Novel multi-tuned RF coil/antenna designs

1H/31P Human head coil

For more detailed information see S.-M. Hong, C.-H. Choi, N.J. Shah, J. Felder, 2019, Design of a double-resonant helmet coil for 1H/31P at 3T MRI, Phys. Med. Biol., 64, pp. 035003.Simulation model showing the probe configuration: (a, b) simulation model of quadrature bent dipole antenna and four-loop 31P coil with phantom and head mesh, (c) simulation model of single-tuned birdcage coil, (d) photo of quadrature bent dipole antenna and four-loop 31P array, (e) schematic of bent dipole antenna, (f) the 2D representation of the four-loop 31P array, (g) block diagram of the RF interface.

For more detailed information see: S.-M. Hong, C.-H. Choi, A.W. Magill, N.J. Shah, J. Felder, 2018, Design of a quadrature 1H/31P coil using bent dipole antenna and 4-channel loop at 3T MRI, IEEE Trans. Med. Imaging, 37, pp. 2613-2618.

1H/23Na Animal coil

Photographs, dimensions and schematic diagram of (a) the proposed 90° four-ring double-tuned birdcage coil, (b) the single-tuned 1H and 23Na birdcage coil, (c) the large four-ring birdcage coil.

For more detailed information see: Y. Ha1, C.-H. Choi1, W. Worthoff, A. Shymanskaya, M. Schöneck, A. Willuweit, J. Felder and N.J. Shah, 2018, Design and in vivo use of a folded four-ring double-resonant quadrature birdcage coil for rat brain sodium imaging at 9.4T, J. Magn. Reson., 286, pp. 110-114.

A schematic diagram containing component values of a quadrature-enhanced dual-tuned coil (a), a photo of the double-tuned coil assembled with an animal bed and a phantom (b).

For more detailed information see: Y. Ha1, C.-H. Choi1, N.J. Shah, 2018, Development and implementation of a PIN-diode controlled, quadrature-enhanced, double-tuned RF coil for sodium MRI, IEEE Trans. Med. Imaging, 37, pp. 1626-1631.

1H/19F Animal coil

Photograph (left) of an actively switchable 1H/19F double-tuned quadrature surface coil and its equivalent circuit diagram (right) including component values.

For more detailed information see: 5. C.-H. Choi, S. Hong, Y. Ha and N.J. Shah, 2017, Design and construction of a novel 1H/19F double-tuned coil system using PIN-diode switches at 9.4T, J. Magn. Reson., 279, pp.11-15.

Contact

Dr Chang-Hoon Choi

• Institute of Neurosciences and Medicine (INM)
• Medical Imaging Physics (INM-4)

Building 15.14 /
Room 115

+49 2461/61-1921

E-Mail

Dr Suk Min Hong

• Institute of Neurosciences and Medicine (INM)
• Medical Imaging Physics (INM-4)

Building 15.14 /
Room R 111

+49 2461/61-1922

E-Mail