Unveiling the Dispersion Kernel in DSC-MRI by Means of Dispersion-Compliant Bases and Control Point Interpolation Techniques

Abstract : In DSC-MRI the presence of dispersion affects the estimation, via deconvolution, of the residue function that characterizes the perfusion in each voxel. Dispersion is descibed by a Vascular Transport Function (VTF) which knolewdge is essential to recover a dispersion-free residue function. State-of-the-art techniques aim at characterizing the VTF but assume a specific shape for it, which in reality is unknown. We propose to estimate the residue function without assumptions by means of Dispersion-Compliant Bases (DCB). We use these results to find which VTF model better describes the in vivo data for each tissue type by means of control point interpolation approaches.
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ISMRM 24th Annual Meeting, May 2016, Singapore, Singapore. 2016, Proc. Int. Soc. Mag. Reson. Med. 24 (2016). 〈http://www.ismrm.org/2016-annual-meeting-exhibition/〉
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Contributeur : Marco Pizzolato <>
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Marco Pizzolato, Rutger Fick, Timothé Boutelier, Rachid Deriche. Unveiling the Dispersion Kernel in DSC-MRI by Means of Dispersion-Compliant Bases and Control Point Interpolation Techniques. ISMRM 24th Annual Meeting, May 2016, Singapore, Singapore. 2016, Proc. Int. Soc. Mag. Reson. Med. 24 (2016). 〈http://www.ismrm.org/2016-annual-meeting-exhibition/〉. 〈hal-01408170〉

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