An optimized Metamaterial line resonator element for a Metamaterial imaging RF coil is developed for the ultrahigh field MRI systems. The coil element performance is compared to that of the transmission line (microstrip)  and the dipole [2,5] coil elements for the 10.5T MRI with a Larmor frequency of 447 MHz. Good penetration into the test phantom is observed for the Metamaterial element with negligible change in the resonance condition and the Q-factor (∼70) after loading. Images of a cylindrical phantom are obtained in the 10.5T Siemens MRI system with proposed metamaterial line element and the dipole element  are compared to validate the performance. A 48-cm metamaterial line is simulated to show the extendibility of the line beyond half a wavelength while maintaining the homogeneous field distribution.
|Original language||English (US)|
|Title of host publication||2017 1st IEEE MTT-S International Microwave Bio Conference, IMBioC 2017|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - Jun 30 2017|
|Event||1st IEEE MTT-S International Microwave Bio Conference, IMBioC 2017 - Gothenburg, Sweden|
Duration: May 15 2017 → May 17 2017
|Name||2017 1st IEEE MTT-S International Microwave Bio Conference, IMBioC 2017|
|Other||1st IEEE MTT-S International Microwave Bio Conference, IMBioC 2017|
|Period||5/15/17 → 5/17/17|
Bibliographical noteFunding Information:
This project is funded in part by NIH NIH-EB0006835 and in part by the University of Minnesota.
© 2017 IEEE.
Copyright 2017 Elsevier B.V., All rights reserved.
- MRI imaging
- Metamaterial line
- dipole antenna
- microstrip line
- ultra-high magnetic fields