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Related Experiment Videos

Melanoma detection using adversarial training and deep transfer learning.

Hasib Zunair1, A Ben Hamza1

  • 1Concordia University Montreal QC Canada.

Physics in Medicine and Biology
|April 7, 2020
PubMed
Summary
This summary is machine-generated.

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Skin Cancer01:30

Skin Cancer

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Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
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This study introduces a novel two-stage framework to improve melanoma detection by synthesizing under-represented skin lesion images. The method enhances classification accuracy, potentially matching expert dermatologist performance.

Area of Science:

  • Medical Imaging
  • Artificial Intelligence in Dermatology
  • Computational Pathology

Background:

  • Skin lesion datasets suffer from class imbalance, with few abnormal samples compared to normal ones.
  • Low inter-class variability in skin lesion images complicates accurate classification.
  • Accurate melanoma detection is crucial for early diagnosis and improved patient outcomes.

Purpose of the Study:

  • To propose a two-stage framework for automatic skin lesion image classification.
  • To address class imbalance and low inter-class variability in skin lesion datasets.
  • To enhance the accuracy of melanoma detection through advanced machine learning techniques.

Main Methods:

  • A two-stage framework combining adversarial training and transfer learning for melanoma detection.

Related Experiment Videos

  • Stage 1: Conditional image synthesis using unpaired image-to-image translation to generate under-represented class samples.
  • Stage 2: Training a deep convolutional neural network classifier with original and synthesized data, using focal loss to handle hard examples.

    • Main Results:

    • The proposed approach significantly outperformed standard baseline methods on a dermatology image benchmark.
    • Achieved substantial performance improvements in skin lesion classification accuracy.
    • Feature visualization indicated context-based lesion assessment capabilities comparable to expert dermatologists.

    Conclusions:

    • The novel two-stage framework effectively addresses class imbalance and low inter-class variability in skin lesion datasets.
    • The method demonstrates superior performance in automatic skin lesion classification and melanoma detection.
    • The approach shows potential for aiding dermatologists in lesion assessment, reaching expert levels of accuracy.