Image provision for registration
AssigneeKoninklijke Philips Electronics N.V.
InventorDaniel Simon Anna Ruijters
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Abstract
The invention relates to a device and a method for providing a basis for registering a three-dimensional model of an anatomical region with two-dimensional projection images, by deriving a three-dimensional model of an anatomical region at a phase of a periodic signal; deriving two-dimensional projection images of a region which overlaps with the anatomical region re-constructed as the three-dimensional model; pre-5 selecting a subset of projection images out of the derived two-dimensional projection images, which are closest to the phase; and selecting a reference image for the registration from the subset of pre-selected projection images by choosing the projection image with the most contrast.
Claims13
A device for providing a basis for registering a three-dimensional model of an anatomical region with two-dimensional projection images, comprising:
- a 3D imaging system (10) for deriving a three-dimensional model of an anatomical region at a phase of a periodic signal;
- a 2D imaging system (11) for deriving two-dimensional projection images of a region which overlaps with the anatomical region reconstructed by the 3D imaging system;
- a pre-selector (15) for selecting a subset of projection images out of the derived two-dimensional projection images, which are closest to the phase;
- and
- a selector (16) for selecting a reference image for the registration from the subset of pre-selected projection images by choosing the projection image with the most contrast.
A method of providing a basis for registering a three-dimensional model of an anatomical region with two-dimensional projection images, comprising the steps:
- deriving a three-dimensional model (S100) of an anatomical region at a phase of a periodic signal;
- deriving two-dimensional projection images (S101) of a region which overlaps with the anatomical region reconstructed as the three-dimensional model;
- pre-selecting (S103) a subset of projection images out of the derived two-dimensional projection images, which are closest to the phase;
- and
- selecting (S104) a reference image for the registration from the subset of pre-selected projection images by choosing the projection image with the most contrast.
Dependencies are inferred from the claim text.