Abstract #2695

An open-source, low-cost 8-channel transmit/receive 3T head coil for pTx developments, MR safety testing and standardization

Christoph Stefan Aigner¹, Mads Sloth Vinding², Lukas Winter¹, Reiner Montag¹, Sebastian Schmitter^1,3,4, Bernd Ittermann¹, and Frank Seifert¹

¹Physikalisch-Technische Bundesanstalt (PTB), Berlin and Braunschweig, Germany, ²Aarhus University, Center of Functionally Integrative Neuroscience (CFIN), Department of Clinical Medicine, Faculty of Health, Aarhus, Denmark, ³Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, ⁴University of Minnesota, Center for Magnetic Resonance Research, Minneapolis, MN, United States

Synopsis

Keywords: RF Arrays & Systems, New Devices

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.

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