Method and apparatus for determining stress in an anatomical structure
AssigneeKoninklijke Philips Electronics N.V.
InventorsMarcel Breeuwer, Sander De Putter
Life of this patent
Estimating the term…
Abstract
A method of determining wall stress in an abdominal aortic aneurysm is disclosed. The method includes determining, from anatomical image data, respective first stress values at locations on the wall, based on the aorta having substantially uniform stiffness. The primary direction of stress those locations are determined, and the locations of calcified regions (20) are then determined. The distance to the nearest calcified region is then determined for each location not corresponding to a calcified region, and the additional stress caused by the calcified regions is then determined from values stored in a memory.
Claims18
A method of determining stress in an anatomical structure, the method executed by a processor and comprising:
- determining, from anatomical image data, respective first stress values at a plurality of locations in said structure, based on said structure having stiffness within a first range;
- determining a plurality of first said locations at which the stiffness of said anatomical structure is within a second range, different from said first range;
- and
- determining, at a plurality of second said locations different from said first locations, respective second stress values, representing respective said first stress values corrected to take into account said anatomical structure having stiffness in said second range found in at least one said first location.
An apparatus for determining stress in an anatomical structure, the apparatus comprising at least one processor for:
- determining, from anatomical image data, respective first stress values at a plurality of locations in said structure, based on said structure having stiffness within a first range;
- determining a plurality of first said locations at which the stiffness of said anatomical structure is within a second range, different from said first range;
- and
- determining, at a plurality of second said locations different from said first locations, respective second stress values, representing respective said first stress values corrected to take into account said anatomical structure having stiffness in said second range found in at least one said first location.
A data structure for use by a computer system for determining stress in an anatomical structure, the data structure comprising:
- first computer code executable by a processor to determine, from anatomical image data, respective first stress values at a plurality of locations in said structure, based on said structure having stiffness within a first range;
- second computer code executable by a processor to determine a plurality of first said locations at which the stiffness of said anatomical structure is within a second range, different from said first range;
- and
- third computer code executable by a processor to determine, at a plurality of second said locations different from said first locations, respective second stress values, representing respective said first stress values corrected to take into account said anatomical structure having stiffness in said second range found in at least one said first location.
Dependencies are inferred from the claim text.