摘要
Abstract
Objective To compare the value in examination of breast cancer between digital radiography (DR)and computed radiography (CR).Methods 70 cases with breast nodules were photographed by CR and DR.their radiation dose and checking time were evaluated.The diagnostic results were compared to pathologic result.Results Histopathology revealed 50 malignant tumors and 20 benign lesions.DR can bet er display slight calcification,nodular shadows,ir egular dense shade and increased vascular enlargement.The radiation dose is respectively (1.04±0.28)mGy and (1.95±0.21)mGy,the checking time is respectively (4.05±0.11)minutes and (8.37±0.20)minutes.These dif erences suggest a statistic meaning ( <0.05).Sensitivity,specificity and accuracy for DR and CR were respectively 86.0%/72.0%,60.0%/55.0%,78.6%/67.1%.Conclusion The sensitivity,specificity and accuracy in diagnosis of breast cancer of DR were higher than CR.DR reduces the radiation dose,exposes the testing time.关键词
数字化X线摄影(DR)/计算机X线摄影(CR)/乳腺癌Key words
Digital radiography(DR)/Computed radiography(CR)/Breast cancer
