In today's multimedia world, everything has got digital around us. Even in medical application the traditional diagnosis is replaced by e-diagnosis. Nowadays, transmission of digitized medical information has become very easy due to the availability and generality of internet. However the digital form of these images can easily be manipulated and degraded. The problem of copyright protection and medical security poses a big challenge to privacy protection using watermarking techniques. This paper presents a framework on digital watermarking as an effective technology to protect property rights and limit the distribution of multimedia data. In this paper a CT scan of head is taken as cover image in which the patient's detail and doctor's detail together taken as a watermark and encoded by coding technique called EBCDIC coding technique to enhance the robustness of proposed method. The scheme is blind so that the EPR(Electronic patient record) can be extracted from the medical image without the need of original image. Therefore proposed method is useful for telemedicine applications. The performance of different techniques is evaluated by considering the correlation factor for exact recovery of watermark and PSNR for perfect reconstruction of watermarked image. High value of PSNR indicates better reconstruction of medical image.

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