A MICCAI 2023 Tutorial.

Animation based on [2]

News

• 2023-10-09: Slides available here.
• 2023-10-08: Thank you everyone who contributed to the tutorial! We had a great time and we hope you did too! We will be uploading the slides and the code soon. Stay tuned!
• 2023-10-01: Tutorial location: Vancouver Convention Center East Building Level 1 - Meeting Room 8.
• 2023-07-30: The tutorial will happen on 8 October 2023 - Sunday afternoon (PM).
• 2023-03-14: The tutorial Diffusion Models for Medical Imaging has been ACCEPTED for MICCAI 2023!

Outline

Generative models have advanced rapidly in recent years, enabling the creation of high-quality synthetic data across images, volumes, and other complex data types. Diffusion models, in particular, have become a powerful framework for medical image generation, reconstruction, denoising, segmentation, anomaly detection, and related tasks.

This tutorial presents an overview of generative modelling with a focus on diffusion models, including theory, practical training heuristics, and representative applications in medical imaging. It also includes a hands-on session built on the open-source MONAI generative models library.

Figure from [1]

Tutorial Schedule

1. Introduction [60 mins]

• Introduction to generative models
• Diffusion models theory
• Denoising diffusion probabilistic models
• Training and Inference
• MONAI Generative Models: Introduction and DEMO Coding tutorial on DDPM

2. Advanced Topics [60 min]

• Schedulers: How to accelerate sampling? Deterministic Sampling
• Conditioning: Classifier Guidance; Classifier-free Guidance; Super-resolution; Inpainting; Others.
• MONAI Generative Models: DEMO on Classifier-free guidance

3. Coffee break (30mins)

4. Applications in medical imaging [60 mins]

• Synthesis
• Reconstruction
• Segmentation
• Anomaly Detection
• Miscellaneous

5. Round table [60 mins]

• Trends and open challenges
• Round table (We invite experts in the field to join the discussion)
• Q&A

Learning Objectives

1. Understand the differences between implicit vs explicit likelihood generative models
2. Understand the intuition and theory behind diffusion models
3. Appreciate and learn different applications of diffusion models in medical image analysis and imaging
4. Appreciate current limitations of diffusion models
5. Learn how to use MONAI Generative Models to train and use diffusion models

Organizing Team

• Mr. Pedro Sanchez is a PhD student at the University of Edinburgh

• Dr. Walter H L Pinaya is a research fellow at the Department of Biomedical Engineering at the King’s College London.

• Dr. Julia Wolleb is a postdoctoral researcher at the Department of Biomedical Engineering at the University of Basel.

• Prof Dorit Merhof is Chair in Image Analysis and Computer Vision with the University of Regensburg (UR), Germany.

• Prof. Jorge Cardoso is a Reader in Artificial Medical Intelligence at King’s College London. Jorge is also the CTO of the new London Medical Imaging and AI Centre for Value-based Healthcare.

• Prof Sotirios A. Tsaftaris is the Canon Medical / Royal Academy of Engineering Research Chair in Healthcare AI with the University of Edinburgh, United Kingdom.

Some Resources

1. Kazerouni, Amirhossein, et al. “Diffusion models for medical image analysis: A comprehensive survey.” arXiv preprint arXiv:2211.07804 (2022).
2. Pinaya, Walter HL, et al. “Brain imaging generation with latent diffusion models.” Deep Generative Models: Second MICCAI Workshop, DGM4MICCAI 2022 (2022).
3. https://github.com/heejkoo/Awesome-Diffusion-Models is a useful GitHub repository tracking recent diffusion-model papers.