mean diastolic
5.Methods Coronary peak disatolic flow velocity(PDV),mean diastolic flow velocity(MDV)and diastolic flow velocity integral(DVI) of left main coronary were measured by multipe planes trans_esophageal echocardiogram before and after imtravenous injection of dipyridamole in group of hypertension with myocardial strain,group of hypertension without myocardial strain and normal group. The ratio of dipyridamole to rest velocity(D/R) was calculated.
6.Transesophageal Doppler echocardiography(TEE)was used to detect mean diastolic flow rate(Vcor),coronary vascular resistance(Rcor)and coronary vascular reserve(CVR)in the left anterior descending9(LAD)coronary artery before and after dipyridamole infusion in 30 patients undergoing coronary angiography.
9.The results showed that as the ICP went up,the time av-eraged mean (TAM) and the end--diastolic velocity (Vd) decreased and the pulsatility index (PI) in-creased.

