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Radiation dose

LL Lukas Lenga
ML Marvin Lange
SM Simon S Martin
MA Moritz H Albrecht
CB Christian Booz
IY Ibrahim Yel
CA Christophe T Arendt
TV Thomas J Vogl
DL Doris Leithner
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Volume CT dose index (CTDIvol) and dose–length product (DLP) values were recorded from the patient’s protocols, which were available in our picture archiving and communication system (PACS). Mean scan acquisition length in centimeters was measured as the ratio of DLP and CTDIvol. As differences in scan acquisition length might have an impact on radiation exposure and to ensure reliable comparisons among the four study groups, an overall mean scan acquisition length of 27 cm for head and neck CT was used, based on all included examinations. This value was calculated by measuring and averaging the scan acquisition length of all included examinations. For both, SECT and DECT acquisition, DLP was multiplied with the International Commission on Radiological Protection conversion factor k for head and neck CT of 0.0058 (mSv / mGy x cm) to calculate effective dose (ED).15

Copyright and License information:  ©2021 The Authors. Published by the British Institute of Radiology
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.

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