Meeting Banner
Abstract #3326

B0 Susceptibility-Induced Geometric Image Distortion at Low-Field for Magnetic Resonance Imaging in Radiation Therapy

Manuel Schneider1, Sylvain Doussin1, Dieter Ritter1, and Martin Requardt1
1Siemens Healthcare GmbH, Erlangen, Germany

Our main purpose was to quantify geometric image distortion due to reduced susceptibility at 0.55T compared to 1.5T. Therefore, Bloch simulations of a digital phantom and a 2D GRE sequence were performed. The simulations at both field strengths were calculated twice: once without considering B0 susceptibility, and once considering B0 susceptibility artefacts. Additionally, 3D T2 SPACE images with high readout bandwidth as well as echo-planar diffusion-weighted images were obtained and compared in n=3 volunteers. Less geometric distortion due to B0 susceptibility artefacts was observed at 0.55T compared to higher field strengths.

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

Join Here