Systems and methods for identifying vascular borders

摘要

A method comprises gathering intravascular photoacoustic (IVPA) data using a transducer inserted into a vessel of a patient. The method further includes modulating the IVPA data to determine a first tissue border and displaying a border map representing the first tissue border.

主权项

1. A system comprising:
a catheter including an elongated flexible body having a lumen extending along its length from a proximal portion to a distal portion and a transducer positioned adjacent the distal portion, the transducer configured to gather intravascular photoacoustic (IVPA) data and intravascular ultrasound (IVUS) data; a computer operable to:
receive IVPA data and IVUS data obtained by the transducer while the catheter is positioned within a vessel of a patient;process the IVPA data to generate an IVPA imamprocess the IVUS data to generate an IVUS image;coregister the IVPA and IVUS images to prepare a combined image;process the IVPA data to determine a first tissue border of a vessel and prepare a border map based on the IVPA data, wherein the border map is distinguishable from the IVUS image and the IVPA image, and wherein the border map comprises a loop graphically accentuating the first tissue border; andoutput the combined image and the border map based on the IVPA data to a display in communication with the computer.