2D3D overlay on a CPR basis for aneurysm repair

A method for fluoroscopy controlled insertion of a stent into a curved aorta of a patient for aneurysm repair, comprising the steps of:

• providing an angiography system having a C-arm;
• obtaining a 3D volume image of the patient's aorta at the aneurysm and also obtaining a curved center line of the patient's curved aorta by use of the angiography system;
• obtaining a 2D fluoroscopy image of the patient by use of the angiography system during said insertion of the stent into the aorta;
• by knowing a registration of said 3D volume image to said C-arm and projection geometry of said angiography system, projecting said 3D volume image, while remaining anatomically correct, to said 2D fluoroscopy image of said angiography system to create a 2D3D overlay;
• for said 2D3D overlay, in order to display the 3D volume image as a curved planar reconstruction (CPR), warping the 2D fluoroscopy image and the 3D volume image around the curved center line to correct for the curvature of the aorta so that the previously curved aorta center line turns into a straight line;
• and
• visualizing with said angiography system insertion of the stent by use of said 2D3D overlay of the angiography system.

A method for fluoroscopy controlled insertion of a stent into a curved aorta of a patient for aneurysm repair, comprising the steps of:

• providing an angiography system having a C-arm;
• obtaining a 3D volume image of the patient's aorta at the aneurysm by use of the angiography system;
• obtaining a 2D fluoroscopy image of the patient by use of said angiography system during said insertion of the stent into the aorta;
• by knowing a registration of said 3D volume image to said C-arm and projection geometry of said angiography system, projecting said 3D volume image, while remaining anatomically correct, to said 2D fluoroscopy image of said angiography system to create a 2D3D overlay;
• for said 2D3D overlay, in order to display the 3D volume image as a curved planar reconstruction (CPR), warping the 2D fluoroscopy image and the 3D volume image around a curved center line of a curved guide instrument used to insert the stent to correct for a curvature of a curved center line of said guide instrument because of the curvature of the aorta so that the guide instrument center line turns into a straight line, and then displaying the 3D volume image as said curved planar reconstruction (CPR);
• and
• visualizing with the angiography system insertion of the stent by use of said 2D3D overlay of the angiography system.

A system for fluoroscopy controlled insertion of a stent into a curved aorta of a patient for aneurysm repair, comprising:

• an angiography system having a C-arm;
• said angiography system obtaining a 3D volume image of the patient's aorta at the aneurysm and also obtaining a 2D fluoroscopy image of the patient during said insertion of the stent into the aorta;
• said angiography system, by knowing a registration of said 3D volume image to said C-arm and projection geometry of said angiography system, projecting said 3D volume image, while remaining anatomically correct, to said 2D fluoroscopy image of said angiography system to create a 2D3D overlay;
• with said angiography system, for said 2D3D overlay in order to display the 3D volume image as a curved planar reconstruction (CPR), warping the 2D fluoroscopy image and the 3D volume image around either a curved center line of the curved aorta or a curved center line of a curved guide instrument used to insert the stent to correct for the curvature of the aorta so that the previously curved aorta center line or guide instrument center line turns into a straight line;
• and
• said angiography system visualizing insertion of the stent by use of said 2D3D overlay of the angiography system.