Modern diagnostic radiologyassures extremely precise diagnosis of a large proportion of diseases. Among other imaging modalities computed tomography (CT) is one of the most usefultool, especially for emergency patients due to its fast and reliable information. However, besides evidential benefits of CT, there are concerns about the potential risks related to ionizing radiation for both: patient and medical stuff. A number of technical innovations were implemented by CT manufactures in order to reduce the dose to the patients. However, so far, there were not so...

Measurements & Marking The measurements were performed in emergency room by using long ionization chamber – simple dosimetry tool - inserted in the cylindrical acrylic phantom 32-cm in diameter. The measurements were done stepwise at different horizontal positions farther from the CT scanner couch in a grid of 50×50 cm. The areas with lower and higher dose were defined and marked by colored stickers were according to a traffic light system: green - lowest and red -highest radiation exposure. Evaluation This new system was evaluated...

In total, 55 non-radiological medical professionals, who often remain in the emergency room during the CT examination, participated in this prospective study. 72% of the respondents confirmed that their awareness of radiation exposure was increased after introducing the traffic light system. The study has also shown the strong correlation between the use of the marking system and the feeling of personal safety (p = 0.023). In one third of all theCT examinations standing on the green area during the whole CT procedure was feasible, without...

Saltybaeva Natalia <[email protected]>

1. The 2007 Recommendations of the International Commission on Radiological Protection, ICRP Publication 103, Ann. ICRP 37 (2-4), 2007 2. Muirhead CR, O’Hagan JA, Haylock RG, et al. Mortality and cancer incidence following occupational radiation exposure: third analysis of the National Registry for Radiation Workers. British J Cancer 2009;100(1):206–12.