AJNR. American journal of neuroradiology.AJNR Am J Neuroradiol.2015 Feb;36(2):295-301. doi: 10.3174/ajnr.A4094. Epub 2014 Aug 21.
BACKGROUND AND PURPOSE: Arterial transit time is the time needed for blood to travel from large arteries to capillaries, as estimated from arterial spin-labeling MR imaging. The purpose of this study was to determine whether vascular risk factors and cognitive performance are related to regional dif
CBF measurements using multidelay pseudocontinuous and velocity-selective arterial spin labeling in patients with long arterial transit delays: comparison with xenon CT CBF.
Qiu D1, Straka M, Zun Z, Bammer R, Moseley ME, Zaharchuk G.
Journal of magnetic resonance imaging : JMRI.J Magn Reson Imaging.2012 Jul;36(1):110-9. doi: 10.1002/jmri.23613. Epub 2012 Feb 22.
PURPOSE: To test the theory that velocity-selective arterial spin labeling (VSASL) is insensitive to transit delay.MATERIALS AND METHODS: Cerebral blood flow (CBF) was measured in ten Moyamoya disease patients using xenon computed tomography (xeCT) and magnetic resonance imaging (MRI), which include
Efficient sampling of early signal arrival for estimation of perfusion and transit time in whole-brain arterial spin labeling.
Lee W1, Janik R, Scouten A, Stefanovic B, Sled JG.
Magnetic resonance in medicine.Magn Reson Med.2012 Jul;68(1):179-87. doi: 10.1002/mrm.23222. Epub 2011 Dec 21.
Arterial spin labeling can be used to measure both cerebral perfusion and arterial transit time. However, accurate estimation of these parameters requires adequate temporal sampling of the arterial spin labeling difference signal. In whole-brain multislice acquisitions, two factors reduce the accura