title: [Evaluation of clinical application of intravascular ultrasound image].
abstract: OBJECTIVE
  To prospectively evaluate the clinical applications of intravascular ultrasound (IVUS).
  
  
  METHODS
  Four hundred and thirty seven patients with coronary artery disease (CAD) or suspect CAD were imaged with CAD and IVUS, including (1) assessment IVUS in 135 cases with normal coronary angiography (CAG) (2) comparison IVUS with CAG pre and after angioplasty in 52 patients with CAD (3) assessment of detecting calcification lesions with CAG and IVUS in 150 patients (4) predicting the cardiac events after stent implantation guided by IVUS (n = 47) and CAG (N = 53).
  
  
  RESULTS
  IVUS may detect coronary atherosclerosis lesions with normal by CAG. CAG overestimated effect of angioplasty. IVUS was more accurate to determine effect and complications of PTCA compared with CAG. IVUS interpreted the mechanism of vessel dilatation in PTCA. The cardiac events after stent implantation were significantly reduced after IVUS examination as compared with CAG.
  
  
  CONCLUSIONS
  IVUS represents a radically different approach to vascular anatomy. Unlike angiography, which displays the coronary artery as a silhouette of the contrast-filled lumen, IVUS generates a cross-sectional tomographic image of the lumen and vessel wall. IVUS plays an important role as a guidance in cardiac intervention.
authors.affiliation: Department of Cardiology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China. Zhuwenling@sohu.com
authors.forename: W L
authors.initials: WL
authors.lastname: Zhu
authors.forename: C L
authors.initials: CL
authors.lastname: Huang
authors.forename: D
authors.initials: D
authors.lastname: Han
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Shen
authors.forename: Y
authors.initials: Y
authors.lastname: Zeng
mesh_terms: D000328:Adult; D000368:Aged; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D018084:Ultrasonography, Interventional