Abstract
Dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) has become a valuable clinical tool for cancer diagnosis and prognosis. DCE MRI provides pharmacokinetic parameters dependent on the extravasation of small molecular contrast agents, and thus high temporal resolution and/or spatial resolution is required for accurate estimation of parameters. In this article we investigate the efficacy of 2 under sampling approaches to speed up DCE MRI: a conventional keyhole approach and compressed sensing–based imaging. Data reconstructed from variants of these methods has been compared with the full k-space reconstruction with respect to data quality and pharmacokinetic parameters Ktrans and ve. Overall, compressive sensing provides better data quality and reproducible parametric maps than key-hole methods with higher acceleration factors. In particular, an under sampling mask based on a priori precontrast data showed high fidelity of reconstructed data and parametric maps up to 5× acceleration.
Original language | English (US) |
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Pages (from-to) | 437-450 |
Number of pages | 14 |
Journal | Critical Reviews in Biomedical Engineering |
Volume | 42 |
Issue number | 6 |
DOIs | |
State | Published - Jun 26 2014 |
Keywords
- Compressed sensing
- Dynamic contrast-enhanced MRI
- Keyhole
- Parametric mapping
ASJC Scopus subject areas
- Biomedical Engineering