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Influence of Different Arm Positions in the Localizer Radiograph(s) on Patient Dose during Exposure-Controlled CT Examinations of the Neck to Pelvis

1
Centre for Research and Development, Uppsala University/Region Gävleborg, 801 88 Gävle, Sweden
2
Department of Imaging and Functional Medicine, Division Diagnostics, Gävle Hospital, 801 88 Gävle, Sweden
3
Department of Imaging and Functional Medicine, Division Diagnostics, Hudiksvall Hospital, 824 43 Hudiksvall, Sweden
4
Department of Organismal Biology, Uppsala University, 752 36 Uppsala, Sweden
*
Author to whom correspondence should be addressed.
Academic Editor: Dong-Hyun Kim
Tomography 2021, 7(3), 313-322; https://doi.org/10.3390/tomography7030028
Received: 3 June 2021 / Revised: 25 July 2021 / Accepted: 26 July 2021 / Published: 29 July 2021
Our aim was to examine the impact of different arm positions during imaging of the localizer radiograph(s) on effective dose for exposure-controlled computed tomography (CT) (Siemens/Canon) scans of the neck to pelvis. An anthropomorphic whole-body phantom was scanned from the neck to pelvis with the arms positioned in three different ways during the acquisition of the localizer radiograph: (i) above the head, (ii) alongside the trunk, and (iii) along the trunk with the hands placed on the abdomen. In accordance with clinical routines, the arms were not included in the subsequent helical scans. Effective doses were computed to a standard-sized patient (male/female) using a dedicated system-specific Monte Carlo-based software. Effective doses for the Canon CT scanner for the different alternatives (male/female) were (a) 5.3/6.62 mSv, (b) 5.62/7.15 mSv and (c) 5.92/7.44 mSv. For the Siemens CT scanner, effective doses were (a) 4.47/5.59 mSv, (b) 5.4/6.69 mSv and (c) 5.7/6.99 mSv. Arms placed above the head during localizer radiograph imaging in the current CT procedures substantially reduced the total effective dose to the patient. View Full-Text
Keywords: radiation dose; computed tomography; localizer radiograph; organ-based dose optimization; arm positions radiation dose; computed tomography; localizer radiograph; organ-based dose optimization; arm positions
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MDPI and ACS Style

Svahn, T.M.; Peric, L.; Ast, J.C. Influence of Different Arm Positions in the Localizer Radiograph(s) on Patient Dose during Exposure-Controlled CT Examinations of the Neck to Pelvis. Tomography 2021, 7, 313-322. https://doi.org/10.3390/tomography7030028

AMA Style

Svahn TM, Peric L, Ast JC. Influence of Different Arm Positions in the Localizer Radiograph(s) on Patient Dose during Exposure-Controlled CT Examinations of the Neck to Pelvis. Tomography. 2021; 7(3):313-322. https://doi.org/10.3390/tomography7030028

Chicago/Turabian Style

Svahn, Tony M., Lovre Peric, and Jennifer C. Ast 2021. "Influence of Different Arm Positions in the Localizer Radiograph(s) on Patient Dose during Exposure-Controlled CT Examinations of the Neck to Pelvis" Tomography 7, no. 3: 313-322. https://doi.org/10.3390/tomography7030028

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