Spectroscopic proton image data recorded with the aid of a gradient- echo spectroscopic imaging pulse sequence are reported. A postdetection processing method is suggested which permits correction of artifacts due to inhomogeneity, susceptibility, and chemical-shift resonance offsets. That is, apart from the spectral information available in this way, better spatial resolutions can be achieved. The method is demonstrated by resonance-offset corrected images of the human finger in vivo. Moreover, resonance-line selective and spectroscopically resolved diffusion-weighted images and diffusivity maps rendered with the aid of the same postdetection procedure are shown.
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Acknowledgements-Financial support by the Deutsche Forschungs-gemeinschaft and the Alexander van Humboldt Foundation is gratefully acknowledged. J.W. is indebted to the Institute of Measurement Science, Slovak Academy of Sciences, for continuous support.
- Chemical shift artifact
- Diffusivity mapping
- Human finger
- NMR microscopy
- Spectroscopic imaging