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The dominant powder scintillator in most medical imaging modalities for decades is Gd2O2S:Tb due to the very good intrinsic properties and overall efficiency. Except Gd2O2S:Tb there are alternative powder phosphor scintillators like Lu2SiO5:Ce and Gd2O2S:Eu that has been suggested for use in various medical imaging modalities. Gd2O2S:Eu emits red light and can be combined mainly with digital detectors...
The presented work is an investigation of the performance of currently used scintillators in PET and animal PET systems, under conditions met in radiation therapy and PET/CT imaging. The results of this study could be useful in designing a common detector system where both the CT and PET photons and/or megavoltage cone beam CT (MV CBCT) photons could be detected. The short decay time of the Ce3+ doped...
We report on the experimental analysis at room temperature of high-quality factor (Q) two-dimensional photonic crystal nanocavities. SiGe/Si self-assembled islands are embedded as active internal sources inside the photonic crystal slab. In this work we focus on longitudinal nanocavities design, i.e. L3 and L4 type cavities. A tuning of the L3 quality factor is achieved by fine modification of hole...
This work investigates the light emission efficiency of Lu2SiO5:Ce (LSO) powder scintillator under X-ray radiographic imaging conditions. Powder LSO scintillator has never been previously used in X-ray imaging. For the purposes of the present study three scintillating screens with coating thickness of 63.4, 108.4 and 172.5 mg/cm2, were prepared by sedimentation of LSO powder. Absolute luminescence...
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