Investigation on radiation doses to patients in digital radiography

VernacularTitle:数字摄影受检者辐射剂量调查
Author: Zhengshuai QIU ; Daping DENG ; Quantai LI ; Gang SONG ; Xu SU
Publication Type:Journal Article
Keywords: Digital radiography; Exposed patients; Radiation dose
From: Chinese Journal of Radiological Medicine and Protection 2014;34(5):372-375
CountryChina
Language:Chinese
Abstract: Objective To investigate the patients' radiation dose received in digital radiography (DR) and provide basic data for developing diagnostic reference levels.Methods The patient' s ESD was estimated using the TLDs and DAP was measured by the dose-area product meter.The E values were then calculated by the DAP using Monte Carlo data and RefDose software.Measurements were made for twelve types of examination:skull PA,skull LAT,chest PA,chest LAT,abdomen AP,pelvis AP,cervix spine PA,cervix spine LAT,thoracic spine PA,thoracic spine LAT,lumber spine PA and lumber spine LAT.Results Both kV and mAs varied in the same type of examination for ESD,DAP and E(F =33.47,24.68,43.19,P ＜ 0.05).The dose each time for lumber spine LAT was the highest,reached 4.62 mGy in ESD and 2.26 Gy·cm2 in DAP,respectively.The E of abdomen AP averaged as 0.59 mSv,higher than that of lumber spine LAT.Even for the same type of examination,the dose from each equipment was different.Conclusions DR has the potential to reduce the patients' radiation doses.The guidance levels suitable for Chinese population should be established as soon as possible.