Patch-based super-resolution of arterial spin labeling magnetic resonance images

Arterial spin labeling is a magnetic resonance perfusion imaging technique that, while providing results comparable to methods currently considered as more standard concerning the quantification of the cerebral blood flow, is subject to limitations related to its low signal-to-noise ratio and low re...

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Bibliographic Details
Published in:NeuroImage (Orlando, Fla.) Fla.), 2019-04, Vol.189, p.85-94
Main Authors: Meurée, Cédric, Maurel, Pierre, Ferré, Jean-Christophe, Barillot, Christian
Format: Article
Language:English
Subjects:
Adult
Algorithms
Arterial spin labeling
Bioengineering
Blood flow
Brain - diagnostic imaging
Brain Neoplasms - diagnostic imaging
Brain tumors
Cerebral blood flow
Computer Simulation
Denoising
Female
Humans
Image Processing, Computer-Assisted - methods
Life Sciences
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Methods
MRI
Neuroimaging
Neuroimaging - methods
Noise
Partial volume effects
Perfusion
Spin labeling
Spin Labels
Standard deviation
Super-resolution
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Summary:Arterial spin labeling is a magnetic resonance perfusion imaging technique that, while providing results comparable to methods currently considered as more standard concerning the quantification of the cerebral blood flow, is subject to limitations related to its low signal-to-noise ratio and low resolution. In this work, we investigate the relevance of using a non-local patch-based super-resolution method driven by a high resolution structural image to increase the level of details in arterial spin labeling images. This method is evaluated by comparison with other image dimension increasing techniques on a simulated dataset, on images of healthy subjects and on images of subjects scanned for brain tumors, who had a dynamic susceptibility contrast acquisition. The influence of an increase of ASL images resolution on partial volume effects is also investigated in this work. •Super-resolution for arterial spin labeling magnetic resonance images is validated.•Validation on simulations, healthy subjects and dynamic susceptibility contrast.•High resolution reconstructed images are closer to reference images.•Super-resolution reduces partial volume effects in cerebral blood flow images.
ISSN:1053-8119
1095-9572
DOI:10.1016/j.neuroimage.2019.01.004