Objective:To compare diagnostic effect between coronary CT angiography (CTA) and intravascular ultra-sound (IVUS) for coronary calcified lesion .Methods:A total of 50 patients ,who were diagnosed as coronary heart disease (CHD) or suspected CHD in our hospital ,were selected .All patients received coronary CTA and IVUS ex-amination .Characteristics of coronary artery plaques and CT values of different types of plaques were observed , coronary CTA diagnostic effect was evaluated according IVUS as control .Results:There were no significant differ-ence between two methods in plaque area ,plaque burden and lumen area;CT value of calcified plaques was signifi-cantly higher than those of fibrous plaques and fatty plaques [ (725.68 ± 68.42) Hu vs .(58.12 ± 7.05) Hu ,(60.21 ± 6.78) Hu ,P<0.01 both];Sensitivity ,specificity ,accuracy ,positive predictive value and negative predictive val-ue of coronary CTA for diagnosing calcified plaques were 92. 86% ,92. 86% ,92. 86% ,81. 25% and 97. 50% respec-tively .Conclusion:Coronary CT angiography possesses higher diagnostic effect for qualitative and quantitative de-tection of coronary calcified lesions ,which can be regarded as a preferred screening method .

Objective To study and analyze the curative effect on acute myocardial infarction patients combined car-diac shock by percutaneous coronary intervention. Methods All 70 cases acute myocardial infarction patients combined cardiac shock treated from January 2011 to June 2013 were chosen as the research objects. They were divided into the experiment group and the control group,35 cases in each group. The experiment group patients were treated by percu-taneous coronary intervention, the control group patients were treated by drugs. The average length of hospital stay,blood vessels reperfusion rate, cardiac function recovery and case fatality rate of two groups were compared. Results After the treatment,the average hospitalization time and mortality rate of the experimental group were significantly less than that of the control group (P<0.05), and the patency rate and heart function of the experiment group was signifi-cantly higher than that of control group(P<0.05). Conclusion The curative effect on percutaneous coronary intervention for acute myocardial infarction complicated with cardiogenic shock is sure,it is better than that treated by drugs, the mortality rate is low,safe and effective,it can be used as the treatment of choice.