To prevent medical image tampering, a team of researchers has created an alert system that uses digital watermarks to determine image authenticity.
“Medical images contain sensitive information, and when they are transmitted over the open network, they become vulnerable to corruption by noisy transmission channels and attacks by hackers or individuals with malicious intents,” co-author Chueh Loo Poh, Ph.D., said, according to AuntMinnie.
“These attacks may include obtaining private information about the patient, changing patient information in the image header, and tampering with the image pixel content.”
The scheme, Poh said, involves reversible watermarking that takes advantage of 3-D properties of volumetric medical images. Areas in such images that are tampered with will be highlighted when viewed.
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