Travelling Wave Systems
The main goal of this project is to investigate the installation of travelling wave systems on a 9.4T whole-body MR-PET scanner. Given the absence of a body coil, the integrated radio-frequency screen is employed as a circular waveguide. The length and the inner diameter of the screen are 1220 mm and 684 mm, respectively. For an air-filled circular waveguide with these dimensions, the dominant TE11- and the TM01-mode can be excited. In contrast to the default signal excitation and reception with one or multiple radio-frequency resonators, the signal excitation and reception should be done with travelling waves. Thus, new excitation devices, e.g., antennas, are required. The first prototype of an excitation device designed in-house is a circular polarised patch antenna.
Test of different patch positions relating to the waveguide:
- variation of the coupled power
- variation of the coupled power
- SAR distribution in different loads (see Fig.1)
Multi-mode excitation and reception:
- development and realisation of new excitation devices
- Use of pTX hardware
Gruppenleiter
- Institute of Neurosciences and Medicine (INM)
- Medical Imaging Physics (INM-4)
Room R 114