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《Chinese Journal of Radiology》 2002-11
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Comparison of digital mammography and film-screen mammography of clinicapplication

CAI Feng *,ZHANG Tao,GUO Zhangliu, CAI Neng. *Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Beijing Union Medical College, Beijing 100730,China  
Objective To investigate the clinical application of full-field digital mammography (FFDM) and conventional film-screen mammography (FSM)for cancer detection. Methods A review study of 800 patients examined using conventional FSM and 812 patients examined using FFDM was conducted. The number of views and exposes, and the time of examinations were evaluated. The diagnostic results were compared to histopathologic findings in 157 patients for FSM and 115 patients for FFDM. Results The average number of views was 4.87 vs 4.14 per patient on FSM vs FFDM. The average number of exposures was 5.16 vs 4.38 per patient on FSM vs FFDM. The average time of examination was 15.2 min vs 5.4 min per patient on FSM vs FFDM. Histopathology revealed 74 malignant tumors and 83 benign lesions in 157 patients on FSF. FFDM detected 71 malignant tumors and 44 benign lesions in 115 patients. Sensitivity, Specificity and accuracy for FFDM vs FSM were 87.3% vs 82.4%; 84.1% vs 80.7% and 86.1% vs 81.5%, respectively. The difference in cancer detection rate was not statistically significant. Conclusion Although there is no significant difference in the sensitivity, specificity and accuracy in the cancer detection between FSM and FFDM, the FFDM system reduces the number of views and exposes and the time of examination.
【CateGory Index】: R812
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