Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Visualization of radiotracers for SPECT imaging using a Timepix detector
  with a coded aperture   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.

9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas