基于差影技术的乳腺微钙化点检测方法

目的 协助医生进行诊断，避免医生因大量阅片引起疲劳而造成误诊，提高乳腺癌早期诊断的效率和准确率。方法 先对乳腺钼靶X线照片数字化；再对数字化的乳腺影像归一化；然后从中选取感兴趣区域；最后利用差影技术检测出微钙化点并标示于影像中。结果 对于16幅（其中13幅含有微钙化）经过病理解剖确诊的乳腺钼靶片进行实验，利用本文方法共检测出14幅钙化图像。结论 该方法检出率高，微钙化点定位准确，值得进一步研究。

A Method of Microcalcification Detection in Digital Mammograms Based on Image Difference Technique

Objective:To avoid misdiagnosis because of doctors' fatigue caused by reading a large amount of films and to improve the efficiency and the accuracy of diagnosing the early cases of breast cancer.Methosd:Firstly mammograms were digitized;secondly digital images were normalized;thirdly some regions of interests were chosen from digital images;lastly microcalcifications were detected using difference technique and were marked in mammograms.Results:Sixteen mammograms were tested by this method,thirteen of them had been diagnosed to have microcalcification by pathological anatomy.Results showed that microcalcifications were detected in fourteen mammograms using this method.Conclusion:This method can achieve a true positive rate and microcalcifications were located well and truly.So the method is worth to be researched further.