Computed tomography assessment of myocardial perfusion, viability, and function

Area of Science:

• Radiology
• Cardiovascular Imaging
• Medical Physics

Background:

• Contrast-enhanced multidetector spiral computed tomography (CE-MDCT) assesses coronary arteries and myocardial perfusion.
• Myocardial infarction (MI) is characterized by perfusion defects (early defects, residual defects, late enhancement) on CE-MDCT.
• The clinical significance of these enhancement patterns requires further elucidation.

Purpose of the Study:

• To review myocardial viability and function using CE-MDCT, incorporating data from single-slice CT (CE-SSCT).
• To present and analyze myocardial enhancement patterns observed on MDCT images.
• To correlate enhancement patterns with wall thickness, wall motion, and functional recovery.

Main Methods:

• Review of prior data including CE-SSCT and CE-MDCT.
• Presentation of images acquired by MDCT.
• Focus on dual-phase contrast CT protocols and classification of enhancement patterns.

Main Results:

• Comparison of early perfusion defects with wall thickness and wall motion.
• Correlation of enhancement patterns on dual-phase CE-MDCT with left ventricular functional recovery.
• Evaluation of enhancement pattern changes during the healing stage of MI.

Conclusions:

• CE-MDCT provides valuable insights into myocardial perfusion and viability.
• Understanding enhancement patterns (EDs, RDs, LE) is crucial for assessing myocardial infarction.
• Further research is needed to fully define the clinical implications and limitations of CE-MDCT in MI assessment.