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目的 评价计算机辅助检测 (CAD)系统在乳腺癌X线诊断中的临床应用价值。方法使用CAD系统对 136例乳腺癌钼靶X线片进行检测 ,以手术病理结果为标准对CAD标记结果进行统计分析 ,并与放射科医生的检测结果进行比较。结果 CAD系统对微小钙化的敏感性为 93 2 %(4 1/ 4 4) ,特异性为 2 2 8% (2 1/ 92 ) ,准确性为 4 5 6 % (6 2 / 136 ) ;CAD系统对肿块及结构紊乱病灶敏感性为 82 9% (10 7/ 12 9) ,特异性为 71 4 % (5 / 7) ,准确性为 82 4 % (112 / 136 )。经Kappa检验 ,CAD系统与放射科医生的检测结果一致性具有显著性意义 (Kappa肿块 =0 4 2 4 ,P肿块 =0 0 0 0 ;Kappa钙化 =0 36 5 ,P钙化 =0 0 13)。结论 CAD系统具有敏感性高、特异性较低的特点。在临床乳腺钼靶X线片的影像诊断中CAD系统可作为辅助检测工具
Objective To evaluate the clinical value of computer-aided detection (CAD) system in X-ray diagnosis of breast cancer. Methods A total of 136 cases of breast cancer molybdenum target radiographs were detected by CAD system. The results of CAD were statistically analyzed with the results of surgical pathology and compared with those of radiologists. Results The sensitivity of CAD system to microcalcification was 93 2% (4 1/4 4), specificity was 2 2 8% (2 1/92) and accuracy was 45 6% (6 2/136). CAD The sensitivity of the system to masses and structural disorders was 82 9% (10 7/129), specificity was 71 4% (5/7) and accuracy was 82 4% (112/136). Kappa test, CAD system and radiologist consistency test results were significant (Kappa mass = 0 4 2 4, P mass = 0 0 0 0; Kappa calcification = 0 36 5, P calcification = 0 0 13) . Conclusion CAD system has the characteristics of high sensitivity and low specificity. The CAD system can be used as an auxiliary detection tool in the diagnostic imaging of clinical mammograms