Transthoracic, harmonic mode, contrast enhanced color Doppler echocardiography in detection of restenosis after percutaneous coronary interventions. Prospective evaluation verified by coronary angiography

Transthoracic echocardiography allowed for accurate stenosis assessment of principal coronary arteries after successful PTCA. Feasibility of lesion site visualization was 100% for the LAD, 75% for the Cx and 43% for the RCA. Ultrasound contrast agent improved the quality of the RCA images.