An optimized velocity selective arterial spin labeling module with reduced eddy current sensitivity for improved perfusion quantification
نویسندگان
چکیده
منابع مشابه
Myocardial arterial spin labeling perfusion imaging with improved sensitivity
BACKGROUND Myocardial arterial spin labeling (ASL) is a noninvasive MRI based technique that is capable of measuring myocardial blood flow (MBF) in humans. It suffers from poor sensitivity to MBF due to high physiological noise (PN). This study aims to determine if the sensitivity of myocardial ASL to MBF can be improved by reducing image acquisition time, via parallel imaging. METHODS Myocar...
متن کاملVelocity-selective arterial spin labeling.
In pathologies in which slow or collateral flow conditions may exist, conventional arterial spin labeling (ASL) methods that apply magnetic tags based on the location of arterial spins may not provide robust measures of cerebral blood flow (CBF), as the transit delay for the delivery of blood to target tissues may far exceed the relaxation time of the tag. Here we describe current methods for A...
متن کاملDemonstration of velocity selective myocardial arterial spin labeling perfusion CMR
Background Arterial spin labeling of the heart has been shown to estimate myocardial perfusion and perfusion reserve at a single short-axis slice for coronary artery disease assessment. However, current spatial labeling methods suffer from transit delay effects when imaging is extended to more than a single slice. Velocity selective (VS) labeling is a promising alternative that does not suffer ...
متن کامل5829 Velocity - Selective Inversion Prepared Arterial Spin Labeling for 3 D Whole - Brain Perfusion Measurment
TARGET AUDIENCE: MRI physicists interested in velocity-selective arterial spin labeling (VSASL) and 3D whole-brain CBF mapping. PURPOSE: Velocity-selective ASL (VSASL) is a labeling technique based on the velocity of arterial blood instead of spatial location. This significantly reduces the arterial transit time and thus holds great promise for perfusion measurements in many clinical applicatio...
متن کاملVelocity Selective Inversion Pulse Trains for Velocity Selective Arterial Spin Labeling
Introduction In velocity selective arterial spin labeling (VSASL) (1), blood is tagged based on flow velocity, without spatial selectivity. The most attractive feature of this tagging approach is that it is in principle immune to transit delay effects, and is therefore of potential utility in ischemic diseases such as stroke. A primary drawback of existing implementations of VSASL is that the t...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2012
ISSN: 0740-3194
DOI: 10.1002/mrm.24302