PC MRI法测量主、肺动脉的血流量准确性的研究

Objective: In order to evaluate the accuracy and repeatability of PC MRI in measuring the blood flow volume of aorta and main pulmonary artery. Method: In order to find out the accuracy of blood flow volume of aorta and main pulmonary artery by using PC MR,31 cases of healthy volunteer's blood flow in the beginning of aorta and pulmonary artery were measured by using PC MRI, we analyzed and compared the values of blood flow volume within the cardiac cycle. In order to find out the repeatability of blood flow volume of aorta and main pulmonary artery by using PC MR, 9 cases of healthy volunteers' blood flow in the beginning of aorta and pulmonary artery were measured by using PC MRI in twice times, we analyzed and compared the value of blood flow volume within the cardiac cycle. Results: There have good consistency between blood flow volume of aorta with pulmonary artery（r=0.94）. There have good consistency in twice times measurements of blood flow volume of aorta and pulmonary artery（raorta =0.91，rpulmonary artery =0.92）. Conclusion: PC MRI is a noninvasive, safe, accurate and informative method, and it is not affected by air and bone. It is a good way in research of the hemodynamics of aorta and pulmonary artery.