An anthropomorphic beating heart phantom for cardiac x-ray CT imaging evaluation

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Cardiovascular Technology

Background:

• Cardiac X-ray computed tomography (CT) technology is rapidly advancing.
• Accurate assessment of new cardiac CT technologies requires sophisticated phantoms.
• Existing phantoms may not fully replicate the dynamic and pathological complexities of the human heart.

Purpose of the Study:

• To describe the development and utility of an anthropomorphic beating heart phantom.
• To provide a tool for assessing technological improvements in cardiac X-ray CT.
• To enable evaluation of imaging parameters and pathological conditions in cardiac CT.

Main Methods:

• Construction of an anthropomorphic phantom including thorax, compressor, and ECG systems.
• Integration of a beating heart model with realistic coronary arteries.
• Inclusion of modular components for simulating pathologies like aberrant beats, stents, and plaques.

Main Results:

• The phantom successfully demonstrated its utility in initial trials.
• It was effective in assessing key cardiac CT performance metrics.
• The phantom allowed for the evaluation of imaging specific to coronary stents and atherosclerotic plaques.

Conclusions:

• The anthropomorphic beating heart phantom is a valuable tool for cardiac CT research.
• It facilitates the assessment of temporal and spatial resolution, radiation dose, and contrast enhancement.
• The phantom's design supports the evaluation of interventions like stent placement and disease states like plaques.