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Proceedings Paper

Multi-modal pharmacokinetic modelling for DCE-MRI: using diffusion weighted imaging to constrain the local arterial input function
Author(s): Valentin Hamy; Marc Modat; Rebecca Shipley; Nikos Dikaios; Jon Cleary; Shonit Punwani; Sebastien Ourselin; David Atkinson; Andrew Melbourne
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Paper Abstract

The routine acquisition of multi-modal magnetic resonance imaging data in oncology yields the possibility of combined model fitting of traditionally separate models of tissue structure and function. In this work we hypothesise that diffusion weighted imaging data may help constrain the fitting of pharmacokinetic models to dynamic contrast enhanced (DCE) MRI data. Parameters related to tissue perfusion in the intra-voxel incoherent motion (IVIM) modelling of diffusion weighted MRI provide local information on how tissue is likely to perfuse that can be utilised to guide DCE modelling via local modification of the arterial input function (AIF). In this study we investigate, based on multi-parametric head and neck MRI of 8 subjects (4 with head and neck tumours), the benefit of incorporating parameters derived from the IVIM model within the DCE modelling procedure. Although we find the benefit of this procedure to be marginal on the data used in this work, it is conceivable that a technique of this type will be of greater use in a different application.

Paper Details

Date Published: 21 March 2014
PDF: 8 pages
Proc. SPIE 9034, Medical Imaging 2014: Image Processing, 90340R (21 March 2014); doi: 10.1117/12.2042780
Show Author Affiliations
Valentin Hamy, Univ. College London (United Kingdom)
Marc Modat, Univ. College London (United Kingdom)
Rebecca Shipley, Univ. College London (United Kingdom)
Nikos Dikaios, Univ. College London (United Kingdom)
Jon Cleary, Univ. College London (United Kingdom)
Shonit Punwani, Univ. College London (United Kingdom)
Sebastien Ourselin, Univ. College London (United Kingdom)
David Atkinson, Univ. College London (United Kingdom)
Andrew Melbourne, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 9034:
Medical Imaging 2014: Image Processing
Sebastien Ourselin; Martin A. Styner, Editor(s)

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