Pericoronary adipose tissue attenuation was positively associated with non-calcified plaque burden (β = 7.0) and negatively correlated with calcified plaque burden (β = -3.5) (p<0.05).
Observational (n=466)
Is pericoronary adipose tissue attenuation associated with specific plaque characteristics in patients with suspected chronic coronary syndrome?
Higher pericoronary adipose tissue attenuation is associated with non-calcified plaque burden, suggesting a link between perivascular inflammation and vulnerable plaque characteristics.
Effect estimate: β = 7.0 for non-calcified plaque burden, β = -3.5 for calcified plaque burden
p-value: p=<0.05
Pericoronary adipose tissue attenuation (PCATa), observed from coronary computed tomography angiography (CCTA), is emerging as an inflammation marker. This study evaluated the relationship between PCATa and plaque characteristics, including plaque type, burden, and coronary calcification. An observational study was conducted on 466 patients with suspected chronic coronary syndrome who underwent clinically indicated CCTA. PCATa was measured along the proximal 40 mm of the coronary arteries and averaged to represent the patient’s level. Plaque type was assessed, compositional plaque volumes were measured, and plaque burdens were quantified. The coronary calcification scores (CCSs) were categorized into groups. Statistical methods included t-tests, ANOVA, and multivariate regression analysis. PCATa differed significantly between calcified (−81.7 Hounsfield units (HU)) and soft (−77.5 HU) plaques. PCATa was positively associated with total plaque burden (β = 3.6) and non-calcified plaque burden (β = 7.0), but negatively correlated with calcified plaque burden (β = −3.5), independent of clinical factors and tube voltage (p < 0.05). The effect of PCATa was stronger when plaques of a different composition were absent. No significant differences in PCATa were found among different CCS groups. PCATa increased for calcified compared to soft plaques. The non-calcified plaque burden was associated with a higher PCATa, while the calcified plaque burden was associated with a lower PCATa.
Overgaard et al. (Thu,) conducted a observational in suspected chronic coronary syndrome (n=466). Pericoronary adipose tissue attenuation (PCATa) was evaluated on plaque characteristics, including plaque type, burden, and coronary calcification (β = 7.0 for non-calcified plaque burden, β = -3.5 for calcified plaque burden, p=<0.05). Pericoronary adipose tissue attenuation was positively associated with non-calcified plaque burden (β = 7.0) and negatively correlated with calcified plaque burden (β = -3.5) (p<0.05).
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