An RF Small Signal Unit Optimized for a 7T Multinuclear MR System
Bollenbeck J, Oppelt R, Hoecht P, Schnell W, Kroeckel H
Siemens AG Medical Solutions
The trend to increasing magnetic field strengths increases the demands on the Radio Frequency Small Signal Unit (RFSU) of the MR system. In this paper we focus on the impact of the increased frequency and dynamic range on the specific electrical requirements. The architecture of an RFSU used in a commercially available Siemens 7T System is presented and the implemented design features used to fulfill the tight specifications are described.