High permittivity materials, in the form of “dielectric pads” are used in neuroimaging and body applications to improve B1+ homogeneity and intensity or to reduce corresponding SAR measures. In 3D, systematic pad design is computationally intensive with very long associated simulation times. We propose a hybrid solution to this problem by combining the flexibility of FDTD to model complex background configurations (coil/shield/subject) with an integral equation approach that takes the presence of a dielectric pad into account. This solution leads to speed up factors of 30 – 40 compared with conventional FDTD approaches and enables effective 3D dielectric pad design.
|Number of pages||1|
|Publication status||Published - 2016|
|Event||International Society for Magnetic Resonance in Medicine 24rd Annual Meeting & Exhibition - , Singapore|
Duration: 7 May 2016 → 8 May 2016
|Conference||International Society for Magnetic Resonance in Medicine 24rd Annual Meeting & Exhibition|
|Period||7/05/16 → 8/05/16|
Gemert, J. V., Brink, W., Webb, A., & Remis, R. F. (2016). An Efficient 3D RF Simulation Tool for Dielectric Shimming Optimization. 1148. Abstract from International Society for Magnetic Resonance in Medicine 24rd Annual Meeting & Exhibition, Singapore.