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Optimization of energy and directional response of a small 4π silicon dosemeter for quality control of CT/CBCT-units – A 3D CAD, Monte-Carlo, AM approach

Herrnsdorf, L. LU ; Andersson, M. LU ; Gunnarsson, M. LU and Mattsson, S. LU (2020) In Applied Radiation and Isotopes 158.
Abstract

A 4π radiation dosemeter for use in medical radiology was designed. It is based on a solid state silicon detector, a sensor wafer, a flex card, a 3D plastic holder and a spherical stainless steel filter with a distribution of holes around the detector. The detector is attached to the wafer using only low Z material. To achieve an energy and directional response which is as uniform as possible for various radiation qualities and beam directions, the filter was designed using a series of Monte Carlo calculations. The energy filter and its hole pattern were created using Additive Manufacturing (AM) in the form of metal 3D printing. The functionality of the dosemeter was designed to fulfill the quality criteria of a combined energy and... (More)

A 4π radiation dosemeter for use in medical radiology was designed. It is based on a solid state silicon detector, a sensor wafer, a flex card, a 3D plastic holder and a spherical stainless steel filter with a distribution of holes around the detector. The detector is attached to the wafer using only low Z material. To achieve an energy and directional response which is as uniform as possible for various radiation qualities and beam directions, the filter was designed using a series of Monte Carlo calculations. The energy filter and its hole pattern were created using Additive Manufacturing (AM) in the form of metal 3D printing. The functionality of the dosemeter was designed to fulfill the quality criteria of a combined energy and angular dependence of less than 5% for the IEC beam qualities RQR and RQT in the range of 65–145 kV. This is a major improvement to the existing solutions that may need software corrections to be used for the same beam quality range.

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type
Contribution to journal
publication status
published
subject
in
Applied Radiation and Isotopes
volume
158
article number
109050
publisher
Elsevier
external identifiers
  • scopus:85079866619
  • pmid:32174375
ISSN
0969-8043
DOI
10.1016/j.apradiso.2020.109050
language
English
LU publication?
yes
id
56075a93-5eac-4f37-ae27-5b5f2c8e07d1
date added to LUP
2020-03-09 14:36:18
date last changed
2024-04-03 04:25:55
@article{56075a93-5eac-4f37-ae27-5b5f2c8e07d1,
  abstract     = {{<p>A 4π radiation dosemeter for use in medical radiology was designed. It is based on a solid state silicon detector, a sensor wafer, a flex card, a 3D plastic holder and a spherical stainless steel filter with a distribution of holes around the detector. The detector is attached to the wafer using only low Z material. To achieve an energy and directional response which is as uniform as possible for various radiation qualities and beam directions, the filter was designed using a series of Monte Carlo calculations. The energy filter and its hole pattern were created using Additive Manufacturing (AM) in the form of metal 3D printing. The functionality of the dosemeter was designed to fulfill the quality criteria of a combined energy and angular dependence of less than 5% for the IEC beam qualities RQR and RQT in the range of 65–145 kV. This is a major improvement to the existing solutions that may need software corrections to be used for the same beam quality range.</p>}},
  author       = {{Herrnsdorf, L. and Andersson, M. and Gunnarsson, M. and Mattsson, S.}},
  issn         = {{0969-8043}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Applied Radiation and Isotopes}},
  title        = {{Optimization of energy and directional response of a small 4π silicon dosemeter for quality control of CT/CBCT-units – A 3D CAD, Monte-Carlo, AM approach}},
  url          = {{http://dx.doi.org/10.1016/j.apradiso.2020.109050}},
  doi          = {{10.1016/j.apradiso.2020.109050}},
  volume       = {{158}},
  year         = {{2020}},
}