469-02-001 ISMRM Abstract

Design and Construction of Gradient Coils for Low-field Halbach Array Scanners using the Discrete Wire Method

Primary: Physics & Engineering - Gradients

Secondary: Physics & Engineering - Low-Field MRI

469-02-001 · Low Field Applications and Systems · Tuesday, 12 May, 9:15 AM–10:10 AM · Digital Posters Row J

Keywords: Gradients Animal MRI Halbach Local Gradient Coils Low field

Accepted

Haile B Kassahun ^1,2, Nayebare Maureen³, Timon Machtelinckx, Sipan Hovsepian⁴, Ali Akbarzadeh-Sharbaf¹, Guillermo Sahonero-Alvarez^5,6,7, Marina Fernández-García^8,9, David O Rodriguez-Duarte¹⁰, Mayinja W Bob¹¹, Ihssene Brahimi¹², Kidist Kebede¹³, Jennifer X Mifatu¹⁴, Maruf Adewole^15,16, Confidence Raymond¹, Pedram Yazdanbakhsh¹, Johnes Obungoloch¹¹, Osama Abdullah⁴, Stefan du Plessis¹⁷, Udunna Anazodo^1,2,15

¹McGill University, Montreal, Canada

²Montreal Neurological Institute, Montreal, Canada

³Biological and Biomedical Engineering, McGill University (MIND LAB), Montreal, Canada

⁴New York University Abu Dhabi, Abu Dhabi, United Arab Emirates

⁵Institute for Biological and Biomedical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile

⁶Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile

⁷Millennium Institute for Intelligent Healthcare Engineering - iHEALTH, Santiago, Chile

⁸MRILab, Institute of Instrumentation for Molecular Imaging (i3M) CSIC-UPV, Valencia, Spain

⁹Consortium for Advancement of MRI Education and Research in Africa, Canada

¹⁰Politecnico di Torino, Torino, Italy

¹¹MBARARA UNIVERSITY OF SCIENCE AND TECHNOLOGY, MBARARA, Uganda

¹²École de technologie supérieure, Montreal, Canada

¹³Addis Ababa University, Addis Ababa, Ethiopia

¹⁴Euracare Multi Specialist Hospital Accra, Ghana, Accra, Ghana

¹⁵Medical Artificial Intelligence Laboratory (MAI Lab), Lagos, Nigeria

¹⁶Department of Radiology, University of Pennsylvania, Philadelphia, United States of America

¹⁷Stellenbosch University, Stellenbosch, South Africa

Presenting Author: Haile B Kassahun

Synopsis

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References

1. Sarty GE, Vidarsson L, Hansen C, Corrigal K, Sutherland L, Jamieson M, Hogue M, Kassahun H, Greyeyes W, Teixeira D, Goertzen L, McEvoy J, and Pollard M. Learning to build low-field MRIs for remote northern communities., Front. Neuroimaging, 2025; Vol 3, pp. 1521517.

2. Obungoloch J, et al. On-site construction of a point-of-care low-field MRI System in Africa, NMR Biomed. 2023; Vol. 36, pp. 1–10.

3. de Vos B, Fuchs P, O’Reilly T, Webb A, and Remis R. Gradient Coil Design and Realization for a Halbach-Based MRI System. IEEE Transactions on Magnetics. 2020; Vol. 56, No. 3.

4. Kassahun HB, Alsharafi SS, Badawi AM, El-Sharkawy AM. Towards a more power-efficient two-channel biplanar z-gradient coil design using the target field method. In the proceedings of the 29th annual meeting of ISMRM and SMRT, April. 30, 2021. p. 3097.

5. Kassahun HB, Alsharafi SS, Badawi AM, El-Sharkawy AM. A Power Efficient Actively Shielded Two-channel Transverse MRI Gradient Coil Numerical Design. Journal of Magnetic Resonance. 2023. Vol. 354, pp. 107526.

6. Wang Y, Liu F, Zhou X, Crozier S. Design of Transverse Head Gradient Coils Using a Layer-sharing Scheme. J Magn Reson. 2017; 278:88-95.

7. Hovsepian, S. (2025). Field Mapper Robot: Design of modular, cost-effective field mapper robot [GitHub repository]. GitHub. Retrieved October 29, 2025, from https://github.com/SipanHovsep/Field_mapper_robot

8. O’Dell WG, Schoeniger JS, Blackband SJ, McVeigh ER, A modified quadrupole set to use in high-resolution MRI tagging. Mag Reson. Med. 1994; Vol. 32(2), PP. 246-250.

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http://echo.ismrm.org/p/ISMRM2026/469-02-001