Components of day-to-day variability of cerebral perfusion measurements - Analysis of phase contrast mapping magnetic resonance imaging measurements in healthy volunteers.

Highly significant inverse associations of gCBF with both hemoglobin (-11.41 [95%CI: -17.63 to -5.20] ml/100ml/min per mmol/l, p = 0.001) and plasma caffeine (-0.25 [95%CI: -0.42 to 0.08] ml/100ml/min per μ mol/l, p = 0.006) were found.

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