Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Real time evaluation of overranging in helical computed tomography   Overranging or overscanning increases the dose delivered to patients
undergoing helical Computed Tomography examinations. In order to reduce it,
nowadays most of the multidetector tomographs close the X-ray beam aperture at
the scan extremes. This technical innovation, usually referred to as dynamic or
adaptive collimation, also influences the overranging assessment methods. In
particular, the film free approach proposed in previous studies is not suitable
for these modern tomographs. The present study aims to introduce a new method
of estimating overranging with real time dosimetry, even suitable for
tomographs equipped with adaptive collimation. The approach proposed is very
easy to implement and time saving because only a pencil chamber is required. It
is also equivalent in precision and in accuracy to the film based one,
considered an absolute benchmark.

26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int