Pulse Medical Imgaing Technology (Shanghai) Co;Ltd
发明人:
Shengxian TU,Miao CHU,Bo XU,Bing LIU,Yazhu CHEN
申请号：
US15779704
公开号：
US20180353241A1
申请日:
2016.11.04
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A system for estimating post-virtual stenting fractional flow reserve (FFR) capable of: receiving geometrical parameters of a blood vessel segment, the geometrical parameters comprising first, second and third geometrical parameters； with a proximal end as a reference point, deriving a reference lumen diameter function and calculating a pre-virtual stenting percent diameter stenosis based on the above geometrical parameters and the distance from position along the segment to the reference point； receiving a virtual stenting location； calculating a geometrical parameter of a virtual lumen of the post virtually-stented segment, deriving a post-virtual stenting geometrical parameter difference function and calculating a percent diameter stenosis based on the third geometrical parameter, the virtual stenting location and the reference lumen diameter function； taking derivative difference functions of the post-virtual stenting geometrical parameter difference function in multiple scales； and obtaining FFR based on the multiple scales of derivative difference functions and a maximum post-virtual stenting mean blood flow velocity. Post-virtual stenting FFR is estimated based on changes in percent diameter stenosis and the maximum mean blood flow velocity after virtual stent implantation using a multi-scale calculation method.
