Auxiliary PTx system for active control of induced RF currents in conductive guidewires

TY - CHAP

T1 - Auxiliary PTx system for active control of induced RF currents in conductive guidewires

AU - Godinez, Felipe

AU - Hajnal, Joseph Vilmos

AU - Malik, Shaihan Jalal

PY - 2019

Y1 - 2019

N2 - The risk of RF-induced currents makes use of electrically conductive guidewires for cardiac catheterization procedures potentially unsafe for MRI. By using a parallel transmit coil array (PTx) system it is possible to generate RF field modes that can be utilized for safe imaging, and also guidewire visualization. As the induced RF currents can change with the guidewire position and operator handling, the control modes become a moving target. In this work we present an actively controlled PTx system that enables safe operation during a procedure in which electrical conditions are changing, and demonstrate this experimentally.Introduction

AB - The risk of RF-induced currents makes use of electrically conductive guidewires for cardiac catheterization procedures potentially unsafe for MRI. By using a parallel transmit coil array (PTx) system it is possible to generate RF field modes that can be utilized for safe imaging, and also guidewire visualization. As the induced RF currents can change with the guidewire position and operator handling, the control modes become a moving target. In this work we present an actively controlled PTx system that enables safe operation during a procedure in which electrical conditions are changing, and demonstrate this experimentally.Introduction

M3 - Meeting abstract

BT - Proceedings of the International Society of Magnetic Resonance in Medicine

PB - International Society for Magnetic Resonance in Medicine

ER -