Method and system of determining depth of interaction in a...

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G - Physics

01

T

G01T 1/20 (2006.01) G01T 1/164 (2006.01) G01T 1/202 (2006.01) G01T 1/208 (2006.01)

Patent

CA 2464827

An apparatus for measuring a depth-of-interaction of a scintillation event in a scintillation camera having a scintillation crystal and an array of photomultiplier tubes is disclosed. The apparatus comprises (a) a collimator coupled to and along the lateral surface of the scintillation crystal for receiving scintillation photons traveling parallel to the plane of the scintillation crystal when a scintillation event occurs, (b) a light deflector optically coupled to and along the lateral surface of the scintillation crystal with the collimator sandwiched between the scintillation crystal and the light deflector for deflecting the direction of the scintillation photons received through the collimator to a certain angle, and (c) a position sensitive photomultiplier tube for detecting the deflected scintillation photons and determining the depth of the scintillation event within the scintillation crystal.

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