8-channel pTx headcoil for 3T
Description
This work investigates an open-source, low-cost, 8-channel transmit/receive head coil to enable rapid and reproducible pTx development, safety assessment and evaluation at 3T. FDTD simulations were validated with phantom measurements on a 3T with an external pTx system. Relative and absolute 2D/3D B1+-maps were acquired to compute the CP+ mode, and two RF shims were tailored to enforce B1+ efficiency and homogeneity. The open-access design files could serve as a basis for new RF coil designs or pTx projects without needing high expertise in RF coil development or as a cost-effective alternative for multi-centre studies.
RF coil specifications
- 8-channel transmit/receive
- f=128MHz
- inner dimensions: 22x20cm
- B1+ efficiency: about 35µT/sqrt(kW) in the center (CP+ mode)
Contacts
| Name | Institution | Applications | |
|---|---|---|---|
| Christoph Aigner | christoph.aigner@ptb.de | Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany | parallel transmission imaging techniques |
| Frank Seifert | frank.seifert@ptb.de | Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany | pTx and implant safety |
| Lukas Winter | lukas.winter@ptb.de | Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany | implant safety, open source hardware distribution |
| Mads Sloth Vinding | msv@cfin.au.dk | Center of Functionally Integrative Neuroscience (CFIN), Aarhus University, Denmark | RF pulse design |
Contributors (alphabetical order)
Christoph Aigner, Bernd Ittermann, Reiner Montag, Sebastian Schmitter, Frank Seifert, Mads Sloth Vindin, Lukas Winter
Publications
If you find this useful in your work, please cite: Aigner, CS, Vinding, MS, Winter, L, Montag, R, Schmitter, S, Ittermann, B and Seifert, F. An open-source, low-cost 8-channel transmit/receive 3T head coil for pTx developments, MR safety testing and standardization, submitted to ISMRM 2023, Toronto, Canada.
Acknowledgments
This work has received funding from the German Research Foundation (SCHM 2677/4-1, GRK2260), VILLUM FONDEN and the European Partnership on Metrology, co-financed by the European Union's Horizon Europe Research and Innovation Programme and by the Participating States, under grant number 21NRM05 STASIS.
This work is supported by the Open Source Imaging Initiative (OSI²), https://www.opensourceimaging.org/ (hier kann später der Projektlink rein, wenss bei OSI geuploaded ist)
License and Liability
Please check the DISCLAIMER.pdf