A cardiac phantom and pulsatile flow pump for magnetic resonance imaging studies

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Cardiovascular Research

Background:

• Fast scan magnetic resonance imaging (MRI) is crucial for noninvasive cardiovascular evaluation.
• Interpreting MRI images of flowing blood can be challenging due to variability.
• A realistic cardiovascular phantom is needed to improve MRI interpretation and research.

Purpose of the Study:

• To describe an MRI-compatible cardiovascular phantom.
• To demonstrate its ability to mimic cardiac motion and physiologic pulsatile flow.
• To highlight its utility in validating MRI techniques and correlating with other cardiovascular assessment methods.

Main Methods:

• Development of an MRI-compatible phantom with a ventricle and an external air pump.
• Utilizing an air hose to position the pump outside the magnetic field.
• Employing a pressurized cylinder to drive fluid, simulating cardiac function and flow.

Main Results:

• The phantom successfully mimics the motions of the beating heart.
• It generates pulsatile flow with physiologic velocities and volumes.
• The phantom is compatible with MRI and can be used for various cardiovascular function studies.

Conclusions:

• The developed phantom is a valuable tool for improving the interpretation of cardiovascular MRI.
• It facilitates research into cardiac function, including ejection fractions, cardiac output, and valve studies.
• The phantom enables correlation between MRI findings and other cardiovascular imaging modalities.