Conference paper
Calibrated Coil Combination for Fixed-Geometry, Low-Frequency Coils with Application to Hyperpolarized 13C Measurements
Magnetic Resonance, Department of Health Technology, Technical University of Denmark1
Department of Health Technology, Technical University of Denmark2
Center for Hyperpolarization in Magnetic Resonance, Centers, Technical University of Denmark3
Aarhus University4
Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark5
Department of Electrical Engineering, Technical University of Denmark6
We explore a new design approach for low frequency RF coils, where a transmit and receive array are built together in a totally rigid frame, and therefore their B and B distributions can be accurately mapped and used as prior information for SNR-optimal combination of signals from different coil elements.
Using this principle, a coil is designed for C MRS of a pig at 3T (32.13 MHz). We show that at this frequency, the effect of sample loading is minimal, and the prior information obtained in phantoms benefits in-vivo experiments. This one-time calibration allows for optimal combination of coil signals, which is also expected to improve parallel imaging performance.
| Language: | English |
|---|---|
| Year: | 2019 |
| Proceedings: | ISMRM 27th Annual Meeting & Exhibition |
| Types: | Conference paper |
| ORCIDs: | Sánchez, Juan Diego , Hansen, Rie Beck , Johansen, Daniel Højrup , Zhurbenko, Vitaliy , Hanson, Lars G. and Ardenkjær-Larsen, Jan Henrik |
