Meeting Banner
Abstract #2628

Myelin water fraction mapping using relaxation spectra from steady-state gradient echo imaging with partial RF spoiling

Tony Stöcker1,2, Rüdiger Stirnberg1, Difei Wang1, Philipp Ehses1, and Eberhard Pracht1
1German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany, 2Department of Physics & Astronomy, University of Bonn, Bonn, Germany

Synopsis

Keywords: White Matter, Modelling, MyelinA new approach for myelin water fraction (MWF) mapping is presented, based on gradient echo signals with small RF spoiling phase increments. Partially spoiled gradient echo data with 20 different phase increments ($$$|\Delta\phi|\le20^\circ$$$) were efficiently acquired with a custom skipped-CAIPI 3D-EPI sequence. The data is well-suited for a novel joint-fitting approach of $$$T_1$$$- and $$$T_2$$$-spectra, from which high-quality whole-brain MWF maps are derived. MWF-maps show qualitatively good agreement with published data in the white matter (WM). Additionally, the approach seems to provide robust estimates in regions with small MWF, such as the gray matter (GM).

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.

Keywords