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| Home > Publications Database > Arterial Spin Labeling (ASL) in der neuroradiologischen Diagnostik – Methodischer Überblick und Anwendungsfälle. |
| Home > Publications Database > Arterial Spin Labeling (ASL) in der neuroradiologischen Diagnostik – Methodischer Überblick und Anwendungsfälle. |
| Journal Article (Review Article) | DZNE-2024-00011 |
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2024
Thieme
Stuttgart [u.a.]
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Please use a persistent id in citations: doi:10.1055/a-2119-5574
Abstract: Arterial spin labeling (ASL) is a magnetic resonance imaging (MRI)-based technique using labeled blood-water of the brain-feeding arteries as an endogenous tracer to derive information about brain perfusion. It enables the assessment of cerebral blood flow (CBF).This review aims to provide a methodological and technical overview of ASL techniques, and to give examples of clinical use cases for various diseases affecting the central nervous system (CNS). There is a special focus on recent developments including super-selective ASL (ssASL) and time-resolved ASL-based magnetic resonance angiography (MRA) and on diseases commonly not leading to characteristic alterations on conventional structural MRI (e. g., concussion or migraine).ASL-derived CBF may represent a clinically relevant parameter in various pathologies such as cerebrovascular diseases, neoplasms, or neurodegenerative diseases. Furthermore, ASL has also been used to investigate CBF in mild traumatic brain injury or migraine, potentially leading to the establishment of imaging-based biomarkers. Recent advances made possible the acquisition of ssASL by selective labeling of single brain-feeding arteries, enabling spatial perfusion territory mapping dependent on blood flow of a specific preselected artery. Furthermore, ASL-based MRA has been introduced, providing time-resolved delineation of single intracranial vessels.Perfusion imaging by ASL has shown promise in various diseases of the CNS. Given that ASL does not require intravenous administration of a gadolinium-based contrast agent, it may be of particular interest for investigations in pediatric cohorts, patients with impaired kidney function, patients with relevant allergies, or patients that undergo serial MRI for clinical indications such as disease monitoring.· ASL is an MRI technique that uses labeled blood-water as an endogenous tracer for brain perfusion imaging.. · It allows the assessment of CBF without the need for administration of a gadolinium-based contrast agent.. · CBF quantification by ASL has been used in several pathologies including brain tumors or neurodegenerative diseases.. · Vessel-selective ASL methods can provide brain perfusion territory mapping in cerebrovascular diseases.. · ASL may be of particular interest in patient cohorts with caveats concerning gadolinium administration..
Keyword(s): Humans (MeSH) ; Child (MeSH) ; Contrast Media (MeSH) ; Spin Labels (MeSH) ; Gadolinium (MeSH) ; Magnetic Resonance Imaging: methods (MeSH) ; Arteries (MeSH) ; Magnetic Resonance Angiography: methods (MeSH) ; Cerebrovascular Disorders: diagnostic imaging (MeSH) ; Migraine Disorders (MeSH) ; Water (MeSH) ; Neurodegenerative Diseases (MeSH) ; Contrast Media ; Spin Labels ; Gadolinium ; Water
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