Ray tracing kernel calibration

Details Ray tracing kernel calibration Ray tracing kernel calibration

2005-07-12

2005-07-12

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Auxiliary data acquisition or recording

Distance or dimension marker

C378S004000, C378S023000, C378S205000, C378S207000

Reexamination Certificate

active

06917668

ABSTRACT:
A ray tracing kernel calibration procedure for the film simulation mode of digitized tomosynthesis in which the coordinate of the source position with respect to an energy source, e.g., x-ray radiation, is determined. Shadow images of registration markers are used to aid in computing the azimuth; computing the elevation angle; and using the elevation angle and azimuth to compute the coordinate of source position with respect to the sensor.

REFERENCES:
patent: 4777360 (1988-10-01), Carner, Jr.
patent: 5051904 (1991-09-01), Griffith
patent: 5070454 (1991-12-01), Griffith
patent: 5319550 (1994-06-01), Griffith

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