Systems, methods, and apparatus of a collimator

Details Systems, methods, and apparatus of a collimator Systems, methods, and apparatus of a collimator

2006-08-01

2006-08-01

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Beam control

Collimator

C378S147000

Reexamination Certificate

active

07085355

ABSTRACT:
Systems, methods and apparatus are provided through which a collimator has one or more varying physical characteristics that have the effect of varying the absorption of electromagnetic energy from a low extent of absorption at a leading edge to the same extent of absorption as the remainder of the collimator. In some embodiments, the collimator has a tapered knife-edge. The varying absorption of electromagnetic energy at different points along the collimator reduce abrupt transitions of projection of the electromagnetic energy onto an electromagnetic energy detector, thereby reducing erroneous artifacts in an image generated by the detector.

REFERENCES:
patent: 5369678 (1994-11-01), Chiu et al.
patent: 6968042 (2005-11-01), Toth et al.
patent: 2003/0016790 (2003-01-01), Grodzins et al.

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