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Drug Dosing in Renal Diseases: Measurement of Glomerular Filtration Rate01:25

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The glomerular filtration rate (GFR) is a critical indicator of kidney health, reflecting how well the kidneys filter blood. Changes in GFR can signal potential kidney impairment, necessitating accurate measurement methods to monitor kidney function effectively.Various molecules can serve as markers for GFR measurement, with the ideal marker meeting several specific criteria. It must freely filter at the glomerulus, avoid reabsorption or secretion by the renal tubules, remain unmetabolized, not...
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In healthy individuals, serum creatinine levels remain stable due to a balance between its constant production—primarily from muscle metabolism—and renal excretion. Creatinine is freely filtered by the glomeruli, making it a valuable marker for estimating renal function. When the glomerular filtration rate (GFR) decreases, the kidneys can only eliminate less creatinine, causing serum levels to rise.Serum creatinine concentration is widely used to estimate creatinine clearance (Clcr), a...
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Updated: May 22, 2026

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Ultrasound-Based Hepatorenal Index (HRI): Measurement Principles, Normal Values, and Clinical Application.

Nils Daum1,2, Yi Dong3, Michael Ludwig4

  • 1Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, Department of Anesthesiology and Intensive Care Medicine (CCM/CVK), Germany, Berlin.

Zeitschrift Fur Gastroenterologie
|May 20, 2026
PubMed
Summary
This summary is machine-generated.

The hepatorenal index (HRI) offers a simple ultrasound method to detect fatty liver disease. This quantitative tool compares liver and kidney echogenicity, aiding in early diagnosis and grading of hepatic steatosis.

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Published on: June 18, 2020

Area of Science:

  • Hepatology
  • Medical Imaging
  • Diagnostic Ultrasound

Background:

  • Ultrasound is a primary, non-invasive imaging tool in hepatology.
  • Advancements like shear-wave elastography and the hepatorenal index (HRI) enhance diffuse liver disease assessment.
  • The HRI is a quantitative ultrasound parameter for evaluating hepatic steatosis.

Purpose of the Study:

  • To evaluate the utility of the hepatorenal index (HRI) as a non-invasive tool for detecting and grading hepatic steatosis.
  • To highlight the simplicity, reproducibility, and applicability of HRI in routine abdominal ultrasound.
  • To discuss factors influencing HRI accuracy and challenges in standardization.

Main Methods:

  • Quantitative ultrasound parameter comparing liver echogenicity to right renal cortex.
  • Utilizes routine abdominal ultrasound without additional equipment.
  • Analysis of HRI values for detecting and grading hepatic steatosis.

Main Results:

  • Normal HRI values range from 0.8 to 1.2.
  • HRI values above 1.4-1.5 suggest hepatic steatosis.
  • Values exceeding 2.0 indicate significant fatty infiltration.

Conclusions:

  • The hepatorenal index (HRI) is a valuable, non-invasive ultrasound method for diagnosing and grading hepatic steatosis.
  • Image quality, ROI placement, and equipment settings impact HRI accuracy.
  • Standardization and AI integration are crucial for future HRI development.