Qi Song,Ying Xuan Zhi,Yuwei Li,Youbing Yin,Shubao Liu,Bin Ma
申请号：
US16576034
公开号：
US20200085396A1
申请日:
2019.09.19
申请国别(地区):
US
年份:
2020
代理人:
摘要：
Method, system, device and medium for determining a blood flow velocity in a vessel are provided. An example method includes receiving a 3D model of the vessel, which is reconstructed based on X-ray angiography images of the vessel. The method further includes specifying a segment of the 3D model by a start landmark and a termination landmark. Moreover, the method includes determining the blood flow velocity based on length of the segment and perfusion time for the segment by normalizing the blood flow velocity to correspond to a cardiac cycle. The method has a better accuracy in calculating blood flow velocity, and requires no additional modalities other than the original X-ray angiogram sequences used to visualize coronary arteries.
