Application
Permanent magnet for MRI of the head and extremities
Contributors
Martin Häuer1
Tom O’Reilly2
Sebastian Schachel1
Wouter Teeuwisse2
Lukas Winter1
Estimated cost
10.000€
Progress
License: CERN OHL W v2
System Specifications
- Permanent magnet in “ROMA” (Rotation Optimized Magnet) array, which differs from previously used Halbach-based magnet designs (v1*) in that the orientation of the individual magnets inside the array no longer follow the strict Halbach definition but rather are optimized to maximize homogeneity
- 1936× (12×12×12)mm³ NdFeBr N52 magnets
- 384× (50×12×12)mm³ NdFeBr N52 magnets
- B0 ~ 50mT
- Weight ~100kg
- Bore = ø322mm × 428+14mm (with back plate, without gradients)
- outer dimensions (l×b×h) = (450×520×567)mm³ (with back plate, without gradients)
Publications
- O’Reilly, W.Teeuwisse, D.Gans, K.Koolstra, A.G.Webb. In vivo 3D brain and extremity MRI at 50 mT using a permanent magnet Halbach array. Magn.Reson.Med. 2020. DOI: 10.1002/mrm.28396
- Bart de Vos , Patrick Fuchs, Thomas O’Reilly, Andrew Webb and Rob Remis. Gradient Coil Design and Realization for a Halbach-Based MRI System, IEEE Transactions on Magnetics, 56, 3, 2020. DOI: 10.1109/TMAG.2019.2958561.
- O’Reilly, W.M.Teeuwisse and A.G.Webb, Three-dimensional MRI in a homogenous 27 cm diameter Bore Halbach Array Magnet, J Magn Reson. 2019 Oct;307:106578. doi: 10.1016/j.jmr.2019
Affiliations
1Physikalisch-Technische Bundesanstalt, Berlin, Germany
2Leiden University Medical Center (LUMC), Leiden, Netherlands