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Computed Tomography01:10

Computed Tomography

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.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...

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A variable dimensional chaotic map-based medical image encryption algorithm with multi-mode.

Bin Zhang1,2, Bahbibi Rahmatullah3, Shir Li Wang2

  • 1School of Computer Science, Baoji University of Arts and Sciences, Baoji, China.

Medical & Biological Engineering & Computing
|August 5, 2023
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Summary
This summary is machine-generated.

This study introduces a novel medical image encryption algorithm with two modes for secure telemedicine. The semi-full mode offers a balance of speed and security, ideal for urgent medical needs.

Keywords:
COVID-19Chaotic mapMedical image encryptionSelective/partial encryption

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Area of Science:

  • Medical Imaging
  • Information Security
  • Telemedicine

Background:

  • Telemedicine adoption surged post-COVID-19, increasing reliance on secure medical image transmission.
  • Existing full medical image encryption methods are slow and unsuitable for emergencies.
  • Partial encryption methods lack sufficient security.

Purpose of the Study:

  • To develop an efficient and secure medical image encryption algorithm adaptable to various telemedicine scenarios.
  • To address the limitations of existing encryption techniques in terms of speed and security.

Main Methods:

  • Designed an improved variable dimension map based on the Logistic map.
  • Proposed a dual-mode encryption algorithm: full encryption and semi-full encryption.
  • Implemented integrity verification for medical images in both modes.

Main Results:

  • The semi-full encryption mode demonstrated good security with reduced time consumption.
  • The full encryption mode provided enhanced security with acceptable processing time.
  • Both modes successfully incorporated medical image integrity verification.

Conclusions:

  • The proposed algorithm offers flexible and secure solutions for medical image encryption in telemedicine.
  • The dual-mode approach effectively balances security and efficiency for different medical contexts.