Planning an implantation of a cardiac implant

Patent metadata

Field	Value
Publication number	US-2016128786-A1
Application number	US-201414895604-A
Country	US
Kind code	A1
Filing date	May 30, 2014
Priority date	Jun 7, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

The present invention relates to a medical imaging system ( 10 ) for planning an implantation of a cardiac implant ( 42 ), comprising: a receiving unit ( 12 ) for receiving a plurality of three-dimensional (3D) cardiac images ( 14, 14 ′) showing different conditions of a heart ( 32 ) during a cardiac cycle; a segmentation unit ( 22 ) for segmenting within the plurality of 3D cardiac images ( 14, 14 ′) a target implant region ( 38 ) and a locally adjacent region ( 40 ) that could interfere with the cardiac implant ( 42 ); a simulation unit ( 24 ) for simulating the implantation of the cardiac implant ( 42 ) within the target implant region ( 40 ) in at least two of the plurality of 3D cardiac images ( 14, 14 ′); a collision evaluation unit ( 26 ) for evaluating an overlap ( 46 ) of the simulated cardiac implant ( 42 ) with the segmented locally adjacent region ( 40 ) in at least two of the plurality of 3D cardiac images ( 14, 14 ′); and a feedback unit ( 28 ) for providing feedback information to a user concerning the evaluated overlap ( 46 ).

First claim

1 . A medical imaging system for planning an implantation of a cardiac implant, comprising:
a receiving unit for receiving a plurality of three-dimensional (3D) cardiac images showing different conditions of a heart during a cardiac cycle; a segmentation unit for segmenting within the plurality of 3D cardiac images a target implant region and a locally adjacent region that could interfere with the cardiac implant, wherein the target implant region is a part of a left ventricular outflow tract and the locally adjacent region is a part of a mitral valve; a simulation unit for simulating the implantation of the cardiac implant within the target implant region in at least two of the plurality of 3D cardiac images; a collision evaluation unit for evaluating an overlap of the simulated cardiac implant with the segmented locally adjacent region in at least two of the plurality of 3D cardiac images; and a feedback unit for providing feedback information to a user concerning the evaluated overlap.

2 . The medical imaging system according to claim 1 , wherein the simulation unit is configured to simulate the implantation of the cardiac implant within the target implant region in each of the plurality of 3D cardiac images, and wherein the collision evaluation unit PO is configured to evaluate the overlap of the simulated cardiac implant with the segmented locally adjacent region in each of the plurality of 3D cardiac images.

3 . The medical imaging system according to claim 1 , wherein the feedback unit is configured to provide feedback information to the user concerning the evaluated overlap in each of the plurality of 3D cardiac images.

4 . The medical imaging system according to claim 1 , wherein the feedback information provided by the feedback unit includes a quantified extent of the overlap and/or a location where the overlap occurs in the 3D cardiac images.

5 . The medical imaging system according to claim 1 , wherein the collision evaluation unit is further configured to determine in each of the plurality of 3D cardiac images the overlap at a plurality of different spatial locations along a longitudinal axis (z) along which the target implant region substantially extends.

6 . The medical imaging system according to claim 5 , wherein the collision evaluation unit is further configured to determine for each of the plurality of different spatial locations a maximum overlap by comparing the overlaps in the 3D cardiac images at the respective spatial locations with each other.

7 . The medical imaging system according to claim 6 , wherein the feedback unit is configured to provide a graphical representation illustrating the maximum overlaps as a function of the different spatial locations along the longitudinal axis (z).

8 . The medical imaging system according to claim 1 , wherein the simulation unit is configured to simulate the cardiac implant by means of a virtual model having an elliptical cross-section, wherein a normal to the elliptical cross-section coincides with a longitudinal axis (z) along which the target implant region substantially extends.

9 . The medical imaging system according to claim 1 , further comprising an input interface that allows a user to vary a size, a shape and/or a position of the simulated cardiac implant.

10 . The medical imaging system according to claim 1 , wherein the segmentation unit is configured to segment the target implant region and the locally adjacent region based on a model-based segmentation.

11 . The medical imaging system according to claim 1 , wherein the plurality of cardiac 3D images are 3D transesophageal echocardiography images acquired with an ultrasound imaging system.

12 . A medical imaging system for planning an implantation of a cardiac implant, comprising:
a receiving unit for receiving a plurality of three-dimensional cardiac images showing different conditions of a heart during a cardiac cycle; a segmentation unit for segmenting within the plurality of 3D cardiac images a target implant region and a locally adjacent region that could interfere with the cardiac implant, wherein the target implant region is a part of a right ventricular outflow tract and the locally adjacent region is a part of a tricuspid valve; a simulation unit for simulating the implantation of the cardiac implant within the target implant region in at least two of the plurality of 3D cardiac images; a collision evaluation unit for evaluating an overlap of the simulated cardiac implant with the segmented locally adjacent region in at least two of the plurality of 3D cardiac images; and a feedback unit for providing feedback information to a user concerning the evaluated overlap.

13 . A method for planning an implantation of a cardiac implant, comprising the steps of:
receiving a plurality of three-dimensional (3D) cardiac images showing different conditions of a heart during a cardiac cycle; segmenting within the plurality of 3D cardiac images a target implant region and a locally adjacent region that could interfere with the cardiac implant, wherein the target implant region is a part of a left ventricular outflow tract and the locally adjacent region is a part of a mitral valve; simulating the implantation of the cardiac implant within the target implant region in at least two of the plurality of 3D cardiac images; evaluating an overlap of the simulated cardiac implant with the segmented locally adjacent region in at least two of the plurality of 3D cardiac images; and providing feedback information to a user concerning the evaluated overlap.

14 . A method for planning an implantation of a cardiac implant, comprising the steps of:
receiving a plurality of three-dimensional (3D) cardiac images showing different conditions of a heart during a cardiac cycle; segmenting within the plurality of 3D cardiac images a target implant region and a locally adjacent region that could interfere with the cardiac implant, wherein the target implant region is a part of a right ventricular outflow tract and the locally adjacent region is a part of a tricuspid valve; simulating the implantation of the cardiac implant within the target implant region in at least two of the plurality of 3D cardiac images; evaluating an overlap of the simulated cardiac implant with the segmented locally adjacent region in at least two of the plurality of 3D cardiac images; and providing feedback information to a user concerning the evaluated overlap.

15 . Computer program comprising program code means for causing a computer to carry out the steps of the method as claimed in claim 13 when said computer program is carried out on a computer.

Assignees

• Koninkl Philips Nv

Inventors

• Weber Frank Michael
• Stehle Thomas Heiko
• Wachter-Stehle Irina
• Peters Jochen
• Weese Juergen

Classifications

• G06T19/00 Primary

  Manipulating three-dimensional [3D] models or images for computer graphics · CPC title

• G06T7/0028

  Physics · mapped topic

• A61B2034/107

  Visualisation of planned trajectories or target regions · CPC title

• A61B8/12

  in body cavities or body tracts, e.g. by using catheters · CPC title

• G06T2210/21

  Collision detection, intersection · CPC title