Patent ID: 11948290
Assignee: SIEMENS MEDICAL SOLUTIONS USA, INC.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method of characterizing a large field-of-view collimator, comprising:
providing at least one digital camera mounted at a fixed distance from the collimator, wherein the at least one digital camera and the collimator are contained in a light box;
photographing, using the at least one digital camera, a first side of the collimator to generate a first image data;
photographing, using the at least one digital camera, a second side of the collimator to generate a second image data;
generating an optical characterization map (OCM) based on the first and second image data, including generating first and second optical maps based on the first and second image data using one or more image processing techniques and identifying pixels belonging to individual channels of the collimator based on the first and second optical maps, wherein the optical characterization map stores at least measurements of the individual channels of the collimator based on the first and second optical maps; and
performing quality assessment based on the OCM, including determining sensitivities of the individual channels using the measurements stored in the OCM.