System and method for providing depth of interaction detection using positron emission tomography

摘要

A system and method is provided for determining depth of interaction (DOI) information. The system and method includes a detector configured to generate DOI information as a result of radiation emitted from a radiation source. The system and method further includes a plurality of scintillator pixels forming a block, wherein the plurality of scintillator pixels have a first portion and a second portion. A first medium distributed in an alternating pattern of coupling and separation between each of the scintillator pixels in a first portion or second portion of the block is also provided. A plurality of sensors for detecting scintillation events across the plurality of scintillators based on the alternating pattern of coupling and separation between each of the scintillator pixels, wherein DOI information is provided by a position profile of the block, and an image processor for generating a 3 dimensional image from the DOI information are also included.

主权项

1. A system comprising:
a detector configured to generate depth of interaction (DOI) information of radiation emitted from a radiation source, the detector including:
a plurality of scintillator pixels forming a block, the block having a first portion proximate a radiation incident side thereof, and a second portion proximate a sensor side thereof;the scintillator pixels having a pattern of optical separation media and optical coupling media disposed therebetween in said first portion, and a pattern of optical coupling media and optical separation media disposed therebetween in said second portion that is opposite to the pattern in said first portion, thereby forming a position profile of said block; anda plurality of sensors for detecting scintillation events in each scintillator pixel as a result of absorption of a radiation photon therein, wherein DOI information of radiation photons in each scintillator pixel is provided by detected position of the scintillation events with respect to the position profile of the block, andan image processor using the DOI information to reconstruct a radiation image.