Evidence mapPaperPMID 42273144Full record

ArticleQuantitative imaging in medicine and surgery2026

Renal R2* as a noninvasive predictor of hepatorenal syndrome-acute kidney disease in cirrhotic patients with ascites: a retrospective cohort study.

Jae Hyon Park, Hee Jun Park, Daeun Choi, Jongjin Yoon

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Article in Quantitative imaging in medicine and surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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4 authors.

Jae Hyon ParkDepartment of Radiology, Armed Forces Daejeon Hospital, Daejeon, Korea.ORCID https://orcid.org/0000-0002-7626-194X
Hee Jun ParkDepartment of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0009-0006-6829-6196
Daeun ChoiDepartment of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0001-9741-926X
Jongjin YoonDepartment of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0003-4733-7658

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6 · The paper itself

Abstract

Background: Hepatorenal syndrome-acute kidney disease (HRS-AKD) is associated with poor renal outcomes in cirrhotic patients, yet no established noninvasive imaging marker exists for its early prediction. This study evaluated renal R2* derived from magnetic resonance elastography (MRE) with multi-echo R2* mapping as a noninvasive imaging marker for predicting the development of HRS-AKD in cirrhotic patients with ascites. Methods: This retrospective observational study analyzed 376 patients who underwent liver MRE with multi-echo R2* mapping between January 2018 and October 2024. Median renal R2* values were quantified from the left kidney using radiomics-based analysis. HRS-AKD was defined as an estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m Results: Among cirrhotic patients with ascites, 12.9% developed HRS-AKD; 62.5% had a prior episode of HRS-acute kidney injury (AKI). Median renal R2* was higher in patients who developed HRS-AKD (P=0.007), and inversely correlated with eGFR measured at MRE (r=-0.34, P=0.006). Renal R2* did not correlate with serum iron markers or hemoglobin (all P≥0.05). The area under the receiver operating characteristic curve (AUROC) of renal R2* was 74.5 [95% confidence interval (CI): 57.4-91.6] for predicting HRS-AKD, outperforming liver stiffness and serum fibrosis markers. An R2* cut-off of 20.8 s Conclusions: Renal R2* is a promising noninvasive imaging marker candidate for predicting the development of HRS-AKD in cirrhotic patients with ascites.

Indexed as

Elasticity imaging techniquehepatorenal syndromeliver cirrhosismagnetic resonance imaging (MRI)renal insufficiency

Identifiers

PMID42273144
PMCPMC13247944

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.