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Author Spotlight: Innovative Technique for Coronary Angiography in Marginal Donors
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Author Spotlight: Innovative Technique for Coronary Angiography in Marginal Donors

Published on: July 12, 2024

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Quantification of vessel-specific coronary perfusion territories using minimum-cost path assignment and computed

Shant Malkasian1, Logan Hubbard1, Brian Dertli1

  • 1Department of Radiological Sciences, University of California Irvine, Irvine, CA, 92697, USA.

Journal of Cardiovascular Computed Tomography
|July 26, 2018
PubMed

Insights

A new automated minimum-cost path assignment (MCP) technique accurately maps coronary artery disease (CAD) perfusion territories in swine. This CT angiography method precisely assigns left and right coronary artery territories for both ventricles.

Area of Science:

  • Cardiovascular Imaging
  • Medical Physics
  • Radiology

Background:

  • Accurate assessment of coronary artery disease (CAD) requires combined morphological and physiological evaluation.
  • Current methods may lack precision in defining specific coronary artery perfusion territories.
  • Automated techniques are needed to improve the accuracy and efficiency of CAD assessment.

Purpose of the Study:

  • To validate an automated minimum-cost path assignment (MCP) technique for precise, vessel-specific assignment of left (LCA) and right (RCA) coronary perfusion territories.
  • To assess the accuracy of the MCP technique using computed tomography (CT) angiography data in both left and right ventricles.
  • To establish a reliable method for resolving CAD severity through accurate perfusion territory mapping.

Main Methods:

  • The MCP technique was validated in a swine model (n=6).
  • Dynamic CT angiography acquisitions were performed following contrast material injection.
  • MCP-derived perfusion territories were quantitatively compared against reference standards derived from myocardial blush.

Main Results:

  • The MCP technique demonstrated high correlation with reference standards in both ventricles.
  • Left ventricle: MassMCP = 0.99MassRS + 0.35 g (r=1.00).
  • Right ventricle: MassMCP = 0.94MassRS + 0.39 g (r=0.96).

Conclusions:

  • The automated MCP technique is validated in a swine model for accurate coronary perfusion territory assignment.
  • This method shows potential for precise, vessel-specific mapping of LCA and RCA territories in myocardial CT angiography.
  • The MCP technique offers a reliable tool for assessing CAD severity by defining ventricular perfusion regions.
Abstract

Keywords:
AngiographyCardiovascular diseaseComputerized tomographyCoronary artery diseaseImagingMyocardium

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