Application value of virtual histology intravascular ultrasound in patients with mild or moderate coronary artery lesion

Objective To investigate the application value of virtual histology intravascular ultrasound(IVUS) in patients with mild or moderate coronary artery lesion. Methods 80 patients with mild or moderate coronary artery lesion diagnosed by coronary angiography(CAG) were selected,all were taken with IVUS.The vascular cavity diameter,diameter of the stenosis rate and length of patch of the narrowest point lesion blood vessel measured by CAG and IVUS was compared;The diagnosis of different stenosis rate of the same lesions was compared;the test results of patch length and traits was compared. Results The vascular cavity diameter measured by CAG was longer than that measured by IVUS,diameter of the stenosis rate was lower than that measured by IVUS,length of patch was shorter than that measured by IVUS,the difference was significant(P0.05).The diagnostic rate of lesions more than 60% measured by CAG was higher than that measured by IVUS(P0.05).IVUS found more plaques than CAG(P0.05). Conclusion The CAG underestimates the intravascular lesion of coronary artery.IVUS can be an effective complement to CAG.