Meeting Banner
Abstract #0923

Quantitative Susceptibility Mapping (QSM) at 7 Tesla:Correction of Induced Field Fluctuations with Real-Time Feedback Field Control

PINAR SENAY ZBAY 1,2 , Yolanda Drst 2 , Klaas Paul Prssmann 2 , and Daniel Nanz 1

1 Department of Radiology, University Hospital Zrich, Zrich, Switzerland, 2 Institute of Biomedical Engineering, ETH Zrich, Zrich, Switzerland

Field fluctuations due to breathing and limb motions can create artifacts, which might become severe at very high field. This study investigated to what degree the use of real-time high-order feedback-field control (FFC) with NMR-field-probes can avoid generation of artifacts that were deliberately attempted to be generated in quantitative susceptibility maps (QSM) by 1) deep breathing, and 2) arm movement, each case with and without FFC. Image quality in FFC scans was clearly improved with a better visualization of fine structures, reduced ghosting artifacts and correction of larger areas with unlikely alteration of susceptibility as compared with the standard scans.

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

Join Here