Objective  To study the value of coronary computed tomography angiography (CTA) in quantitative assessment and prognosis assessment of plaque in patients with coronary heart disease.

  Methods  The clinical data of 60 patients with suspected coronary artery disease were collected. According to the results of coronary arteriography(CAG), the diagnostic accuracy of stenosis degree by Computed Tomography Angiography(CTA) was compared and evaluated, and the diagnostic efficacy of CTA was evaluated taking CAG as golden standard.

  Results  There were no significant difference in the pathological indicators of mild, moderate and severe patients detected by CTA compared with the results of CGA (P>0.05). The sensitivity of CTA in the diagnosis of mild, moderate and severe stenosis were 73.69%, 80.42%, 87.77%, and specificity were 95.63%, 96.82% and 97.14%, respectively. The calcification scores, plaque load, stenosis degree and reconstruction index of myocardial ischemia group were significantly better than those of non-myocardial ischemia group (P < 0.05). There was no significant difference in the volume of calcium plaque between myocardial ischemia group and non-myocardial ischemia group (P>0.05).

  Conclusion  CTA for coronary artery is of great value in the quantitative assessment of plaque and prognosis in patients with coronary heart disease.