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Erschienen in:
2014 | OriginalPaper | Buchkapitel
How Does Compressed Sensing Affect Activation Maps in Rat fMRI?
verfasst von : C. Chavarrias, J. F. P. J. Abascal, P. Montesinos, M. Desco
Erschienen in: XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013
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The acceleration of dynamic MRI studies such as fMRI would be a killing application of the recently developed compressed sensing techniques. We present the application of a spatiotemporal total variation reconstruction algorithm to undersampled rat fMRI series. In addition to the t maps extraction, a quantitative analysis of the percentage signal change has been performed to assess the maximum acceleration feasible. Undersampling up to 50%(x2 acceleration) can be applied without significant percentage signal change loss, and the activation maps preserve their shape within that range. To our knowledge, this is the first work performing quantitative analysis in compressed sensing reconstructions of rat fMRI data.