| JIANG Jin-kai,CAO Gui-jing.The comparative analysis of computed radiography(CR) and screen-film radiography exposure condition[J].Chinese Journal of Radiological Medicine and Protection,2007,27(1):97-98 |
| The comparative analysis of computed radiography(CR) and screen-film radiography exposure condition |
| Received:January 08, 2006 |
| DOI： |
| KeyWords:Computed radiography Radiantion exposure Quality control Imaging plate |
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| Abstract:: |
| Objective To explore the exposure condition of CR and screen-film radiography and the radiation dose to patients,and to evaluate image quality of the CR system. Methods Two thousand and five hundred sheets of CR and screen-film radiography images were selected and then analyzed by two junior radiologists and one senior radiologist. Results 1The quality of the images was classified into grades A,B,C: grade A in 63.6%, grade B in 27.2%, grade C in 9.2%,waste in 0% for CR while grade A in 40.2%, grade B in 42.4%, grade C in 15.6%,waste in 1.8% for screen-film radiography.2The required voltage of CR system was 1-6 kV higher and radiantion exposure was increased by about 20% than the screen-film radiography system. Conclusions The imaging quality of CR was obviously higher than that of the screen-film radiography, providing reliable diagnosis evidence for clinical practice. but the disadvantage of CR system was the higher exposure condition required,which increase the patient dose. |
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