Method for defining a placement position
AssigneeAngiolutions GmbH
InventorsUwe Raaz, Isabel Nahal Schellinger
Life of this patent
Estimating the term…
Abstract
A planning method for defining a placement position of a stent in an abdominal aorta of a subject is described. An abdominal aortic aneurysm portion of the abdominal aorta has an aneurysm sac and an aneurysm neck, a distal end of the aneurysm neck, a lower renal aortic ostium, a first distance between a distal end of the lower renal aortic ostium and the distal end of the aneurysm neck, and a second distance between a proximal end of the lower renal aortic ostium and the distal end of the aneurysm neck are identified in image data. The first distance is compared with a minimum stent length. A stent placement position is defined based on a selected stent length such that a distal end of the stent is aligned with the distal end of the aneurysm neck.
Claims22
A planning method for defining a placement position of a stent in an abdominal aorta of a subject, the method comprising:
- providing image data representing at least a portion of the abdominal aorta of the subject;
- identifying, in said image data:
- an abdominal aortic aneurysm portion of the abdominal aorta having an aneurysm sac and an aneurysm neck,
- a distal end of the aneurysm neck,
- a lower renal aortic ostium,
- a first distance between a distal end of the lower renal aortic ostium and the distal end of the aneurysm neck, and
- a second distance between a proximal end of the lower renal aortic ostium and the distal end of the aneurysm neck;
- comparing the first distance with a minimum stent length;
- selecting a stent length smaller than the first distance or larger than the second distance if the first distance is larger than the minimum stent length;
- selecting the stent length larger than the second distance if the first distance is smaller than the minimum stent length;
- and
- defining a stent placement position based on the selected stent length such that a distal end of the stent is aligned with the distal end of the aneurysm neck.
A method comprising:
- determining, based on image data of a subject, a first distance between a distal end of a lower renal aortic ostium and a distal end of an aneurysm neck;
- determining, based on the image data of the subject, a second distance between a proximal end of the lower renal aortic ostium and the distal end of the aneurysm neck;
- comparing the first distance with a minimum stent length;
- selecting a stent length smaller than the first distance or larger than the second distance if the first distance is larger than the minimum stent length;
- selecting the stent length larger than the second distance if the first distance is smaller than the minimum stent length;
- and
- defining a stent placement position based on the selected stent length such that a distal end of a stent is aligned with the distal end of the aneurysm neck.
An imaging apparatus for displaying a placement position of a stent in an abdominal aorta of a subject, the imaging apparatus comprising:
- a representation providing unit for providing image data representing at least a portion of the abdominal aorta of the subject;
- an identification unit for identifying, in said image data:
- an abdominal aortic aneurysm portion of the abdominal aorta having an aneurysm sac and an aneurysm neck,
- a distal end of the aneurysm neck,
- a lower renal aortic ostium,
- a first distance between a distal end of the lower renal aortic ostium and the distal end of the aneurysm neck, and
- a second distance between a proximal end of the lower renal aortic ostium and the distal end of the aneurysm neck;
- a placement position providing unit for:
- comparing the first distance with a minimum stent length;
- selecting a stent length smaller than the first distance or larger than the second distance if the first distance is larger than the minimum stent length;
- selecting the stent length larger than the second distance if the first distance is smaller than the minimum stent length;
- and
- defining a stent placement position based on the selected stent length such that a distal end of the stent is aligned with the distal end of the aneurysm neck;
- and
- a display for displaying the stent placement position.
Dependencies are inferred from the claim text.