Image processing device and method for blood flow imaging
AssigneeKoninklijke Philips Electronics N.V.
InventorsMichael Grass, Holger Schmitt
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Abstract
An image processing device is proposed and includes a reconstruction unit (51) for reconstruction of a 3D volume image of said object from said first series of X-ray projection images (D), a segmentation unit (52) for segmentation of the vessel tree from said 3D volume image, a forward projection unit (54) for forward projection of the segmented vessel tree onto said first and projection plane (R1, R2), respectively, and a mapping unit (55) for mapping of the image values of pixels of the vessel tree in said second and third, respectively, series of X-ray projection images onto corresponding voxels of said 3D volume image to obtain said time series of 3D volume images showing the blood flow in the vascular tree of the object.
Claims12
An image processing device (5) for generating a time series of 3D volume images showing blood flow in a vascular tree of an object (40), based on a first series of X-ray projection images (D) of the object acquired from different projection directions and a second and a third series of X-ray projections images (E, F) of the object acquired alternately at a first or second fixed projection plane, respectively, during inflow of contrast agent into the vascular tree of the object, said device comprising:
- a reconstruction unit (51) for reconstruction of a 3D volume image of said object from said first series of X-ray projection images (D),
- a segmentation unit (52) for segmentation of the vascular tree from said 3D volume image,
- a forward projection unit (54) for forward projection of the segmented vascular tree onto said first and second projection plane (R1, R2), respectively, and
- a mapping unit (55) for mapping of the image values of pixels of the vascular tree in said second and third, respectively, series of X-ray projection images onto corresponding voxels of said 3D volume image to obtain said time series of 3D volume images showing the blood flow in the vascular tree of the object.
An image processing method for generating a time series of 3D volume images showing blood flow in a vascular tree of an object, based on a first series of X-ray projection images (D) of the object acquired from different projection directions and a second and a third series of X-ray projections images (E, F) of the object acquired alternately at a first or second fixed projection plane, respectively, from a first or second fixed projection direction, respectively, during inflow of contrast agent into the vascular tree of the object, said method comprising the steps of:
- reconstructing a 3D volume image of said object from said first series of X-ray projection images (D),
- segmenting the vascular tree from said 3D volume image,
- forward projecting of the segmented vascular tree onto said first and second projection plane (R1, R2), respectively, and
- mapping of the image values of pixels of the vascular tree in said second and third, respectively, series of X-ray projection images onto corresponding voxels of said 3D volume image to obtain said time series of 3D volume images showing the blood flow in the vascular tree of the object.
Dependencies are inferred from the claim text.