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Related Experiment Video

Updated: May 21, 2026

MRI and PET in Mouse Models of Myocardial Infarction
10:46

MRI and PET in Mouse Models of Myocardial Infarction

Published on: December 19, 2013

A three-dimensional model-based partial volume correction strategy for gated cardiac mouse PET imaging.

Tyler Dumouchel1, Stephanie Thorn, Myra Kordos

  • 1Molecular Function and Imaging Program and the National Cardiac PET Centre, Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, Canada.

Physics in Medicine and Biology
|June 19, 2012
PubMed
Summary

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A new partial volume (PV) correction method enhances accuracy in cardiac mouse positron emission tomography (PET) imaging. This technique improves quantification of myocardial activity, crucial for research involving FDG imaging in mice.

Area of Science:

  • Medical Imaging
  • Nuclear Medicine
  • Cardiovascular Research

Background:

  • Cardiac mouse positron emission tomography (PET) imaging quantification is limited by spatial resolution.
  • Partial volume (PV) effects cause underestimation of myocardial activity due to spillover into adjacent organs.

Purpose of the Study:

  • To develop and validate a PV correction method for improving the accuracy of activity distribution in FDG mouse cardiac PET imaging.

Main Methods:

  • A PV correction model was developed using a 3D point spread function convolution.
  • The model incorporated myocardial, background, and blood activity compartments based on endocardial radius and wall thickness.
  • Validation involved digital simulations, a 3D mouse LV phantom, and in vivo mouse imaging with ex vivo biodistribution measurements.

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Related Experiment Videos

Last Updated: May 21, 2026

MRI and PET in Mouse Models of Myocardial Infarction
10:46

MRI and PET in Mouse Models of Myocardial Infarction

Published on: December 19, 2013

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals
11:09

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals

Published on: December 16, 2022

Main Results:

  • The PV correction algorithm improved recovery from 50% to within 5% of true values in phantom studies.
  • Myocardial LV recovery improved from 0.56 to 1.13 (without scatter/attenuation correction).
  • Image uniformity improved by 5-13%, from 26% to 17% (without scatter/attenuation correction).

Conclusions:

  • Image-based PV correction significantly increases PET image activity accuracy and improves activity distribution uniformity in mice.
  • The algorithm shows potential for application with various tracers, in transgenic models, and across species with adequate image quality.