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A comparative experimental study of CR vs DR in chest radiography parameter

Houzhang Sun

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Abstract

Objective:To optimize the parameters in chest radiography on CR and DR.Methods:The chest phantom was exposed in different radiation dose on DR and CR.The radiation dose of the phantom was recorded by dosimeter and the value of IQFinv was analyzed.The best IQFinv value of DR and CR was obtained by statistical software,and then the radiography condition of DR and CR was calculated.Results:The linear regression equation for DR was IQFinv =0.005D+3.359,and for CR was IQFinv=0.005D+1.651,where D was radiation dose.On ROC,the under curve area was 0.893,P0.001.From ROC,the optimized IQFinv value was 3.55,where the exposure condition of DR was 125kV,1.6mAs and CR was 125kV,16mAs.Conclusion:The radiation dose of CR is four times to DR for same image quality.

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Objective:To optimize the parameters in chest radiography on CR and DR.Methods:The chest phantom was exposed in different radiation dose on DR and CR.The radiation dose of the phantom was recorded by dosimeter and the value of IQFinv was analyzed.The best IQFinv value of DR and CR was obtained by statistical software,and then the radiography condition of DR and CR was calculated.Results:The linear regression equation for DR was IQFinv =0.005D+3.359,and for CR was IQFinv=0.005D+1.651,where D was radiation dose.On ROC,the under curve area was 0.893,P0.001.From ROC,the optimized IQFinv value was 3.55,where the exposure condition of DR was 125kV,1.6mAs and CR was 125kV,16mAs.Conclusion:The radiation dose of CR is four times to DR for same image quality.

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Available abstract

Objective:To optimize the parameters in chest radiography on CR and DR.Methods:The chest phantom was exposed in different radiation dose on DR and CR.The radiation dose of the phantom was recorded by dosimeter and the value of IQFinv was analyzed.The best IQFinv value of DR and CR was obtained by statistical software,and then the radiography condition of DR and CR was calculated.Results:The linear regression equation for DR was IQFinv =0.005D+3.359,and for CR was IQFinv=0.005D+1.651,where D was radiation dose.On ROC,the under curve area was 0.893,P0.001.From ROC,the optimized IQFinv value was 3.55,where the exposure condition of DR was 125kV,1.6mAs and CR was 125kV,16mAs.Conclusion:The radiation dose of CR is four times to DR for same image quality.

Key concepts: Medicine, Imaging phantom, Radiography, Nuclear medicine, Dosimeter, Radiation dose, Radiology, Dosimetry

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