Siyamol Chirakkarottu* and Sheena Mathew Pages 73 - 88 ( 16 )
Background: Medical imaging encloses different imaging techniques and processes to image the human body for medical diagnostic and treatment purposes. Hence it plays an important role to improve public health. The technological development in biomedical imaging specifically in X-ray, Computed Tomography (CT), nuclear ultrasound including Positron Emission Tomography (PET), optical and Magnetic Resonance Imaging (MRI) can provide valuable information unique to a person.
Objective: In health care applications, the images are needed to be exchanged mostly over a wireless medium. The diagnostic images with confidential information of a patient need to be protected from unauthorized access during transmission. In this paper, a novel encryption method is proposed to improve the security and integrity of medical images.
Methods: Chaotic map along with DNA cryptography is used for encryption. The proposed method describes a two-phase encryption of medical images.
Results: The performance of the proposed method is also tested by various analysis metrics. The robustness of the method against different noises and attacks is analyzed.
Conclusion: The results show that the method is efficient and well suitable for medical images.
Medical images, chaotic encryption, 2D Zaslavski map, DNA cryptography, histogram analysis, robustness test.
School of Engineering, Cochin University of Science & Technology, Kochi, Kerala, School of Engineering, Cochin University of Science & Technology, Kochi, Kerala