MoMAN „From Molecule to Man“ Talk
Prospective motion and B0 shim correction in MRS

Zeit : Freitag , 19. August 2022, 10:00 - 11:00 Uhr
Veranstalter : MoMAN - Zentrum für translationale Bildgebung
Ort : Universität Ulm, Meyerhofstraße M26 (ZQB), Seminarraum 2202

Referent: Dinesh Deelchand, Ph.D. (Center for Magnetic Resonance Research, University of Minnesota)

Abstract: Subject motion remains a major concern during magnetic resonance spectroscopy (MRS) acquisitions, especially in children, patients with movement disorders, or the elderly, due to typically longer scan times required to achieve sufficient signal-to-noise ratio. Motion during MRS scans often degrades spectral quality, resulting in insufficient water suppression, broader spectral linewidth, reduced SNR, and/or lipid contamination. Even when spectral quality is not visibly degraded, MR spectra may still be recorded from a different brain region than the region of interest (this is especially a concern with very small anatomical targets, such as hypothalamus) and, therefore, provide inaccurate metabolite concentrations. In this talk, I will give a brief summary of prospective motion correction techniques currently available in MRI/MRS. I will also demonstrate and validate real-time motion and shim corrections in the human brain using MRS.