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Related Concept Videos

Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
62

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Related Experiment Video

Updated: Aug 28, 2025

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
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A Multimodality Myocardial Perfusion Phantom: Initial Quantitative Imaging Results.

Marije E Kamphuis1, Henny Kuipers2, H Remco Liefers3,4

  • 1Multimodality Medical Imaging Group, Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands.

Bioengineering (Basel, Switzerland)
|September 22, 2022
PubMed
Summary

A novel cardiac flow phantom enables accurate ground truth contrast measurements for multimodal myocardial perfusion imaging (MPI) using CT, PET/CT, and MRI. This tool aids in quantitative analysis of blood flow, crucial for diagnosing heart conditions.

Keywords:
CTMRIPETblood flowmultimodalitymyocardialperfusionphantomquantitative imaging

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Area of Science:

  • Medical Imaging
  • Cardiovascular Science
  • Biomedical Engineering

Background:

  • Accurate quantification of myocardial blood flow (MBF) is essential for diagnosing and managing cardiovascular diseases.
  • Current multimodal myocardial perfusion imaging (MPI) techniques (CT, PET/CT, MRI) require robust ground truth measurements for validation.
  • A dedicated phantom is needed to simulate physiological conditions and validate quantitative perfusion assessments.

Purpose of the Study:

  • To develop and evaluate a novel 3D-printed cardiac flow phantom for multimodal ground truth contrast measurements in dynamic MPI.
  • To assess the phantom's capability in simulating normal and deficient myocardial perfusion.
  • To validate quantitative MBF measurements across CT, PET/CT, and MRI using the developed phantom.

Main Methods:

  • A 3D-printed cardiac flow phantom mimicking the left ventricular cavity and myocardial regions was designed and constructed.
  • The phantom incorporated a flow circuit to regulate and measure contrast agent flow, simulating normal and deficient perfusion scenarios.
  • Quantitative perfusion measurements were performed using clinical hardware and software for CT, PET/CT, and MRI, with reference flow set at 4.0 L/min arterial input and 80 mL/min myocardial flow.

Main Results:

  • The phantom successfully simulated dynamic myocardial perfusion imaging processes, yielding time-intensity curves consistent with expected perfusion deficits.
  • Derived MBF values showed underestimation (0.9 mL/g/min) and overestimation (4.5 mL/g/min) of reference flow in PET/CT and CT, respectively.
  • A simulated perfusion deficit of 0.8 mL/g/min in CT resulted in a derived MBF of 2.8 mL/g/min, demonstrating the phantom's sensitivity.

Conclusions:

  • The developed multimodal cardiac flow phantom is a viable tool for establishing ground truth contrast measurements in quantitative MPI.
  • Initial quantitative perfusion measurements using the phantom with clinical hardware and software show its potential for validating imaging techniques.
  • This proof-of-concept study highlights the phantom's utility in advancing accurate and reliable assessment of myocardial perfusion across different imaging modalities.