Abstract #1969
Simple method for automatic frequency and phase alignment of in-vivo MR spectra
Evita C. Wiegers 1 , Bart Philips 1 , Hanne M. M. Rooijackers 2 , Alan J. Wright 3 , Arend Heerschap 1 , and Marinette van der Graaf 1,4
1
Radiology and Nuclear Medicine, Radboud
University Medical Center, Nijmegen, Gelderland,
Netherlands,
2
Internal
Medicine, Radboud University Medical Center, Nijmegen,
Gelderland, Netherlands,
3
Cancer
Research UK Cambridge Institute, University of
Cambridge, Cambridge, United Kingdom,
4
Pediatrics,
Radboud University Medical Center, Nijmegen, Gelderland,
Netherlands
When subtracting MRS data, which is commonly done in
J-difference editing techniques, it is of great
importance that spectra are accurately phase and
frequency aligned with respect to each other. To allow
accurate phase and frequency alignment, we present a
simple, robust and fast alignment algorithm, based on
maximizing the normalized scalar product between two
spectra.
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