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. 2018 Jun 5;39(1):173–181. doi: 10.1177/0271678X18781667

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© The Author(s) 2018

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 3. — Scatter plot of arterial transit time (ATT) measured by PASL [upper] and spatial coefficient of variation (CoV) in pCASL CBF images [lower] versus PET-based measures: CBF [left], mean transit time (MTT) [middle], and vascular reactivity (VR) [right]. Blue and red circles represent data from contralateral and ipsilateral ROIs, respectively. When correlations are statistically significant (p < 0.05), regression lines are also presented in blue (contralateral ROI only), red (ipsilateral ROI only), or black (pooled data).