Abstract #2128

A proton-free birdcage coil to enable zero-echo-time MRI without background signal

Markus Weiger¹, David Otto Brunner¹, Thomas Schmid¹, Romain Froidevaux¹, Manuela Barbara Rösler¹, Simon Gross¹, and Klaas Paul Pruessmann¹

¹Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland

MRI of tissues with very short T2s below 1 ms, such as bone, lung, or myelin is usually performed with 3D radial sequences with ultra-short or even zero TE. However, with these techniques also signals from hardware parts are detected, in particular from the RF coils. Especially the ZTE method is highly sensitive also to materials with extremely short T2 of tens of us. In this work, it is demonstrated how the undesired signal is avoided during coil design and production, presenting for the first time a birdcage coil which is virtually free of proton signal.

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