Systems and methods for assessing organ and/or tissue transplantation by simulating one or more transplant characteristics

Patent metadata

Field	Value
Publication number	US-11918293-B2
Application number	US-202017106987-A
Country	US
Kind code	B2
Filing date	Nov 30, 2020
Priority date	Nov 23, 2015
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

Systems and methods are disclosed for assessing organ and/or tissue transplantation by estimating blood flow through a virtual transplant model by receiving a patient-specific anatomical model of the intended transplant recipient; receiving a patient-specific anatomical model of the intended transplant donor, the model including the vasculature of the organ or tissue that is intended to be transplanted to the recipient; constructing a unified model of the connected system post transplantation, the connected system including the transplanted organ or tissue from the intended transplant donor and the vascular system of the intended transplant recipient; receiving one or more blood flow characteristics of the connected system; assessing the suitability for an actual organ or tissue transplantation using the received blood flow characteristics; and outputting the assessment into an electronic storage medium or display.

First claim

What is claimed is:

1. A computer implemented method for assessing organ or tissue transplantation, the method comprising:
receiving one or more pre-transplantation medical images of a transplant recipient;
identifying voxels of the one or more pre-transplantation medical images of the transplant recipient that belong to a vasculature of the transplant recipient that provides circulation to a recipient organ or a recipient tissue intended to be replaced during a transplant;
constructing a patient-specific recipient anatomical model of the transplant recipient based on the identified voxels of the vasculature of the transplant recipient;
receiving one or more pre-transplantation medical images of a donor organ or a donor tissue of a transplant donor;
identifying voxels of the one or more pre-transplantation medical images of the transplant donor that belong to a vasculature of the transplant donor that provides circulation to the donor organ or the donor tissue intended to be replaced during the transplant;
constructing a patient-specific recipient anatomical model of the transplant donor based on the identified voxels of the vasculature of the transplant donor;
estimating blood flow through the patient-specific-recipient anatomical model of the transplant recipient to compute one or more blood flow characteristics of the transplant recipient;
automatically determining one or more connections between the recipient organ or the recipient tissue intended to be replaced during the transplant and the vasculature of the transplant recipient;
using the one or more connections, updating the patient-specific recipient anatomical model of the transplant recipient to construct a patient-specific virtual transplant model;
receiving one or more follow-up medical images of the transplant recipient during a transplantation procedure;
during the transplantation procedure, automatically segmenting the one or more follow-up medical images and extracting anatomical characteristics from the one or more follow-up medical images;
in real time, during the transplantation procedure, updating the patient-specific virtual transplant model based on the automatic segmenting of the one or more follow-up medical images and the extracting of the anatomical characteristics from the one or more follow-up medical images;
estimating an updated blood flow through the updated patient-specific virtual transplant model;
evaluating a risk of an insufficient blood flow to the donor tissue or the donor organ transplanted during the transplantation procedure using the updated patient-specific virtual transplant model; and
outputting the evaluation into an electronic storage medium or display.

2. The computer implemented method of claim 1 , further comprising:
determining one or more pre-transplantation blood flow characteristics using the patient-specific recipient anatomical model of the transplant recipient; and
evaluating a planned transplantation using a comparison of the computed one or more blood flow characteristics of the transplant recipient and the determined one or more pre-transplantation blood flow characteristics of the transplant recipient.

3. The computer implemented method of claim 1 , wherein the updated patient-specific recipient virtual transplant model includes vasculature of the transplant recipient that will supply blood to the donor tissue or the donor organ transplanted during the transplantation procedure.

4. The computer implemented method of claim 1 , further comprising:
computing one or more functional characteristics of the recipient organ or the recipient tissue intended to be replaced; and
evaluating a planned transplantation using the computed one or more blood flow characteristics and the one or more functional characteristics.

5. The computer implemented method of claim 1 , wherein the risk of insufficient blood flow includes an existence of at least one large vessel insufficiency for supplying blood to the donor tissue or the donor organ transplanted during the transplantation procedure.

6. The computer implemented method of claim 1 , wherein the risk of insufficient blood flow further includes a risk of a failure of the donor tissue or the donor organ transplanted during the transplantation procedure.

7. The computer implemented method of claim 1 , wherein evaluating the risk of insufficient blood flow further comprises: determining a functional status of the donor tissue or the donor organ transplanted during the transplantation procedure.

8. The computer implemented method of claim 1 , wherein evaluating the risk of insufficient blood flow to the donor tissue or the donor organ transplanted during the transplantation procedure includes receiving one or more blood flow characteristics of the vasculature of the intended transplant donor, wherein the donor tissue or the donor organ transplanted during the transplantation procedure originates with the transplant donor.

9. A system for assessing organ or tissue transplantation, the system comprising:
at least one data storage device storing instructions for assessing organ or tissue transplantation; and
at least one processor configured to execute the instructions to perform operations comprising:
receiving one or more pre-transplantation medical images of a transplant recipient;
identifying voxels of the one or more pre-transplantation medical images of the transplant recipient that belong to a vasculature of the transplant recipient that provides circulation to a recipient organ or a recipient tissue intended to be replaced during a transplant;
constructing a patient-specific recipient anatomical model of the transplant recipient based on the identified voxels of the vasculature of the transplant recipient;
receiving one or more pre-transplantation medical images of a donor organ or a donor tissue of a transplant donor;
identifying voxels of the one or more pre-transplantation medical images of the transplant donor that belong to a vasculature of the transplant donor that provides circulation to the donor organ or the donor tissue intended to be replaced during the transplant;
constructing a patient-specific recipient anatomical model of the transplant donor based on the identified voxels of the vasculature of the transplant donor;
estimating blood flow through the patient-specific-recipient anatomical model of the transplant recipient to compute one or more blood flow characteristics of the transplant recipient;
automatically determining one or more connections between the recipient organ or the recipient tissue intended to be replaced during the transplant and the vasculature of the transplant recipient;
using the one or more connections, updating the patient-specific recipient anatomical model of the transplant recipient to construct a patient-specific virtual transplant model;
receiving one or more follow-up medical images of the transplant recipient during a transplantation procedure;
during the transplantation procedure, automatically segmenting the one or more follow-up medical images and extracting anatomical characteristics from the one or more follow-up medical images;
in real time, during the transplantation procedure, updating the patient-specific virtual transplant model based on the automatic segmenting of the one or more follow-up medical images and the extracting of the anatomical characteristics from the one or more follow-up medical images;
estimating an updated blood flow through the updated patient-specific virtual transplant model;
evaluating a risk of an insufficient blood flow to the donor tissue or the donor organ transplanted during the transplantation procedure using the updated patient-specific virtual transplant model; and
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Assignees

• Heartflow Inc

Inventors

• Grady Leo
• Taylor Charles A
• Zarins Christopher

Classifications

• A61B34/10 Primary

  Computer-aided planning, simulation or modelling of surgical operations · CPC title

• A61B5/0263

  using NMR · CPC title

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61B6/503

  for diagnosis of the heart · CPC title

• A61B6/504

  for diagnosis of blood vessels, e.g. by angiography · CPC title