High field MRI coils are often based on transmission line resonators. Due to relatively short wavelength of RF fields, such coils produce uneven field patterns. Here we show, that it is possible to manipulate magnetic field patterns of microstrip resonators in both planes (sagittal and transverse) segmenting stripe and ground plane of the resonator with series capacitors. The design equations for capacitors providing symmetric current distribution are derived. The performance of two types of segmented resonators are investigated experimentally. To authors’ knowledge, a microstrip resonator, where both, strip and ground plane are capacitor-segmented, is shown here for the first time.
|Title of host publication||Proceedings of the International Society for Magnetic Resonance in Medicine|
|Number of pages||4|
|Publisher||The International Society for Magnetic Resonance in Medicine|
|Publication status||Published - 2017|
|Event|| ISMRM 25th Annual Meeting & Exhibition - Hawai'i Convention Center, Honolulu, United States|
Duration: 22 Apr 2017 → 27 Apr 2017
|Conference||ISMRM 25th Annual Meeting & Exhibition|
|Location||Hawai'i Convention Center|
|Period||22/04/2017 → 27/04/2017|
Zhurbenko, V., Boer, V., & Petersen, E. T. (2017). Microstrip Resonator for High Field MRI with Capacitor-Segmented Strip and Ground Plane. In Proceedings of the International Society for Magnetic Resonance in Medicine The International Society for Magnetic Resonance in Medicine.