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Image-Based Generative Artificial Intelligence in Radiology: Comprehensive Updates.

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Summary

Generative artificial intelligence (AI) can create medical images for training AI models. This review explores AI image generation methods, evaluation techniques, and clinical applications in radiology, including potential issues like hallucinations.

Keywords:
Diffusion modelsEvaluation metricsGenerative adversarial networksGenerative artificial intelligenceMedical imaging

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Area of Science:

  • Medical Imaging
  • Artificial Intelligence
  • Radiology

Background:

  • Generative artificial intelligence (AI) is increasingly used in medical imaging for tasks like image enhancement and data augmentation.
  • Image-generative AI produces large datasets for deep learning, but evaluation methods and clinical utility require thorough review.

Purpose of the Study:

  • To review basic theories of image-generative AI, focusing on generative adversarial networks and diffusion models.
  • To discuss methods for evaluating AI-generated medical images.
  • To outline the clinical and research utility of these images in radiology and address the issue of AI hallucinations.

Main Methods:

  • Review of commonly used generative adversarial networks and diffusion models in medical imaging.
  • Summary of AI-generated image utility in clinical radiology tasks: direct image use, lesion detection, segmentation, and diagnosis.
  • Discussion of evaluation methodologies and the phenomenon of AI hallucinations.

Main Results:

  • Generative AI models like GANs and diffusion models offer significant potential for medical image analysis and data augmentation.
  • Applications in radiology include image quality improvement, lesion detection, segmentation, and diagnostic support.
  • Challenges remain in robust evaluation and understanding AI-generated image artifacts, particularly hallucinations.

Conclusions:

  • Image-generative AI presents a powerful tool for advancing radiology research and practice.
  • Standardized evaluation methods are crucial for ensuring the reliability and clinical translation of AI-generated images.
  • Addressing AI hallucinations is essential for safe and effective clinical implementation.