Dual Frequency Litzcage Volume Coil for 1H/19F
A Simple-tune Preclinical RF resonator for MR Imaging:
- Efficient, easy to tune and match over a broad range of sample loading.
- Each channel for TxRx and linearly polarized.
- For observe / decouple – with both channels used simultaneously.
- For interleaved acquisitions – with each channel used sequentially.
- Robust design and mechanical stability.
Figure 1. Doty Dual Frequency 32 mm 1H/19F Litzcage module for 9.4 T Bruker imager. Shown with user incorporated animal bed.
Figure 2. 9.4 T 1H and 19F images of tubes of water, Isoflurane, and Galden™ PFPE (perfluoropolyether) phantoms. Accordingly, the water sample is bright in the 1H scan and invisible on the 19F channel; Isoflurane, with a mixture of 19F and 1H, is visible on both channels; the 100% fluorinated PFPE is invisible on the 1H channel and bright on the 19F channel. Note that the artifacts/ghosting effect appearing for the PFPE tube is not from the coil, but rather is due to multiple 19F resonance frequencies (and a large 19F chemical shift) which causes multiple (ghost-like) images. Localization is excellent on both channels.
Doty Scientific would like to thank the following researchers for sharing their results:
Herrmann K-H 1*, Pechmann N 1,2, Reichenbach JR 1,
1 Medical Physics Group, IDIR, University Hospital Jena – Friedrich-Schiller University, Jena, Germany.
2 University of Applied Sciences “Ernst Abbe”, Dept. of Medical Technology and Biotechnology, Jena, Germany.
*corresponding author
