CT myocardial perfusion and FFR-CT for the assessment of coronary artery disease

Area of Science:

• Cardiovascular Imaging
• Radiology
• Medical Diagnostics

Background:

• Coronary artery disease (CAD) diagnosis relies heavily on non-invasive imaging.
• CT coronary angiography (CTCA) is a primary tool for CAD detection but has limitations in specificity.
• Functional assessment of coronary stenosis is crucial when CTCA findings are indeterminate.

Purpose of the Study:

• To evaluate the added value of CT myocardial perfusion imaging (CTP) and CT fractional flow reserve (CT-FFR) in conjunction with CTCA.
• To determine if these complementary techniques enhance diagnostic accuracy and prognostic capabilities.
• To assess the impact of these advanced CT methods on therapeutic decision-making for patients with suspected CAD.

Main Methods:

• Utilizing CT coronary angiography as the initial non-invasive imaging modality.
• Performing complementary CT myocardial perfusion imaging and/or CT fractional flow reserve for select patients with indeterminate CTCA results.
• Analyzing the diagnostic accuracy and prognostic implications of combined CTCA with advanced CT techniques.

Main Results:

• CTCA demonstrates high reliability for excluding CAD but often requires further functional assessment due to suboptimal specificity.
• CT myocardial perfusion imaging and CT fractional flow reserve significantly augment the diagnostic power of CTCA.
• These advanced CT techniques improve the ability to predict myocardial ischemia and guide treatment strategies.

Conclusions:

• CT myocardial perfusion imaging and CT fractional flow reserve are valuable adjuncts to CT coronary angiography.
• Integrating these methods enhances the assessment of coronary stenosis with uncertain functional significance.
• These techniques improve therapeutic decision-making and patient management in suspected coronary artery disease.