Effects Of Revolution CT On Coronary Artery Morphology And Myocardial Perfusion In Healthy People At Different Altitudes

Objective: Objective: to analyze the diameter of left and right coronary artery and the changes of myocardial perfusion in middle and high altitude healthy people by Revolution CT one-stop coronary artery and myocardial perfusion imaging.To study the effect of altitude change on coronary artery and myocardial perfusion.Methods: A total of 31 volunteers with or without primary and secondary cardiovascular and cerebrovascular diseases were collected in our hospital during the period from June to January 2017.06-2018.There were 18 volunteers(1500-2500m)in middle altitude,13 cases(2500-4500m)in high altitude.The coronary tomography computed angiography coronary tomography myocardial perfusion imaging ctca ct-mpii examination was performed by ct coronary angiography.A one-stop coronary artery and myocardial perfusion imaging was performed with ge revolution 512 layer CT.The contrast medium measurement and injection rate were calculated according to the height and weight of the volunteers.To obtain the original images of coronary artery and myocardial perfusion,The diameter of left main coronary artery and right main coronary artery were obtained by coronary artery analysis software on ge4.6 postprocessing workstation,and 16 segments of left ventricular myocardium were obtained by perfusion software according to American American heart association.The blood flow volume and volume of blood were measured,and the mean transfer time was measured.Results:(1)The difference of LM and RCA between middle and high altitude healthy people was statistically significant(t=-6.987,P=0.000;t=-3.059,P=0.005);(2)There was no significant difference in bf value,bv value and BV value of left ventricular segment s1-s16 between middle and high altitude healthy people(p > 0.05),However,with the increase of altitude,mbvvt showed an increasing trend.Conclusion:(1)The change of altitude had an effect on the diameter of coronary artery,and the diameter of coronary artery increased with the increase of altitude.(2)The change of altitude had no significant effect on myocardial perfusion.