Abstract
Real-time monitoring of the radiation doses received by interventional radiology (IR) staff has become highly desirable. However, occupational doses are rarely measured in real time, due to the lack of a feasible method for use in IR. Recently, the i2 system by RaySafe™ has been introduced to measure occupational exposure in IR in real time. The i2 system consists of several personal dosimeters (PDs) and a base station with a display and computer interfacing. We evaluated the fundamental performance (dose linearity, dose-rate dependence, angular dependence, batch uniformity and reproducibility) of the i2 system. The dose linearity of the i2 was excellent (R2 = 1.00) The i2 exhibited slight dose-rate dependence (̃20%) at very high dose rates (250 mGy h-1). Little angular dependence (within 20%) was observed between 0° and ±45°, in either the vertical or horizontal direction. We also found that the PD was highly sensitive (about 200%) at angles behind it, e.g. 180°. However, this backscattered radiation is not a problem, in general, due to the placement of the i2 sensor (PD) on the lead apron. We conclude that the i2 system facilitates accurate real-time monitoring and management of occupational doses during IR.
Original language | English |
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Pages (from-to) | N65-N71 |
Journal | Journal of Radiological Protection |
Volume | 34 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2014 Sep |
Keywords
- Fluoroscopically guided procedures
- Occupational radiation exposure
- Radiation dosimetry
- Radiation protection
- Radiation safety
ASJC Scopus subject areas
- Waste Management and Disposal
- Public Health, Environmental and Occupational Health