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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Related Experiment Video

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A MRI-Based Toolbox for Neurosurgical Planning in Nonhuman Primates
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Medical image encryption based on biometric keys and lower-upper decomposition with partial pivoting.

Xiaohui Wang, Zheng Zhu, Fan Wang

    Applied Optics
    |December 28, 2020
    PubMed
    Summary

    A novel asymmetric medical image encryption method uses iris patterns and 3D Lorenz chaos for enhanced security in telemedicine. This approach offers superior protection against occlusion attacks and expands the key space for secure medical data transmission.

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    Area of Science:

    • Medical Imaging
    • Cryptography
    • Optical Security

    Background:

    • Secure transmission of medical images is crucial for patient privacy in telemedicine.
    • Existing encryption methods face challenges in key space and vulnerability to attacks.

    Purpose of the Study:

    • To propose a new asymmetric medical image encryption scheme for telemedicine.
    • To enhance the security and robustness of medical image transmission.

    Main Methods:

    • Employing two spiral phase masks (SPM) generated from iris patterns, chaotic random phase masks, and amplitude truncated spiral phase transformation.
    • Utilizing lower-upper decomposition with partial pivoting for encryption.
    • Integrating asymmetric optical encryption with three-dimensional Lorenz chaos.

    Main Results:

    • The proposed scheme demonstrates improved security by incorporating iris patterns.
    • The combination of techniques significantly expands the key space and addresses limitations of double-random phase encoding.
    • The method shows advantages in resisting occlusion attacks, enhancing key space, correlation, and information entropy compared to existing schemes.

    Conclusions:

    • The developed asymmetric encryption scheme is feasible and robust for securing medical images in telemedicine.
    • The integration of iris biometrics and chaotic systems offers a promising direction for advanced medical image security.