Patent ID: 11931198
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. An X-ray overlay display method, comprising:
executing, by an X-ray overlay controller, a planning overlay display mode including:
processing, by the X-ray overlay controller, a planning X-ray image acquired by the C-arm at a planning X-ray imaging pose of the C-arm, the planning X-ray image being illustrative of a planning X-ray calibration device and non-illustrative of an interventional tool;
processing, by the X-ray overlay controller, reference planning X-ray image acquired by the C-arm at a reference X-ray imaging pose of the C-arm, the reference planning X-ray image being illustrative of the planning X-ray calibration device and non-illustrative of the interventional tool;
computing, by the X-ray overlay controller, a rigid body transformation between the C-arm at the planning X-ray imaging pose and the C-arm at the reference X-ray imaging pose based on the illustrations of the planning X-ray calibration device in the planning X-ray image and in the reference planning X-ray image;
processing, by the X-ray overlay controller, a base X-ray image acquired by the C-arm at the reference X-ray imaging pose of the C-arm, the planning X-ray image being illustrative of a base X-ray calibration device and non-illustrative of the interventional tool, the base X-ray calibration device being registered to a tool guide;
computing, by the X-ray overlay controller, a rigid body transformation between the C-arm at the planning X-ray imaging pose and a tool guide based on a computation of the rigid body transformation between the C-arm at the planning X-ray imaging pose and the C-arm at the reference X-ray imaging pose and further based on the registration of the base X-ray calibration device to the tool guide; and
controlling, by the X-ray overlay controller, a display of a planned tool trajectory overlay onto the planning X-ray image based on a computation of the rigid body transformation between the C-arm at the planning X-ray imaging pose and a tool guide.