Patent ID: 11896414
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 8:
9. A method for constructing fluoroscopic-based three dimensional volumetric data of a target area within a patient from a sequence of two-dimensional (2D) images of a target area and of a structure of markers acquired via a rotatble imaging device, wherein the structure of markers is positioned between the patient and the rotatable imaging device, the method comprising using at least one hardware processor for:
detecting a most probable projection of the structure of markers as a whole on each image of at least a portion of the sequence of 2D images acquired via the rotatble imaging device;
estimating a pose of the rotatable imaging device for at least a portion of the sequence of 2D images based on the most probable projection of the structure of markers as a whole on each image of the at least the portion of the sequence of 2D images;
constructing three-dimensional volumetric data of the target area from the at least the portion of the 2D images based on the respective estimated poses of the rotatable imaging device;
determining a distance between a medical device and a target appearing in the three-dimensional volumetric data; and
correcting a display of the medical device with respect to the target based on the distance.