Researcher

Sebastien Ourselin

Also known as Sébastien Ourselin, Sebastien Ourselin A

Sebastien Ourselin is a medical imaging researcher whose work applies image registration and deep learning to clinical imaging. In 2002, he coauthored a MICCAI paper on robust, real-time multimodal registration; in 2017, he coauthored NiftyNet, a deep-learning platform for medical imaging. He joined King’s College London as Head of the School of Biomedical Engineering & Imaging Sciences in 2018. He became a Fellow of the Academy of Medical Sciences in 2023 and took up King’s fractional Assistant Principal (Innovation) role in March 2025, while directing digital health work at King’s Health Partners. His 2026 work applies SAM2 to intraoperative OCT video segmentation, and as of October 2026 he is Head of the School of Biomedical Engineering & Imaging Sciences at King’s College London.

Works
1,993
Citations
77,093
h-index
122

Publication numbers from OpenAlex, as of 15 October 2026.

Timeline

  1. 2002

    Robust image registration

    In 2002, he coauthors the MICCAI paper “Robust registration of multi-modal images: towards real-time clinical applications.”

  2. 2017

    NiftyNet for medical imaging

    In 2017, he coauthors NiftyNet, a modular deep-learning pipeline for medical imaging that supports segmentation, regression, image generation, and representation learning.

  3. 2018

    Head of School at King’s

    In 2018, he joins King’s College London as Head of the School of Biomedical Engineering & Imaging Sciences after leading translational imaging work at UCL.

  4. 2023

    An Academy fellowship

    He is elected a Fellow of the Academy of Medical Sciences in 2023; his engineering work includes medical image registration, segmentation, and classification.

  5. March 2025

    Innovation role at King’s

    In March 2025, he takes up King’s fractional Assistant Principal (Innovation) role. His other director roles include the London Institute for Healthcare Engineering and King’s Health Partners’ Digital Health and Data Sciences work.

  6. 2026

    SAM2 for intraoperative OCT

    In 2026, he coauthors work on cross-domain self-prompting with SAM2 for intraoperative OCT video segmentation.

  7. As of October 2026

    School leadership at King’s

    As of October 2026, he is Head of the School of Biomedical Engineering & Imaging Sciences at King’s College London.

Sources and credits

Photo: We have no published photo of Sebastien Ourselin yet. Send us a free-licensed photo.

  1. Publications of Sébastien Ourselin www-sop.inria.fr. Checked 15 October 2026.
  2. [1709.03485] NiftyNet: a deep-learning platform for medical imaging arxiv.org. Checked 15 October 2026.
  3. First day for our new head of School Professor Sebastien Ourselin kcl.ac.uk. Checked 15 October 2026.
  4. Professor Sebastien Ourselin elected as new Fellow of the Academy of Medical Sciences kcl.ac.uk. Checked 15 October 2026.
  5. Professor Sebastien Ourselin appointed Assistant Principal (Innovation) kcl.ac.uk. Checked 15 October 2026.
  6. Sebastien Ourselin - King's College London kclpure.kcl.ac.uk. Checked 15 October 2026.