Meeting Banner
Abstract #2268

Eddy current correction in diffusion-weighted STEAM MRS in the presence of water and fat peaks

Stefan Ruschke 1 , Thomas Baum 1 , Hendrik Kooijman 2 , Marcus Settles 1 , Axel Haase 3 , Ernst J. Rummeny 1 , and Dimitrios C. Karampinos 1

1 Department of Diagnostic and Interventional Radiology, Technische Universitt Mnchen, Munich, Germany, 2 Philips Healthcare, Hamburg, Germany, 3 Zentralinstitut fr Medizintechnik, Technische Universitt Mnchen, Garching, Germany

Eddy current effects can distort peak line shapes in DW-MRS, inducing asymmetric peaks and causing bias in the peak area quantification. Previous approaches require a reference signal to correct for eddy current effects. However, finding a reference signal is not always feasible in the presence of water and fat peaks. In the present work, an approach acquiring spectra with opposite diffusion gradient polarities and using an appropriate signal combination routine is proposed to correct for eddy current effects. Examples from the application of the proposed approach are shown in bone marrow and skeletal muscle, where both water and fat peaks are present.

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

Join Here