Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
631-01-003 / 631-01-003 ISMRM Abstract

Quantification of Modeling Uncertainty for 7T Multi-Channel Transmit Arrays through Simulation–Measurement B1 Matching

Primary: Physics & Engineering - Safety
Secondary: Physics & Engineering - RF Arrays & Systems
631-01-003 · RF Coils · Thursday, 14 May, 8:30 AM–10:06 AM · Roof Terrace
631-01-003 · RF Coils · Thursday, 14 May, 8:30 AM–10:06 AM · Roof Terrace
Keywords: RF Safety Parallel Transmission (pTx) Safety Factor Local SAR Assessment Virtual Observation Points VOPs
Accepted
Ettore Flavio Meliado 1,2,3, Carel van Leeuwen4, Ali Anjum5, Andrew Fagan5, Martino Borgo1, Catalina Arteaga1
1Tesla Dynamic Coils BV, Zaltbommel, Netherlands
2Computational Imaging Group for MRI Therapy & Diagnostics, Center of Image Sciences, University Medical Center Utrecht, Utrecht, Netherlands
3Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands
4Tesla Dynamic Coils, Zaltbommel, Netherlands
5Department of Radiology, Mayo Clinic Rochester, Rochester, United States of America
Presenting Author: Ettore Flavio Meliado

Synopsis

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References

1. Malik SJ, Keihaninejad S, Hammers A, Hajnal J V. Tailored excitation in 3D with spiral nonselective (SPINS) RF pulses. Magn Reson Med. 2012;67(5):1303-1315.
2. Cloos MA, Boulant N, Luong M, et al. Amadon. kT-Points: Short Three-Dimensional Tailored RF Pulses for Flip-Angle Homogenization Over an Extended Volume. Magn Reson Med. 2012;67:72–80.
3. IEC 60601‐2‐33:2022, Medical electrical equipment—Part 2‐33: Particular requirements for the basic safety and essential performance of magnetic resonance equipment for medical diagnosis, International Standard, Edition 4.0.
4. Steensma BR, Sadeghi-Tarakameh A, Meliadò EF, et al. Tier-based formalism for safety assessment of custombuilt radio-frequency transmit coils. NMR in Biomedicine. 2023;36(5):e4874. doi:10.1002/nbm.4874 [doi]
5. de Greef, M., Ipek, O., Raaijmakers, A.J.E., Crezee, J. and van den Berg, C.A.T. (2013), Specific absorption rate intersubject variability in 7T parallel transmit MRI of the head. Magn Reson Med, 69: 1476-1485. https://doi.org/10.1002/mrm.24378. [doi]
6. Meliadò EF, van den Berg CAT, Luijten PR, Raaijmakers AJE. Intersubject specific absorption rate variability analysis through construction of 23 realistic body models for prostate imaging at 7T. Magn Reson Med. 2019; 81: 2106–2119. https://doi.org/10.1002/mrm.275183. [doi]
7. Steensma BR, Meliadò EF, Luijten P, Klomp DWJ, van den Berg CAT, Raaijmakers AJE. SAR and temperature distributions in a database of realistic human models for 7 T cardiac imaging. NMR in Biomedicine. 2021;34:e4525. https://doi.org/10. 1002/nbm.4525
8. Schmidt S, Ertürk MA, He X, Haluptzok T, Eryaman Y, Metzger GJ.Improved 1H body imaging at 10.5 T: Validation and VOP-enabled imaging in vivo with a 16-channel transceiver dipole array. Magn Reson Med. 2024;91:513-529. doi: 10.1002/mrm.29866 [doi]
9. Eichfelder G, Gebhardt M. Local specific absorption rate control for parallel transmission by virtual observation points. Magn Reson Med. 2011;66(5):1468-1476. doi:10.1002/mrm.22927. [doi]
10. Attardo EA et al. Field Synthesis in inhomogeneous media: Joint control of polarization, uniformity and SAR in MRI B1-Field, Progress In Electromagnetics Research, Vol. 118, 355-377,2011.

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/631-01-003