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A Reference Interval for CT-Based Liver Volume in Dogs without Hepatic Disease.

Reo Nishi1, George Moore2, Masahiro Murakami1

  • 1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA.

Veterinary Sciences
|September 27, 2024
PubMed
Summary
This summary is machine-generated.

This study establishes a normal reference range for canine liver volume using computed tomography (CT) volumetry. The findings provide essential data for diagnosing liver disease in dogs.

Keywords:
canine liver diseasehepatic volumeliver segmentationliver size

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Area of Science:

  • Veterinary medicine
  • Diagnostic imaging
  • Hepatology

Background:

  • Computed tomography (CT) volumetry is a precise method for measuring liver volume in veterinary medicine.
  • A validated reference interval for normal liver volume in dogs using CT volumetry is currently lacking.
  • Accurate liver volume assessment is crucial for diagnosing and managing canine hepatic diseases.

Purpose of the Study:

  • To define a statistically significant reference interval for canine liver volume using CT volumetry.
  • To establish normal weight-based liver volume ranges in dogs without a history of hepatic disease.
  • To provide a benchmark for identifying abnormal liver volumes in canine patients.

Main Methods:

  • Retrospective review of medical records from 121 dogs without hepatic disease who underwent abdominal CT scans.
  • Liver volumes were quantified using CT volumetry and normalized by body weight (cm³/kg).
  • Statistical analysis was performed to determine a 90% confidence interval for the reference range.

Main Results:

  • The median normalized CT-based liver volume in the study cohort was 22.2 cm³/kg.
  • A weight-based reference interval for CT-based liver volume was established: lower limit of 11.1-15.5 cm³/kg to an upper limit of 31.9-42.6 cm³/kg (90% CI).
  • These results provide the first statistically significant reference interval for normal canine liver volume.

Conclusions:

  • This study successfully defined a reference interval for CT-based liver volume in healthy dogs.
  • The established reference range aids in the quantitative assessment of liver volume changes in dogs with hepatic conditions.
  • These findings enhance the diagnostic capabilities of CT volumetry in veterinary hepatology.