Head of Press and Information Office
Dr. Dr. Jens Simon
Phone: +49 531 592-3005
Email:
jens.simon(at)ptb.de
A major challenge of cardiac ultrahigh field magnetic resonance imaging (MRI) is the impact of respiratory motion. Not only the image quality is limited by varying B1+-inhomogeneities, but also the spatial distribution of the specific absorption rate (SAR) and hence the safety relevant power limits are affected by respiratory motion. To quantify these effects, Natalie Schön (AG 8.14) and colleagues implemented a respirating body model in electromagnetic field simulations of a 7T transceiver body array, using finite-difference time-domain (FDTD) simulations. For different respiratory states and array configurations, the impact of respiration was investigated and analysed in terms of B1+-inhomogeneity and SAR for different safety approaches. This cooperative work of PTB groups 8.14 and 8.11, Magdeburg University (OVGU) and the Center for Magnetic Resonance Research of the University of Minnesota has now been published in Magnetic Resonance in Medicine. (doi: https://doi.org/10.1002/mrm.29402).
Contact:
Natalie Schön, E-Mail: Natalie.Schoen(at)ptb.de
Dr. Dr. Jens Simon
Phone: +49 531 592-3005
Email:
jens.simon(at)ptb.de
Karin Conring
Phone: +49 531 592-3006
Fax: +49 531 592-3008
Email:
karin.conring(at)ptb.de
Physikalisch-Technische Bundesanstalt
Bundesallee 100
38116 Braunschweig