Method and System for Vascular Landmark Detection
AssigneeSiemens Aktiengesellschaft
InventorsDavid Liu, Shaohua Kevin Zhou, Dominik Bernhardt, Dorin Comaniciu
Life of this patent
Estimating the term…
Abstract
The present invention provides a method and system for vascular landmark detection in CT volumes. A CT volume is received and an initial position of a plurality of vascular landmarks is detected. The initial position of each of the plurality of vascular landmarks is then adjusted in order to position each vascular landmark inside a vessel lumen. A new position of each of the plurality of vascular landmarks representing the adjusted initial positions is output.
Claims45
A method for detecting vascular landmarks in a computerized tomography (CT) volume comprising:
- receiving a CT volume;
- detecting an initial position of each of a plurality of vascular landmarks;
- adjusting the initial position of each of the plurality of vascular landmarks to position each vascular landmark inside a vessel lumen;
- and
- outputting a new position of each of the plurality of vascular landmarks representing the adjusted initial positions.
An apparatus for detecting vascular landmarks in a computerized tomography (CT) volume comprising:
- means for receiving a CT volume;
- means for detecting an initial position of each of a plurality of vascular landmarks;
- means for adjusting the initial position of each of the plurality of vascular landmarks to position each vascular landmark inside a vessel lumen;
- and
- means for outputting a new position of each of the plurality of vascular landmarks representing the adjusted initial positions.
A non-transitory computer readable medium encoded with computer executable instructions for detecting vascular landmarks in a computerized tomography (CT) volume, the computer executable instructions defining steps comprising:
- receiving a CT volume;
- detecting an initial position of each of a plurality of vascular landmarks;
- adjusting the initial position of each of the plurality of vascular landmarks to position each vascular landmark inside a vessel lumen;
- and
- outputting a new position of each of the plurality of vascular landmarks representing the adjusted initial positions.
A method for detecting multiple landmarks comprising:
- receiving a CT volume;
- detecting an anchor landmark in the CT volume using a first trained detector;
- determining a search space in the CT volume for each of a plurality of remaining landmarks;
- selecting a second landmark for detection based on the determined search space for each of the plurality of remaining landmarks;
- and
- detecting the second landmark in the CT volume using a second trained detector.
Dependencies are inferred from the claim text.