Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A list-mode OSEM-based attenuation and scatter compensation method for
  SPECT   Reliable attenuation and scatter compensation (ASC) is a prerequisite for
quantification and beneficial for visual interpretation tasks in SPECT. In this
paper, we develop a reconstruction method that uses the entire SPECT emission
data, i.e. data in both the photopeak and scatter windows, acquired in
list-mode format and including the energy attribute of the detected photon, to
perform ASC. We implemented a GPU-based version of this method using an ordered
subsets expectation maximization (OSEM) algorithm. The method was objectively
evaluated using realistic simulation studies on the task of estimating uptake
in the striatal regions of the brain in a 2-D dopamine transporter (DaT)-scan
SPECT study. We observed that inclusion of data from the scatter window and
using list-mode data yielded improved quantification compared to using data
only from the photopeak window or using binned data. These results motivate
further development of list-mode-based ASC methods that include scatter-window
data for SPECT.

29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol