day1 sem1 8
summary
An open‑source full MRI prototype exists that images heads and extremities at 55 mT field with a ~30 cm bore, runs on 12 V and can be battery powered, and uses stacked permanent magnet rings plus a Python-based shimming workflow. Material cost is about €20–30k (€24k shipped to Uganda), image examples show knee and brain lesions, and 21 builds are underway across 14 countries. Major limits: manual temperature calibration, need for radiologists, and ongoing clinical benchmarking.
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chapters (10)
- 0:00Introduction and speaker background
- 1:27MRI scanner oligopoly and open source need
- 2:31First open-source MRI scanner prototype
- 6:05Magnet technology and cost reduction
- 8:11Project history and community growth
- 13:27First clinical deployment in Leiden
- 16:55Governance and nonprofit structure
- 19:49Democratic technology and governance model
- 22:55Open source reference technology proposal
- 25:26Q&A session
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