초록 ▼

A reduced field of view collimator for a nuclear imaging gamma camera is described. In one form, the collimator includes a gamma ray attenuating plate, several core plates, and a ramp member. The gamma ray attenuating plate is sized to substantially cover a scintillation crystal face, and includes a

A reduced field of view collimator for a nuclear imaging gamma camera is described. In one form, the collimator includes a gamma ray attenuating plate, several core plates, and a ramp member. The gamma ray attenuating plate is sized to substantially cover a scintillation crystal face, and includes an opening. The core plates extend from the attenuating plate at a periphery of the plate opening and define an outer periphery of a collimator core. The ramp member includes a ramp having a sloped surface, and is formed of gamma ray attenuating material. The ramp member is secured adjacent to at least one of the core plates so that the sloped surface extends substantially angularly with respect to the attenuating plate and the core plate.

대표청구항 ▼

[ We claim:] [1.] A collimator for a gamma camera, said collimator comprising:a gamma ray attenuating plate having an opening therein;at least one core plate extending from said attenuating plate, said one core plate coupled at a periphery of said attenuating plate opening defining a collimator core

[ We claim:] [1.] A collimator for a gamma camera, said collimator comprising:a gamma ray attenuating plate having an opening therein;at least one core plate extending from said attenuating plate, said one core plate coupled at a periphery of said attenuating plate opening defining a collimator core having at least one core passage extending substantially through said core; andat least one first ramp member, said first ramp member secured adjacent to said one core plate, said first ramp member comprising a ramp having a sloped surface extending angularly with respect to said attenuating plate and said one core plate.