  Medical image encryption could aid in preserving patient privacy. In this
article, we provide a chaotic system-based medical picture encryption method.
The diffusion and permutation architecture was used. The permutation based on
plain image and chaotic keys is offered to shuffle the plain picture's pixels
to other rows and columns, weakening the strong connections between neighboring
pixels. Diffusion is suggested to spread small changes of plain images to all
of the pixels in cipher images to enhance the encryption effect. We analyze the
chaotic behavior of the proposed system using various techniques and tests such
as bifurcation plots, Lyapunov exponents, MSE, PSNR tests, and histogram
analysis.
