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Visualization of radiotracers for SPECT imaging using a Timepix detector with a coded aperture

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arxiv 2004.09268 v2 pith:S7LDEYYP submitted 2020-04-20 physics.med-ph physics.ins-det

V. Rozhkov , G. Chelkov , I. Hernández , O. Ivanov , D. Kozhevniko , A. Leyva , A. Perera , D. Rastorguev
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P. Smolyanskiy L. Torres A. Zhemchugov
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classification physics.med-phphysics.ins-det
keywords systemaperturecodeddetectormaskradiotracersresolutionspatial
verification ladder T0 review T1 audit T2 compute T3 formal
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The work shows the ability to visualize radiotracers used in SPECT with a system based on a coded aperture mask and a hybrid pixel Timepix detector with the CdTe sensor. Characterization of the system using X-rays and radioactive sources confirms that the spatial resolution of less than 1 mm with a field of view 3 cm x 3 cm can be achieved. The results of a simulation study to determine the expected spatial resolution of the system in the focal plane for the various radionuclides is presented. The possibility of using this system with a thin (1.5 mm) coded aperture mask for reconstructing images of gamma emitters with the energy up to 180 keV is demonstrated.

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