基于混合技术的EMR系统医学信息保护

Medical Information Protection of EMR System Based on Hybrid Technology

随着电子病历记录(EMR)系统在诸多医院的广泛使用,医生可以利用计算机云交互和共享医学数据,并通过下一代临床决策支持系统提取医学记录信息,从而做出精确诊断。为解决EMR系统传输过程中的医学信息泄露或纂改问题,将EMR系统中经过B++编码后的医学数据嵌入到病人的指纹中,通过基于非下采样Contourlet变换的数字水印算法,提取含有特征结构信息和注册密钥的指纹,并将其嵌入到病人的医学图像中,提高EMR系统医学信息的安全性。实验结果表明,该方法实现的医学水印图像具有较高的鲁棒性,并且由于允许高容量的医学信息嵌入,保证了医学数据的完整性。

As the Electronic Medical Records（EMR） system is widely used in many hospitals, doctor can use computer to cloud interaction and share medical data. It extracts the medical record information by Clinical Decision Support Systems（CDSS）, and helps doctor to make accurate diagnosis. To solve the problem of medical information disclosure or tamper in the transmission process of EMR system, medical data after B＋＋ encoding is embedded in a patient＇s finger. The finger with feature information and registration key are embedded in medical image by digital watermarking algorithm based on Non-subsampled Contourlet Transform（NSCT）, and it can improve the safety of medical information in EMR system. Experimental results show that the method ensures higher robustness of the watermarking image, and it protects the integrity of the medical data by embedding high capacity medical information.