Personnel radiation dose considerations in the use of an integrated PET–CT scanner for radiotherapy treatment planning of an integrated PET-CT scanner for radiotherapy treatment planning

K J Carson, V A L Young, V P Cosgrove, P H Jarritt, A R Hounsell

Research output: Contribution to journalArticle

15 Citations (Scopus)
319 Downloads (Pure)

Abstract

The acquisition of radiotherapy planning scans on positron emission tomography (PET)-CT scanners requires the involvement of radiotherapy radiographers. This study assessed the radiation dose received by these radiographers during this process. Radiotherapy planning F- fluorodeoxyglucose (F-FDG) PET-CT scans were acquired for 28 non-small cell lung cancer patients. In order to minimise the radiation dose received, a two-stage process was used in which the most time-consuming part of the set-up was performed before the patient received their F-FDG injection. Throughout this process, the radiographers wore electronic personal dosemeters and recorded the doses received at different stages of the process. The mean total radiation dose received by a radiotherapy radiographer was 5.1±2.6 mSv per patient. The use of the two-stage process reduced the time spent in close proximity to the patient by approximately a factor of four. The two-stage process was effective in keeping radiation dose to a minimum. The use of a pre-injection set-up session reduces the radiation dose to the radiotherapy radiographers because of their involvement in PET-CT radiotherapy treatment planning scans by approximately a factor of three.
Original languageEnglish
Pages (from-to)946-949
Number of pages4
JournalBritish Journal of Radiology
Volume82
Issue number983
DOIs
Publication statusPublished - Nov 2009

ASJC Scopus subject areas

  • Medicine(all)
  • Radiology Nuclear Medicine and imaging

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