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• W2050605403 abstract "In this paper we present the performance evaluation results, in the planar and tomographic modes, of a low-cost positron emission tomography camera dedicated to small-animal imaging. The system consists of two pixelated Lu2SiO5 crystals, two Hamamatsu H8500 position sensitive photomultiplier tubes, fast amplification electronics and an FPGA-USB-based read-out system. The parameters that have been studied are (i) saturation as a function of the head distance and photon acceptance angle, (ii) effect of the number of projections and half or complete head's rotation, (iii) spatial resolution as a function of the head distance, (iv) spatial resolution as a function of acceptance angle, (v) system's sensitivity as a function of these parameters and (vi) performance in small mice imaging. Image reconstruction has been carried out using open source software developed by our group (QSPECT), which is designed mainly for SPECT imaging. The results indicate that the system has a linear response for activities up to at least 2 MBq, which are typical in small-animal imaging. Best tomographic spatial resolution was measured to be ~2 mm. The system has been found suitable for imaging of small mice both in the planar and tomographic modes." @default.
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• W2050605403 date "2011-10-14" @default.
• W2050605403 modified "2023-10-12" @default.
• W2050605403 title "Tomographic evaluation of a dual-head positron emission tomography system" @default.
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• W2050605403 doi "https://doi.org/10.1088/0957-0233/22/11/114010" @default.
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