Control Study Of GCTA And Coronary Arteriography For Coronary Heart Disease

Objective: To analyze the diagnostic value of Gemstone comp uted tomography Angioraphy(GCTA) and coronary arteriography(CAG) for pat ients with coronary heart disease(CHD).Methods: Excluding the patients with irregular heartbeat, or liver and kidney disfunction,or iodine allergy, we selected 60 patients with CHD in our hospita l between January 2015 and July 2015 for the GCTA and CAG examination,a nd the main equipment we used for coronary scanning was GCTA. We did th e breath training to all of the patients. Reconstructed the data, which was colle cted by the high precision data acquisition system and transferred to the AW4.6 station,by the ASIR reconstruction technique. The quality data was analysed by T test, and the quantity data by X2 Test. Find the consistency of the two m ethods in diagnosis of coronary stenosis by Kappa identity Test, and the differe nce(p<0.5).Results: 179 vascular stenoses in all were found in 60 CHD patients’ results.GCTA had a tight consistency with CAG(P>0.05) and a perfect sensitivity a nd specificity in diagnosis of CHD. The Kappa values of the consistency of th e two in diagnosis of the coronary I – V grade stenosis were 0.98, 0.92, 0.99,0.95, 0.93; GCTA has the highest sensitivity 99.3% in grade I, and the highe st specificity 99.3% in grade II, the highest positive predictive value 98.4% in grade V, the highest negative predictive value 99.6%,the same in grade V.Conclusion: GCTA can be a first choice for CHD screening, for it has a tight consistency with CAG in diagnosis of CHD, including that it has less traum a, good localization of the coronary artery stenosis, the quantative and the chara cterizing diagnosis of the coronary atherosclerotic plaques.