If prior to the IFR/FFR pullback on the intrasight system, FFR measurement(s) were performed within the same syncvision procedural session, the co-registered distal value will be different than the distal value displayed in the philips IFR/FFR system. This error will appear "insufficient data, distal segment is not co-registered" the risk of suboptimal patient treatment due to falsely elevated data on the initial trendline for the IFR/FFR co-registration would be greatest from inexperienced interventionalists. Recall start date: Dec 10, 2021