Fig. 4

Differences on PCAT attenuation between optical coherence tomography plaque. (A). PCAT attenuation was significantly higher in patients with lipid plaque (+) than in those with lipid plaque (-). (B). PCAT attenuation was significantly higher in patients with Macrophages (+) than in those with Macrophages (-). (C). PCAT attenuation was significantly higher in patients with TCFA (+) than in those with TCFA (-). (D). PCAT attenuation showed no statistically significant difference between the two groups regarding red thrombus; however, there was an observable trend towards an increase in the incidence of red thrombus in the high attenuation group. Student’s t-test was applied to obtain P values. PCAT = peri-coronary adipose tissue, TCFA = thin-cap fibroatheroma.