Calculating the motion vector field for a reconstructed ct scan image
AssigneeShenyang Neusoft Medical Systems Co., Ltd.
InventorsShanshan LOU, Han ZHENG
Life of this patent
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Abstract
A method for calculating a motion vector field (MVF) in a reconstructed CT scan image, comprises: determining a region of interest (ROI) based on a vessel centreline in a first reconstructed CT scan image, wherein a motion vector field (MVF) for the ROI is to be calculated; determining at least two time control points for calculating the MVF; calculating a motion level factor of the ROI; calculating motion amounts of the MVF corresponding to each of the time control points; determining the direction of the MVF of the ROI; and calculating the MVF of the ROI according to the motion level factor, the motion amounts of the MVF corresponding to each of the time control points and the direction of the MVF.
Claims18
A method for calculating the motion vector field (MVF) in a reconstructed CT scan image, comprises:
- determining a region of interest (ROI) based on a vessel centreline in a first reconstructed CT scan image, wherein a motion vector field (MVF) for the ROI is to be calculated;
- determining a time control point for calculating the MVF;
- calculating a motion level factor of the ROI;
- calculating motion amounts of the MVF corresponding to each of the time control points;
- determining the direction of the MVF of the ROI;
- and
- calculating the MVF of the ROI according to the motion level factor, the motion amounts of the MVF corresponding to each of the time control points and the direction of the MVF.
A device for calculating the motion vector field (MVF) in a reconstructed CT scan image, the device comprises a processor which invokes machine readable instructions corresponding to a control logic for calculating a MVF in a reconstructed CT scan image stored on a storage medium and executes the machine readable instructions to:
- determine a region of interest (ROI) based on a vessel centreline in a first reconstructed CT scan image, wherein a motion vector field (MVF) for the ROI is to be calculated;
- determine at least two time control points for calculating the MVF;
- calculate a motion level factor of the ROI;
- calculate motion amounts of the MVF corresponding to each of the time control points;
- determine the direction of the MVF of the ROI;
- and
- calculate the MVF of the ROI according to the motion level factor, the motion amounts of the MVF corresponding to each of the time control points and the direction of the MVF.
Dependencies are inferred from the claim text.