School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore.
J Digit Imaging. 2011 Jun;24(3):528-40. doi: 10.1007/s10278-010-9295-4.
Teleradiology applications and universal availability of patient records using web-based technology are rapidly gaining importance. Consequently, digital medical image security has become an important issue when images and their pertinent patient information are transmitted across public networks, such as the Internet. Health mandates such as the Health Insurance Portability and Accountability Act require healthcare providers to adhere to security measures in order to protect sensitive patient information. This paper presents a fully reversible, dual-layer watermarking scheme with tamper detection capability for medical images. The scheme utilizes concepts of public-key cryptography and reversible data-hiding technique. The scheme was tested using medical images in DICOM format. The results show that the scheme is able to ensure image authenticity and integrity, and to locate tampered regions in the images.
远程放射学应用和基于网络技术的患者记录的普遍可用性正迅速变得重要起来。因此，当图像及其相关的患者信息通过公共网络（如互联网）传输时，数字医学图像安全已成为一个重要问题。健康保险流通与责任法案等健康法规要求医疗服务提供者采取安全措施，以保护敏感的患者信息。本文提出了一种具有篡改检测能力的完全可逆的双层数字水印方案，用于医学图像。该方案利用公钥密码学和可逆数据隐藏技术的概念。该方案使用 DICOM 格式的医学图像进行了测试。结果表明，该方案能够确保图像的真实性和完整性，并定位图像中的篡改区域。
