Arterial spin labelling (ASL) is a non-invasive and non-contrast perfusion imaging technique that can serve as an imaging biomarker to assess tissue blood flow characteristics. A perfusion phantom is valuable to evaluate newly developed ASL sequences, test consistency and to compare sequence reproducibility across various scanners. In this study, we performed a longitudinal assessment of the reproducibility and repeatability of perfusion measurement using 2D pCASL sequence with 20 PLDs over 5 weeks duration with a previously developed 3D printed perfusion phantom. Intra-class correlation coefficient (ICC) of measured perfusion and T1 are 0.96 and 0.94 respectively, indicating good reproducibility and repeatability.
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