The proximal and distal average peak velocity(APV),diastolic/systolic velocity ratio(DSVR),coronary flow reserve(CFR)and proximal/distal velocity ratio(P/DVR)were measured.

• 用CardiometricsFlomapII和0.；014英寸多普勒钢丝测量：近端及远端平均峰速（APV）、舒张期与收缩期流速比（DSVR）、血流储备（CFR）和近端与远端流速比（P/DVR）。