Assessment of cardiac function using multidetector row computed tomography

Area of Science:

• Cardiovascular Imaging
• Radiology
• Medical Diagnostics

Background:

• Accurate cardiac function assessment is vital for diagnosing and managing heart disease.
• Multi-detector row computed tomography (MDCT) is increasingly used for coronary artery disease diagnosis.
• MDCT's role in cardiac function evaluation is evolving with technological advancements.

Purpose of the Study:

• To evaluate the utility of MDCT for assessing cardiac function in patients with suspected heart disease.
• To compare MDCT's cardiac function assessment with established imaging modalities.
• To determine the clinical value of MDCT for cardiac function when combined with coronary angiography.

Main Methods:

• Utilized retrospective electrocardiographic gating for cardiac cycle phase reconstruction.
• Acquired data for both coronary angiography and cardiac function analysis from the same scan.
• Compared MDCT-derived ejection fraction and ventricular volumes with echocardiography, cineventriculography, SPECT, and MRI.

Main Results:

• MDCT demonstrates good agreement with echocardiography, cineventriculography, SPECT, and MRI for cardiac function assessment.
• Despite lower temporal resolution than electron beam CT, MDCT accurately preserves ejection fraction.
• The same MDCT data used for coronary angiography can be leveraged for cardiac function evaluation.

Conclusions:

• MDCT is a suitable approach for evaluating cardiac function alongside coronary artery imaging in patients with suspected coronary artery disease.
• MDCT provides valuable additional clinical information for cardiac workup without requiring a separate scan.
• Referring patients solely for MDCT-based function assessment is not currently warranted due to radiation dose and contrast requirements.