Arterial Spin Labeling-Based MR Angiography for Cerebrovascular Diseases: Principles and Clinical Applications.

Autor: Togao O; Department of Molecular Imaging & Diagnosis, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan., Obara M; Philips Japan, Tokyo, Japan., Yamashita K; Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan., Kikuchi K; Department of Molecular Imaging & Diagnosis, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan., Wada T; Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan., Murazaki H; Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan., Arimura K; Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan., Nishimura A; Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan., Horie N; Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan., van de Ven K; Philips Healthcare, Best, The Netherlands., Van Cauteren M; Philips Healthcare BIU MR Asia Pacific, Tokyo, Japan., Ishigami K; Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Jazyk: angličtina
Zdroj: Journal of magnetic resonance imaging : JMRI [J Magn Reson Imaging] 2024 Oct; Vol. 60 (4), pp. 1305-1324. Date of Electronic Publication: 2023 Nov 08.
DOI: 10.1002/jmri.29119
Abstrakt: Arterial spin labeling (ASL) is a noninvasive imaging technique that labels the proton spins in arterial blood and uses them as endogenous tracers. Brain perfusion imaging with ASL is becoming increasingly common in clinical practice, and clinical applications of ASL for intracranial magnetic resonance angiography (MRA) have also been demonstrated. Unlike computed tomography (CT) angiography and cerebral angiography, ASL-based MRA does not require contrast agents. ASL-based MRA overcomes most of the disadvantages of time-of-flight (TOF) MRA. Several schemes have been developed for ASL-based MRA; the most common method has been pulsed ASL, but more recently pseudo-continuous ASL, which provides a higher signal-to-noise ratio (SNR), has been used more frequently. New methods that have been developed include direct intracranial labeling methods such as velocity-selective ASL and acceleration-selective ASL. MRA using an extremely short echo time (eg, silent MRA) or ultrashort echo-time (TE) MRA can suppress metal susceptibility artifacts and is ideal for patients with a metallic device implanted in a cerebral vessel. Vessel-selective 4D ASL MRA can provide digital subtraction angiography (DSA)-like images. This review highlights the principles, clinical applications, and characteristics of various ASL-based MRA techniques. LEVEL OF EVIDENCE: 5 TECHNICAL EFFICACY: Stage 2.
(© 2023 International Society for Magnetic Resonance in Medicine.)
Databáze: MEDLINE
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