3-d measurements grid tool for x-ray images
AssigneeKoninklijke Philips N.V.
InventorsAlexandru PATRICIU, Alyssa TORJESEN
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Abstract
Method of calculating a scaled virtual grid for x-ray projection images, comprising providing at least a first and a second co-registered x-ray projection image Ij—j=1, 2, . . . of a desired anatomy of a patient (step S1), defining two points P1 and P2 of the desired anatomy in 3-D space and determining 3-D coordinates of the two points P1 and P2 thereby using the x-ray projection images (step S2), calculating the scaled virtual grid based on the determined 3-D coordinates of the two points P1 and P2 (step S3), and projecting and displaying the calculated grid to a user on at least one of the first and the second co-registered x-ray projection image (step S4).
Claims16
Method of calculating a scaled virtual grid for x-ray projection images, comprising
- providing at least a first and a second co-registered x-ray projection image Ij—j=1,2, . . . of a desired anatomy of a patient (step S1),
- defining at least two points P1 and P2 of the desired anatomy in 3-D space and determining 3-D coordinates of the two points P1 and P2 thereby using the x-ray projection images (step S2),
- calculating the scaled virtual grid based on the determined 3-D coordinates of the two points P1 and P2 (step S3), and
- projecting and displaying the calculated grid to a user on an x-ray projection image, preferably on at least one of the first and the second co-registered x-ray projection image (step S4).
Device for calculating a scaled virtual grid for x-ray projection images, comprising
- a calculation unit configured for:
- receiving at least a first and a second co-registered x-ray projection image Ij of a desired anatomy of a patient,
- calculating two points P1 and P2 in the x-ray projection images and in the desired anatomy thereby determining 3-D coordinates of the two points P1 and P2,
- calculating the scaled virtual grid based on the determined 3-D coordinates of the two points P1 and P2, and
- causing a projection and a displaying of the calculated grid to a user on at least one of the first and the second co-registered x-ray projection image.
Dependencies are inferred from the claim text.