X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2007-05-29
2007-05-29
Ho, Allen C. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C250S367000, C250S370090, C250S370110, C252S30140R
Reexamination Certificate
active
11029612
ABSTRACT:
The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.
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Valery I. Chani et al., Melt Growth of (Tb,Lu)3 Al5 O12 Mixed Garnet Fiber Crystals, Journal of Crystal Growth, 2000, pp. 469-475, vol. 212, Publisher: Elsevier Science B.V., Published in: US.
Hoffman David M.
Jiang Haochuan
Vartuli James S.
Della Penna Michael A.
General Electric Company
Ho Allen C.
Horton Carl B.
Ziolkowski Patent Solutions Group, SC
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