Pericoronary adipose tissue for predicting long-term outcomes.

Area of Science:

• Cardiology
• Radiology
• Biomedical Imaging

Background:

• Pericoronary adipose tissue (PCAT) attenuation on coronary computed tomography angiography (CCTA) is linked to coronary inflammation and patient outcomes.
• The predictive value of PCAT attenuation for long-term major adverse cardiac events (MACE) remains uncertain.

Purpose of the Study:

• To investigate whether PCAT attenuation predicts MACE in patients with suspected coronary artery disease (CAD) undergoing CCTA.
• To assess the association between PCAT attenuation and long-term cardiac events.

Main Methods:

• A cohort of 483 patients with suspected CAD who underwent CCTA were analyzed.
• PCAT attenuation was measured at coronary artery lesions using semi-automated software.
• Cox regression models assessed the predictive value of PCAT attenuation for MACE over a median follow-up of 9.5 years.

Main Results:

• Mean PCAT attenuation did not differ significantly between patients with and without MACE.
• Per-patient and per-lesion analyses showed no significant association between PCAT attenuation and MACE.
• Adjusted hazard ratios for MACE were not significant for overall, most obstructive, or highest PCAT attenuation lesions.

Conclusions:

• PCAT attenuation, as measured by CCTA, is not a significant predictor of long-term MACE in patients with clinically suspected CAD.
• These findings suggest that PCAT attenuation may not be a reliable biomarker for predicting future cardiac events in this population.