An imaging apparatus

G - Physics – 01 – T

Patent

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Details

G01T 1/161 (2006.01) G01T 1/164 (2006.01) G01T 1/29 (2006.01)

Patent

CA 2230470

The invention relates to an imaging apparatus (1) incorporating a dual-headed gamma camera modified for use with Positron Emission Tomography. Gamma cameras have been used in positron emitting tomography (PET). Collimators on each of the gamma cameras have reduced the amount of signal which the gamma cameras were able to detect. The present invention provides a modified dual-headed gamma camera which has the ability to image single photon emitting events without any limitation as to solid angle. The invention is more sensitive than existing systems. Use of fast digital signal processing (DSP) techniques and deconvolution using a point response function provide an enhanced image of an object.

Appareil d'imagerie (1) comprenant une camera gamma à deux têtes modifiée pour utilisation en tomographie par émission de positrons. Des caméras gamma sont utilisées dans la tomographie par émission de positrons (PET). Des collimateurs sur chaque caméra gamma réduisent l'intensité du signal que les caméras gamma sont capables de détecter. L'invention concerne une caméra gamma modifiée à deux têtes, capable de donner une représentation visuelle d'événement isolés d'émission de photons, sans limite quant à l'angle solide. Ce nouveau système est plus sensible que les anciens systèmes. L'utilisation de techniques de traitement numérique de signaux (DSP) rapides et de déconvolution au moyen d'une fonction de réponse par point permet d'obtenir une image améliorée d'un objet.

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