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. 2019 Mar 19;33(6):660–669. doi: 10.1177/0269881119836229

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 6. — Arterial spin labelling (ASL) data quality. Left: a representative cerebral blood flow (CBF) map of one subject for a 5-min ASL acquisition. Centre: the mean CBF map averaged over all subjects. Right: the mean temporal signal to noise ratio (tSNR) map averaged over all subjects. All maps are masked with a grey matter mask (>25% probability of being grey matter) and overlaid on the mean T₁ image of all subjects.