Edge effects treatment for crystals

G - Physics – 02 – B

Patent

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Details

G02B 17/00 (2006.01) G01T 1/164 (2006.01) G01T 1/20 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2546919

A scintillator, for use in a radiation imaging device, has a light-emitting face, a radiation receiving face, and a perimeter extending between the light- emitting face and the radiation receiving face, the perimeter including an edge, the edge having an edge thickness. The scintillator emits scintillation light from the light emitting face in response to radiation incident on the radiation receiving face. The scintillator has one or more light guides formed within a peripheral region of the scintillator proximate to the edge. The light guides can improve the positional accuracy of a radiation imaging device including the scintillator.

L'invention concerne un scintillateur s'utilisant dans un dispositif d'imagerie radiologique, qui comporte une face photoémettrice, une face de réception de rayonnements et un périmètre s'étendant entre la face photoémettrice et la face de réception de rayonnements. Ledit périmètre comprend un bord ayant une certaine épaisseur. Le scintillateur émet une lumière de scintillation à partir de la face photoémettrice, en réponse au rayonnement incident sur la face recevant le rayonnement. Le scintillateur comporte un ou plusieurs guides lumineux formés dans une région périphérique du scintillateur, à proximité du bord. Les guides lumineux améliorent la précision positionnelle d'un dispositif d'imagerie radiologique intégrant le scintillateur.

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