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Updated: Jan 17, 2026
Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling
Published on: May 30, 2011
Essential guide to arterial spin labelling: Review of key artifacts and applications
R Sutil Berjón1, D Castanedo Vázquez1, D Herrán de la Gala2
1Servicio de Radiodiagnóstico, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Instituto de Investigación de Valdecilla (Idival), Santander, Spain.
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Arterial spin labelling (ASL) is a magnetic resonance imaging perfusion technique used to study cerebral blood flow. It differs from magnetic susceptibility-based perfusion sequences in that it does not require contrast media, but rather uses the signals emitted by pre-labelled protons. It is useful in the exploration of several different kinds of neurological pathologies including ischaemic stroke, brain tumours, dementia and epilepsy. However, it presents numerous artifacts that radiologists must be familiar with to ensure a correct interpretation of findings.
