title: [Diagnostic value of 128-slice CT coronary angiography in comparison with invasive coronary angiography].
abstract: OBJECTIVE
  To observe the diagnostic value of non-invasive 128-slice computed tomography coronary angiography (CTA) in comparison with invasive coronary angiography.
  
  
  METHODS
  128-slice CTA and invasive coronary angiography were performed in 78 unselected consecutive patients (63 patients with suspected coronary artery disease and 15 patients with previous coronary stenting, 56 males, mean age 61 +/- 10 years) and > 50% reduction of minimal lumen diameter was defined as significant coronary stenosis.
  
  
  RESULTS
  Fifty-eight out of 879 segments (7%) from CTA were not assessable because of irregular rhythm, vessel calcification or tachycardia. Compared with invasive coronary angiography, segment-based analysis from the 821 segments showed the sensitivity by CTA was 87%, specificity 97%, PPV 83% and NPV 97%. Four out of 22 stents implanted in 15 patients were not assessable by CTA because of poor image quality. Compared with invasive coronary angiography, the sensitivity of diagnosing in-stent restenosis by CTA was 100%, specificity 77%, PPV 63% and NPV 100% for the remaining 18 stents.
  
  
  CONCLUSIONS
  One hundred and twenty-eight-slice CTA has a high accuracy for detecting coronary artery disease and in-stent restenosis after coronary stenting and could be considered as a valuable noninvasive technique for screening coronary artery disease in suspected patients.
authors.affiliation: Department of Cardiology, Beijing Electric Power Hospital, Beijing 100073, China.
authors.forename: Bu-Xing
authors.initials: BX
authors.lastname: Chen
authors.forename: Feng-Yun
authors.initials: FY
authors.lastname: Ma
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Wen
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.forename: Xi-Zhe
authors.initials: XZ
authors.lastname: Zhao
authors.forename: Feng
authors.initials: F
authors.lastname: Kang
authors.forename: Quan-Hong
authors.initials: QH
authors.lastname: Zhou
authors.forename: Jian-Hong
authors.initials: JH
authors.lastname: Ruan
mesh_terms: D000328:Adult; D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000175:diagnosis / Q000000981:diagnostic imaging*; D023921:Coronary Stenosis / Q000175:diagnosis / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D036542:Tomography, Spiral Computed / Q000379:methods*