| XIE Zhong-fu,LV Jie,YAN Xiao-bin,et al.The relationship of radiation dose and image quality with tube voltage selection for adult upper airway radiography[J].Chinese Journal of Radiological Medicine and Protection,2012,32(4):425-427 |
| The relationship of radiation dose and image quality with tube voltage selection for adult upper airway radiography |
| Received:September 28, 2011 |
| DOI：10.3760/cma.j.issn.0254-5098.2012.04.026 |
| KeyWords:Upper airway Digital radiography Tube voltage Radiation dose Image quality |
| FundProject: |
| Author Name | Affiliation | | XIE Zhong-fu | Department of Radiology, Huanhu Hospital, Tianjin 300060, China | | LV Jie | Department of Radiology, Huanhu Hospital, Tianjin 300060, China | | YAN Xiao-bin | Department of Radiology, Huanhu Hospital, Tianjin 300060, China | | WANG Bang-ming | Department of Radiology, Huanhu Hospital, Tianjin 300060, China | | LIU Wei | Department of Radiology, Huanhu Hospital, Tianjin 300060, China | | WANG Yi | Department of Radiology, Huanhu Hospital, Tianjin 300060, China | | JIN Song | Department of Radiology, Huanhu Hospital, Tianjin 300060, China |
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| Abstract:: |
| Objective To investigate the relationship between the tube voltage and radiation dose as well as image quality in adult upper airway digital radiography (DR).Methods We used CDRAD2.0 contrast details phantom and PMMA to simulate adult upper airway. With different tube voltages, the phantom was exposed using automatic exposure control system (AEC). The entrance surface dose(ESD), dose area product(DAP) and mAs in every exposures were recorded. The image quality factors(IQF) of all images were calculated. Results With tube voltage increasing, ESD, DAP, mAs decreased and IQF value enhanced. There were statistically significance(F=45.15, 26.41, 29.26, 56.53, P<0.05). ESD, DAP, mAs significantly increased with tube voltage less than 75 kV, began to decrease when tube voltage more than 75 kV, tended to be on the balance in 75-80 kV. At the same time, the fluctuation of IQF value was no statistical difference in 50-75 kV of tube voltage, but was statistical significance in 75-90 kV(F=11.35,P<0.05). So, the image quality of adult upper airway with different tube voltage had no significant difference. Conclusions The appropriate tube voltage was 75 kV to 80 kV in the upper airway DR. The IQF value can be provided as the clinical evaluation index of image quality. |
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