Lossless Medical Image Security

Security is the most important issue during transmission of medical images. As the medical images are sensitive so, it is necessary to protect them. Watermarking, digital fingerprint/signature, encryption, time of coding and encoding are the existing techniques for protecting images. But, all this methods have some drawbacks. Medical image security is an important issue when digital images and their pertinent patient information are transmitted across public networks. Picture archiving and communications system (PACS) is an integrated management system for archiving and distributing medical image data. Communication of medical images in a PACS environment is usually over the internal hospital network that is protected by a firewall from outside intruders. The paper outlines that the present methods, previous work, need for security and requirements for new system and presets an approach to further research for lossless medical image security.