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Updated: Jun 16, 2026

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals
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Static Versus Dynamic Teboroxime Myocardial Perfusion SPECT in Canines.

D J Kadrmas1, E V R Di Bella, H S Khare

  • 1Medical Imaging Research Laboratory, Department of Radiology, 729 Arapeen Dr., Salt Lake City, UT 84108-1218.

IEEE Transactions on Nuclear Science
|September 28, 2011
PubMed
Summary

Dynamic myocardial perfusion SPECT using Tc-99m-teboroxime offers superior accuracy in measuring heart blood flow compared to static imaging. This advanced technique utilizes compartmental modeling for better results.

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SPECT Imaging of Teboroxime during Myocardial Blood Flow Changes.

IEEE transactions on nuclear science·2011

Area of Science:

  • Nuclear Medicine
  • Cardiovascular Imaging
  • Radiopharmacology

Background:

  • Technetium-99m-teboroxime (Tc-99m-teboroxime) is a myocardial perfusion tracer with rapid kinetics.
  • Fast tracer kinetics present challenges for static imaging but are advantageous for dynamic imaging protocols.

Purpose of the Study:

  • To compare the accuracy of static versus dynamic myocardial perfusion single-photon emission computed tomography (SPECT) using Tc-99m-teboroxime.
  • To evaluate the correlation of imaging parameters with gold-standard microsphere-derived flow values in canines.

Main Methods:

  • Dynamic and static myocardial perfusion SPECT were performed in canines under rest and adenosine stress conditions.
  • Data were analyzed using summed static images and 4D reconstruction with kinetic parameter estimation (two-compartment model).

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  • Imaging data (voxel intensity, washin rate) were correlated with microsphere-measured myocardial blood flow.

    • Main Results:

    • Dynamic imaging with Tc-99m-teboroxime successfully acquired data at rest and during stress.
    • The washin rate parameter from dynamic imaging showed a significantly better correlation with myocardial blood flow than static image intensity (p<0.01).
    • Summing projection data from 60 to 180 seconds post-injection yielded the best static imaging correlation.

    Conclusions:

    • Dynamic myocardial perfusion SPECT with Tc-99m-teboroxime and compartmental modeling provides a more accurate assessment of myocardial blood flow than static imaging.
    • The fast kinetics of Tc-99m-teboroxime are well-suited for dynamic imaging protocols, enhancing diagnostic capabilities.