Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TOF-PET detector concept based on organic scintillators   In this contribution we present a new concept of the large acceptance
detector systems based on organic scintillators which may allow for
simultaneous diagnostic of large fraction of the human body. Novelty of the
concept lies in employing large blocks of polymer scintillators instead of
crystals as detectors of annihilation quanta, and in using predominantly the
timing of signals instead of their amplitudes.

16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin