PMID: 8587754Nov 1, 1995Paper

Air contamination following aerosol ventilation in the gamma camera room

Nuclear Medicine Communications
C GreavesW Tindale

Abstract

Air contamination levels arising from lung aerosol ventilation studies have previously been monitored [1]. Residence time in the room used for ventilation was perceived to be an important factor in dose received. This study was designed to assess air contamination levels when ventilation and imaging are carried out in the same room. Air samples were taken before, during and after aerosol administration, over 24 studies where a mouthpiece was used. The mean airborne contamination during administration was 4.39 kBq m-3, implying an effective dose equivalent (EDE) to the operator from inhaled activity of 0.004 microSv. Measurements made during studies on three patients where a mask was used gave a mean EDE of 0.065 microSv (the highest EDE was 0.08 microSv). Ten minutes after nebulizing had stopped, the contamination had reduced to background levels in all but two cases; in these cases, the levels were less than 1.1 kBq m-3. Aerosol ventilation in the gamma camera room does not constitute a significant radiation hazard to staff. Patient compliance is an important factor in minimizing doses. Clear instructions and practice are a vital part of the procedure.

Citations

May 10, 2020·European Journal of Nuclear Medicine and Molecular Imaging·Yang Lu, Homer A Macapinlac
Jun 30, 2001·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·M Avison, G Hart
Aug 1, 2021·Seminars in Nuclear Medicine·Lionel S Zuckier

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