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Radiología (English Edition) Essential guide to arterial spin labelling: Review of key artifacts and applicat...
Journal Information
Vol. 67. Issue 5.
(September - October 2025)
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22
Vol. 67. Issue 5.
(September - October 2025)
Radiology in Images
Essential guide to arterial spin labelling: Review of key artifacts and applications
Guía esencial del arterial spin labelling: revisión de los principales artefactos y aplicaciones
Visits
22
R. Sutil Berjóna,b,
Corresponding author
rsutilrad@gmail.com

Corresponding author.
, D. Castanedo Vázqueza,b, D. Herrán de la Galac, M. Drake Péreza,b, E. Marco de Lucasa,b
a Servicio de Radiodiagnóstico, Hospital Universitario Marqués de Valdecilla, Santander, Spain
b Instituto de Investigación de Valdecilla (Idival), Santander, Spain
c Neuroradiology Department, APHP, Hospital Pitié-Salpêtrière, Paris, France
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Table 1. Summary of main ASL artifacts and how to resolve them to achieve technically optimal CBF maps.
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Table 2. Summary of main clinical applications of ASL.
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Abstract

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.

Keywords:
Magnetic resonance imaging
Artifacts
Carotid stenosis
Acute stroke
Brain tumour
Dementia
Resumen

Arterial spin labelling (ASL) es una técnica de perfusión cerebral por de resonancia magnética utilizada para el estudio del flujo sanguíneo cerebral. Se diferencia de las secuencias de perfusión basadas en susceptibilidad magnética por no requerir medios de contraste, sino que aprovecha la señal emitida por los protones previamente marcados. Tiene utilidad en el estudio de diversas patologías neurológicas de diferente naturaleza como el ictus isquémico, los tumores cerebrales, las demencias o la epilepsia entre otros. No obstante, presenta numerosos artefactos que deben ser conocidos por el radiólogo para una correcta interpretación de los hallazgos.

Palabra clave:
Resonancia magnética
Artefactos
Estenosis carotídea
Ictus
Tumor cerebral
Demencia

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