Meeting Banner
Abstract #4821

Design of multi-channel switching system for matrix coils

Huijun Yu 1 , Frank Huethe 2 , Sebastian Littin 1 , Feng Jia 1 , Jrgen Hennig 1 , and Maxim Zaitsev 1

1 Dept. of Radiology, Medical Physics, University Medical Center Freiburg, Freiburg, Germany, 2 Dept. of Clinical Neurology and Neurophysiology, University of Freiburg, Germany

We present a hardware design of multi-channel switches for a dedicated matrix gradient coil. The switching system is used to control the combination of the matrix coil elements. The system consists of a controller and a number of analog switches. The analog switches are designed to be placed in the immediate vicinity of the matrix coil elements inside the magnet bore. A timer circuit in combination with a current source charges the bootstrap capacitor periodically and generates the power supply for the floating driver output circuit. The realized setup for switching high currents switched correctly following the coil setting code. Due to its modular design, the number of channels can be customized in future systems by choosing the appropriate number of analog switches.

This abstract and the presentation materials are available to members only; a login is required.

Join Here