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Influence of localizer and scan direction on the dose-reducing effect of automatic tube current modulation in computed tomography

Caro Franck UGent and Klaus Bacher UGent (2016) RADIATION PROTECTION DOSIMETRY. 169(1-4). p.136-142
abstract
The purpose of this study was to investigate the influence of the localizer and scan direction on the dose-reducing efficacy of the automatic tube current modulation (ATCM) in computed tomography (CT). Craniocaudal and caudocranial chest CT scans, based on anterior-posterior (AP), posterior-anterior (PA), lateral (LAT) or dual AP/LAT localizers, of an anthropomorphic phantom containing thermoluminescent dosimeters (TLDs), were made on three Siemens systems. TLD readings were converted to lung and thyroid doses. A second dose estimation was performed based on Monte Carlo simulations. In addition, the ATCM behaviour of GE and Toshiba was evaluated based on AP, PA and LAT localizers. Compared with AP, tube currents of PA and AP/LAT scans were on average 20 % higher and 40 % lower, respectively, for the Siemens systems. Consequently, thyroid and lung doses increased with 60 % with a PA instead of an AP/ LAT scan, with significant differences in image noise. Moreover, the thyroid dose halves by taking the scan in caudocranial direction. Noise values were not significantly different when changing scan direction.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
MONTE-CARLO TOOL, CURRENT CT, REDUCTION, ATTENUATION, VALIDATION, PATIENT, PHANTOM, SIMULATION, ABDOMEN, PELVIS
journal title
RADIATION PROTECTION DOSIMETRY
Radiat. Prot. Dosim.
volume
169
issue
1-4
pages
136 - 142
Web of Science type
Article
Web of Science id
000383492100021
JCR category
NUCLEAR SCIENCE & TECHNOLOGY
JCR impact factor
0.917 (2016)
JCR rank
20/33 (2016)
JCR quartile
3 (2016)
ISSN
0144-8420
1742-3406
DOI
10.1093/rpd/ncw077
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8518162
handle
http://hdl.handle.net/1854/LU-8518162
date created
2017-04-20 08:39:09
date last changed
2017-07-14 10:16:46
@article{8518162,
  abstract     = {The purpose of this study was to investigate the influence of the localizer and scan direction on the dose-reducing efficacy of the automatic tube current modulation (ATCM) in computed tomography (CT). Craniocaudal and caudocranial chest CT scans, based on anterior-posterior (AP), posterior-anterior (PA), lateral (LAT) or dual AP/LAT localizers, of an anthropomorphic phantom containing thermoluminescent dosimeters (TLDs), were made on three Siemens systems. TLD readings were converted to lung and thyroid doses. A second dose estimation was performed based on Monte Carlo simulations. In addition, the ATCM behaviour of GE and Toshiba was evaluated based on AP, PA and LAT localizers. Compared with AP, tube currents of PA and AP/LAT scans were on average 20 \% higher and 40 \% lower, respectively, for the Siemens systems. Consequently, thyroid and lung doses increased with 60 \% with a PA instead of an AP/ LAT scan, with significant differences in image noise. Moreover, the thyroid dose halves by taking the scan in caudocranial direction. Noise values were not significantly different when changing scan direction.},
  author       = {Franck, Caro and Bacher, Klaus},
  issn         = {0144-8420},
  journal      = {RADIATION PROTECTION DOSIMETRY},
  keyword      = {MONTE-CARLO TOOL,CURRENT CT,REDUCTION,ATTENUATION,VALIDATION,PATIENT,PHANTOM,SIMULATION,ABDOMEN,PELVIS},
  language     = {eng},
  number       = {1-4},
  pages        = {136--142},
  title        = {Influence of localizer and scan direction on the dose-reducing effect of automatic tube current modulation in computed tomography},
  url          = {http://dx.doi.org/10.1093/rpd/ncw077},
  volume       = {169},
  year         = {2016},
}

Chicago
Franck, Caro, and Klaus Bacher. 2016. “Influence of Localizer and Scan Direction on the Dose-reducing Effect of Automatic Tube Current Modulation in Computed Tomography.” Radiation Protection Dosimetry 169 (1-4): 136–142.
APA
Franck, C., & Bacher, K. (2016). Influence of localizer and scan direction on the dose-reducing effect of automatic tube current modulation in computed tomography. RADIATION PROTECTION DOSIMETRY, 169(1-4), 136–142.
Vancouver
1.
Franck C, Bacher K. Influence of localizer and scan direction on the dose-reducing effect of automatic tube current modulation in computed tomography. RADIATION PROTECTION DOSIMETRY. 2016;169(1-4):136–42.
MLA
Franck, Caro, and Klaus Bacher. “Influence of Localizer and Scan Direction on the Dose-reducing Effect of Automatic Tube Current Modulation in Computed Tomography.” RADIATION PROTECTION DOSIMETRY 169.1-4 (2016): 136–142. Print.