公开(公告)号：US20240215844A1

公开(公告)日：2024-07-04

申请号：US18394059

申请日：2023-12-22

Applicant: LightLab Imaging, Inc.

Inventor： Wei C. Chiu ,  Amir Dolaty

IPC: A61B5/026 ,  A61B5/021 ,  A61B5/0215

CPC classification number: A61B5/026 ,  A61B5/02125 ,  A61B5/0215 ,  A61B2562/0247

Abstract: The present disclosure provides systems and methods for determining a mean transit time of blood within a blood vessel using pressure measurements collected by an intravascular tool and not dependent on temperature measurements. The intravascular instrument may collect a plurality of pressure measurements distal to an area of interest within the blood vessel as a bolus passes through the blood vessel and over the instrument. The plurality of pressure measurements may be plotted on a pressure dilution curve. A function of the pressure dilution curve and time is used to determine the mean transit time of the blood within the blood vessel.