1.3 Transthoracic Echocardiography
Transthoracic echocardiography examinations were performed using a Philips EPIQ CVx color Doppler ultrasound diagnostic instrument equipped with an X5-1 transducer (frequency range: 1-5 MHz) at 1 week, 6 months, and 12 months post-PCI. Both conventional echocardiography and three-dimensional ”full-volume imaging” were conducted by a physician with 10 years of experience in echocardiography.