Patent ID: 11911207
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 18:
19. The C-arm registration method as claimed in claim 16, further comprising:
acquiring, via the C-arm registration controller, a target X-ray image illustrative of the X-ray ring marker within a target X-ray projection by the C-arm at target imaging pose;
deriving, via the C-arm registration controller, target position parameters of the X-ray ring marker as a function of an illustration of the centric ring within the target X-ray image, the target position parameters being definitive of a position of the X-ray ring marker within the target X-ray projection; and
deriving, via the C-arm registration controller, a target twist parameter definitive of the X-ray ring marker as a function of the target position parameters and of an illustration of the chirp ring within the target X-ray image, the target twist parameter being definitive of a twist of the X-ray ring marker within the target X-ray projection.