Perfusion analysis using dynamic arterial spin labeling (DASL)
نویسندگان
چکیده
منابع مشابه
Perfusion imaging using dynamic arterial spin labeling (DASL).
Recently, a technique based on arterial spin labeling, called dynamic arterial spin labeling (DASL (Magn Reson Med 1999;41:299-308)), has been introduced to measure simultaneously the transit time of the labeled blood from the labeling plane to the exchange site, the longitudinal relaxation time of the tissue, and the perfusion of the tissue. This technique relies on the measurement of the tiss...
متن کاملPerfusion imaging using arterial spin labeling.
Arterial spin labeling is a magnetic resonance method for the measurement of cerebral blood flow. In its simplest form, the perfusion contrast in the images gathered by this technique comes from the subtraction of two successively acquired images: one with, and one without, proximal labeling of arterial water spins after a small delay time. Over the last decade, the method has moved from the ex...
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Delay 2 s Fig. 1. ASL experiment from a volunteer at 1.5T. (a) The imaging slice and labeling slab are depicted by yellow and blue boxes. (b) Fat-saturated SPGR image. Perfusion images are shown in (c-e) for delay times of 1 s, 1.5 s and 2 s. Arteries located close to the skin are depicted well; however, perfusion in glandular tissue is hardly visible. The yellow arrow shows an artery which doe...
متن کاملMyocardial perfusion using arterial spin labeling CMR: promise and challenges.
c i d B t Arterial spin labeling (ASL) magnetic resonance imaging (MRI) is a noncontrast technique that can quantify tissue blood flow. It is most commonly applied to the brain (1) and kidney (2); however, it also has potential application to other organs, including the heart (3). Used for the heart, ASL might eventually play a role in cardiac pharmacological stress testing, where it could be u...
متن کاملPediatric perfusion imaging using pulsed arterial spin labeling.
PURPOSE To test the feasibility of pediatric perfusion imaging using a pulsed arterial spin labeling (ASL) technique at 1.5 T. MATERIALS AND METHODS ASL perfusion imaging was carried out on seven neurologically normal children and five healthy adults. The signal-to-noise ratio (SNR) of the perfusion images along with T1, M(0), arterial transit time, and the temporal fluctuation of the ASL ima...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 1999
ISSN: 0740-3194,1522-2594
DOI: 10.1002/(sici)1522-2594(199902)41:2<299::aid-mrm13>3.3.co;2-i