliminary assessment of fibrosis in MASLD patients.
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Acknowledgements
The authors would like to express our enormous appreciation and gratitude to all participants.
Funding
This study has received funding by the National Natural Science Foundation of China (Nos. 61871276, 82071876, 62171298), Beijing Natural Science Foundation (No. 7184199), Capital’s Funds for Health Improvement and Research (No. 2018-2-2023), and Beijing Hospitals Authority Clinical Medicine Development of Special Funding Support (ZYLX202101).
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Ren, H., Xu, H., Yang, D. et al. Intravoxel incoherent motion assessment of liver fibrosis staging in MASLD. Abdom Radiol (2024). https://doi.org/10.1007/s00261-024-04207-w
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DOI: https://doi.org/10.1007/s00261-024-04207-w