Abstract
An acquisition technique for optimal MRI reconstruction from projections is presented. It consists of the acquisition of two circular paths which are used to calculate the most informative directions to be acquired. The selection of the acquisition angles is performed where the information content is maximal. The information content is directly evaluated using the power spectra of the k-space samples acquired by the circular paths. The method makes it possible to reduce the total acquisition time without degradation of the reconstructed image and it adapts to the arbitrary shape of the sample. For these reasons, it is particularly useful in those applications where acquisition from projections is strongly recommended for saving acquisition time, in particular for fMRI. The method has been tested on experimental data collected by a commercial MRI apparatus and compared with other adaptive acquisition sampling schemes.
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Placidi, G. (2010). Circular Acquisition to Define the Minimal Set of Projections for Optimal MRI Reconstruction. In: Barneva, R.P., Brimkov, V.E., Hauptman, H.A., Natal Jorge, R.M., Tavares, J.M.R.S. (eds) Computational Modeling of Objects Represented in Images. CompIMAGE 2010. Lecture Notes in Computer Science, vol 6026. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12712-0_23
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DOI: https://doi.org/10.1007/978-3-642-12712-0_23
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