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http://dx.doi.org/10.17135/jdhs.2015.15.3.254

Spatial Dose Distribution from Portable Hand-Held Dental X-Ray Equipment  

Han, Gyeong-Soon (Departments of Dental Hygiene, College of Health Science, Gachon University)
Ahn, Sung-Min (Departments of Radiological Science, College of Health Science, Gachon University)
Publication Information
Journal of dental hygiene science / v.15, no.3, 2015 , pp. 254-258 More about this Journal
Abstract
To compare the stationary dental X-ray generator and the portable dental X-ray generator and to understand spatial radiation dose depended on locations by measuring spatial radiation dose of the portable dental X-ray generator. The researchers used an Ionization chamber to measure spatial radiation dose which was generated while applying X-ray radiation to real bone skull phantom with both portable and stationary dental X-ray generator. There were 4 measurement locations which were immediate anterior, right, left and posterior. Distance of measurement was 50 cm in every location and the recorded result is an average of two applications of X-ray radiation to the maxillary molar area under the condition of 70 kVp, 3 mA, 0.1 sec. Average spatial radiation dose of portable X-ray generator was $37.51{\mu}Sv$, much higher than that of stationary X-ray generator which was $10.77{\mu}Sv$ (p<0.001). The result of the spatial radiation dose of the portable X-ray generator showed a huge difference depending on types of units which varied from $17.77{\mu}Sv$ to $68.90{\mu}Sv$ (p<0.05), also depending on the measurement location, immediate anterior resulted in the highest radiation dose of $54.14{\mu}Sv$ and immediate right was the lowest of $13.60{\mu}Sv$. Immediate left and posterior, however, resulted in similar radiation dose which were $42.12{\mu}Sv$, $40.18{\mu}Sv$ (p<0.01). With this result, we claim that usage of portable dental X-ray generator should be restricted to patients who can't move and exposure to radiation should be minimized by wearing lead-apron.
Keywords
Portable hand-held dental X-ray equipment; Radiation; Radiation defense; Spatial dose;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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