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Related Experiment Videos

Liver angioscintigraphy: clinical applications.

Mircea Dragoteanu1, Sabin O Cotul, Cecilia Pîgleşan

  • 1Department of Nuclear Medicine, 3rd Medical Clinic, Str. Croitorilor 19-21, 400162 Cluj-Napoca, Romania. mircea.dragoteanu@xnet.ro

Romanian Journal of Gastroenterology
|April 1, 2004
PubMed
Summary

Liver angioscintigraphy (LAS) assesses liver blood flow using the hepatic perfusion index (HPI). Elevated HPI over 50% indicates liver cirrhosis or tumors, aiding early diagnosis of hepatic metastases.

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Area of Science:

  • Nuclear medicine
  • Hepatology
  • Radiology

Background:

  • Liver angioscintigraphy (LAS) is a radio-isotope imaging technique.
  • It evaluates liver perfusion and alterations in hepatic diseases.
  • LAS quantifies arterial and portal venous blood flow fractions.

Purpose of the Study:

  • To detail the diagnostic utility of LAS in various liver conditions.
  • To establish the significance of the hepatic perfusion index (HPI) in disease assessment.
  • To highlight LAS's role in early detection of liver metastases.

Main Methods:

  • Utilizes radio-isotope tracers to visualize liver blood flow.
  • Calculates the hepatic perfusion index (HPI) from arterial and portal flow measurements.
  • Integrates splenic curves, per rectal scintigraphy, and liver SPECT for comprehensive analysis.

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Main Results:

  • Normal HPI ranges from 25% to 40%.
  • HPI > 50% suggests arterialization, indicative of liver cirrhosis or tumors.
  • Malignant tumors (metastases, primary) show HPI of 65%-90%, often detected before morphological imaging.
  • LAS aids in early diagnosis of liver metastases, particularly from colorectal cancer.

Conclusions:

  • LAS provides valuable hemodynamic staging for chronic inflammatory liver diseases.
  • It is an effective early diagnostic tool for liver metastases.
  • LAS has applications in monitoring drug toxicity, portal vein permeability, and post-surgical follow-up.