Patent ID: 7084404

Claim:
A CT system comprising: a rotatable gantry having a bore centrally disposed therein; a table movable fore and aft through the bore and configured to position a subject for CT data acquisition; a high frequency electromagnetic energy projection source positioned within the rotatable gantry and configured to project high frequency electromagnetic energy toward the subject; and a detector array disposed within the rotatable gantry and configured to detect high frequency electromagnetic energy projected by the projection source and impinged by the subject, the detector array including: a plurality of scintillators arranged in a scintillator array; a plurality of photodiodes arranged in a photodiode array; and a light collimator having a plurality of collimator plates that collectively define a plurality of light transmission cavities disposed between the plurality of scintillators and the plurality of photodiodes, the plurality of collimator plates formed of light reflective material and arranged such that each light transmission cavity is disposed entirely between a light reception surface of a photodiode and a light emission surface of a scintillator, wherein the plurality of light transmission cavities are air-filled.