公开(公告)号：US20240087147A1

公开(公告)日：2024-03-14

申请号：US18466677

申请日：2023-09-13

Applicant: Boston Scientific Scimed Inc.

Inventor： Judith Tiferes Wang ,  Brandon Zingsheim ,  Andrew Oveson ,  Wenguang Li ,  Qian Li

IPC: G06T7/38 ,  A61B6/00 ,  A61B6/12 ,  A61B8/00 ,  A61B8/08 ,  A61B8/12 ,  A61B34/20

CPC classification number: G06T7/38 ,  A61B6/12 ,  A61B6/504 ,  A61B6/5247 ,  A61B8/12 ,  A61B8/467 ,  A61B8/5261 ,  A61B34/20 ,  A61B2034/2063 ,  G06T2207/10116 ,  G06T2207/10132 ,  G06T2207/30101

Abstract: The present disclosure provides to co-register an external image of a vessel to IVUS images captured within the vessel and provides graphical user interfaces to facilitate modification to the co-registration. Notably, the present disclosure provides for the co-registration even when the IVUS images are captured before the external image or before co-registration is initiated with the external image.

公开(公告)号：US11311196B2

公开(公告)日：2022-04-26

申请号：US16283235

申请日：2019-02-22

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： Wenguang Li ,  Qian Li ,  Justin Michael Lerman ,  David Burgess

IPC: A61B5/02 ,  A61B5/021 ,  A61B5/00 ,  A61B5/0215 ,  A61B5/026 ,  A61B5/107

Abstract: A method, device, and system for evaluating a vessel of a patient, and in particular the hemodynamic impact of a stenosis within the vessel of a patient. Proximal and distal pressure measurements are made using first and second instrument while the first instrument is moved longitudinally through the vessel from a first position to a second position and the second instrument remains in a fixed longitudinal position within the vessel. A series of pressure ratio values are calculated, and a pressure ratio curve is generated. One or more stepped change in the pressure ratio curve are then identified and/or located using an Automatic Step Detection (ASD) process and/or algorithm. The ASD includes identifying a general position of a starting point of the stepped change by identifying a change in the pressure ratio values within a first window along the pressure ratio curve that is at or above a first threshold change value, and identifying an optimized position of the starting point by identifying a change in the pressure ratio values within a second window along the pressure ratio curve that is at or above a second threshold change value, wherein the second window is smaller than the first window, and the second threshold change value is smaller than the first threshold change value.

公开(公告)号：US20240428429A1

公开(公告)日：2024-12-26

申请号：US18667561

申请日：2024-05-17

Applicant: Boston Scientific Scimed Inc.

Inventor： Qian Li ,  Hatice Cinar Akakin ,  Alexander Shang ,  Wenguang Li

IPC: G06T7/33 ,  G06T7/73 ,  G06V10/82

Abstract: The present disclosure provides devices and methods to identify locations of side branches in a series of intravascular images (e.g., a pre-treatment IVUS pullback, a post-treatment IVUS pullback, or the like) to assist with co-registering the IVUS images with an extravascular image (e.g., angiogram, or the like) or with another set of IVUS images. The present disclosure further provides devices and methods for training a machine learning (ML) model to infer side branch locations from IVUS images and an analytic algorithm for extracting frames from the IVUS images representing side branches.