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Perfusion magnetic resonance imaging with continuous arterial spin labeling: methods and clinical applications in the central nervous system

John A. Detre, David C. Alsop
1999 European Journal of Radiology  
Several methods are now available for measuring cerebral perfusion and related hemodynamic parameters using magnetic resonance imaging (MRI).  ...  termed continuous arterial spin labeling (CASL).  ...  The extent of this alteration is determined by comparison with images acquired with control labeling that does not modulate the magnetization of arterial water.  ... 
doi:10.1016/s0720-048x(99)00050-9 pmid:10401592 fatcat:cxf2sndi7ndrlh266m5pah2vii

Continuous arterial spin labeling using a local magnetic field gradient coil

Robert Trampel, Toralf Mildner, Ute Goerke, Andreas Schaefer, Wolfgang Driesel, David G. Norris
2002 Magnetic Resonance in Medicine  
Continuous arterial spin labeling (ASL) using a locally induced magnetic field gradient for adiabatic inversion of spins in the common carotid artery of human volunteers is demonstrated.  ...  The experimental setup consisted of a helmet resonator for imaging, a circular RF surface coil for labeling, and gradient loops to produce a magnetic field gradient.  ...  Continuous arterial spin labeling (CASL) can be achieved by RF irradiation in the presence of a magnetic field gradient along the carotid artery, which results in an adiabatic inversion of the flowing  ... 
doi:10.1002/mrm.10228 pmid:12210922 fatcat:w5xdrlghubhk7boqtktzsxe36y

Noninvasive Renal Perfusion Measurement Using Arterial Spin Labeling (ASL) MRI: Basic Concept

Min-Chi Ku, María A Fernández-Seara, Frank Kober, Thoralf Niendorf
2021 Msphere  
Arterial spin labeling (ASL) based perfusion MRI techniques, can offer a noninvasive and reproducible way of measuring renal perfusion in animal models.  ...  Therefore the quantification of regional renal perfusion could provide important insights into renal function and renal (patho)physiology.  ...  PARENCHIMA (renalmri.org) is a community-driven Action in the COST program of the European Union, which unites more  ... 
doi:10.1007/978-1-0716-0978-1_13 pmid:33476003 fatcat:ahwtscfl6zhpbkttfcntdmyugu

Demonstration of velocity selective myocardial arterial spin labeling perfusion CMR

Terrence R Jao, Krishna S Nayak
2016 Journal of Cardiovascular Magnetic Resonance  
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.  ...  Demonstration of velocity selective myocardial arterial spin labeling perfusion CMR Terrence R Jao 1* , Krishna S Nayak 2 From 19th Annual SCMR Scientific Sessions Los Angeles, CA, USA. 27-30 January 2016  ... 
doi:10.1186/1532-429x-18-s1-p98 fatcat:qitymnqk5bavlmqkwj5szho5ny

Intracranial 3D and 4D MR Angiography Using Arterial Spin Labeling: Technical Considerations

Yuriko Suzuki, Noriyuki Fujima, Matthias J.P. van Osch
2019 Magnetic Resonance in Medical Sciences  
In the 1980's some of the earliest studies of arterial spin labeling (ASL) MRI have demonstrated its ability to generate MR angiography (MRA) images.  ...  Although these ASL techniques have been already utilized in perfusion imaging and their usefulness has been suggested by many studies, some additional considerations should be made when employing them  ...  Thomas Okell (University of Oxford, Oxford, UK) for providing images and insightful suggestions that greatly improved the manuscript, Dr.  ... 
doi:10.2463/mrms.rev.2019-0096 pmid:31761840 pmcid:PMC7809141 fatcat:5ynfluizsbdzje6vpw2dlz6qxq

Arterial spin labeling perfusion magnetic resonance imaging of non-human primates

Xiaodong Zhang, Chun-Xia Li
2016 Quantitative Imaging in Medicine and Surgery  
Arterial spin labeling (ASL) perfusion MRI techniques allow for high temporal and spatial CBF measurement and are intensively used in studies of animals and humans.  ...  In this article, current high-resolution ASL perfusion MRI techniques for quantitative evaluation of brain physiology and function in NHPs are described and their applications and limitation are discussed  ...  Research Highlights Arterial spin labeling perfusion magnetic resonance imaging of non-human primates © Quantitative Imaging in Medicine and Surgery. All rights reserved.  ... 
doi:10.21037/qims.2016.10.05 pmid:27942478 pmcid:PMC5130565 fatcat:m53bah4ugjdkrfceoxlqdtx6lm

Measurement of cerebral perfusion using MRI

Egbert JW Bleeker, Matthias JP van Osch
2010 Imaging in Medicine  
: arterial spin labeling n AsL n cerebral blood flow n cerebral perfusion n contrast agents n dsC-MrI n dynamic susceptibility contrast MrI n neurodegenerative diseases  ...  The second technique, arterial spin labeling (ASL), is a completely noninvasive technique that employs water protons as an endogenous tracer.  ...  This other MR perfusion technique, called arterial spin labeling (ASL), employs radiofrequency (RF) pulses to magnetically label proton spins in blood, thereby creating an endogenous tracer [23] . future  ... 
doi:10.2217/iim.09.30 fatcat:du4trprf5zcsxbsqy365tyu2di

Sub-millimetre resolution laminar fMRI using Arterial Spin Labelling in humans at 7 T

Sriranga Kashyap, Dimo Ivanov, Martin Havlicek, Laurentius Huber, Benedikt A Poser, Kâmil Uludağ
2021 PLoS ONE  
Alternatively, regional changes in perfusion (i.e., cerebral blood flow through tissue) are colocalised to neuronal activation, which can be non-invasively measured using Arterial Spin Labelling (ASL)  ...  In the present study, we present for the first time in humans, isotropic sub-millimetre spatial resolution functional perfusion images using Flow-sensitive Alternating Inversion Recovery (FAIR) ASL with  ...  ) using arterial spin labelling (ASL) [28] [29] [30] .  ... 
doi:10.1371/journal.pone.0250504 pmid:33901230 pmcid:PMC8075193 fatcat:4u24nbmpf5cjroxycsr2i7xuwi

Pseudo-asymmetry of cerebral blood flow in arterial spin labeling caused by unilateral fetal-type circle of Willis: Technical limitation or a way to better understanding physiological variations of cerebral perfusion and improving arterial spin labeling acquisition?

B Law-ye, B Geerts, D Galanaud, D Dormont, N Pyatigorskaya
2016 Journal of Cerebral Blood Flow and Metabolism  
In the recently published article, "Unilateral fetal-type circle of Willis anatomy causes right-left asymmetry in cerebral blood flow with pseudo-continuous arterial spin labeling: A limitation of arterial  ...  , it was shown by the method of arterial spin labeling (ASL) that unilateral fetal-type circle of Willis could induce variation of blood flow in cerebellar and posterior cerebral artery territory.  ...  Arterial spin labeling (ASL) is a non-invasive, contrast-free magnetic resonance (MR) perfusion method for quantifying cerebral blood flow (CBF).  ... 
doi:10.1177/0271678x16653614 pmid:27256322 pmcid:PMC5012523 fatcat:2ruenu3fozb57pvavu7ufywxdi

Perfusion magnetic resonance neuroimaging

Adnan Šehić, Fuad Julardžija, Merim Jusufbegović, Deniz Bulja, Hadžan Konjo, Sandra Zubović, Sabina Prevljak, Jasmina Bajrović
2019 Journal of Health Sciences  
There are two main approaches to the measurement of cerebral perfusion by magnetic resonance. The aim of this article is to compare different measuring approaches of MR perfusion neuroimaging.  ...  The role of perfusion neuroimaging in the management of acute stroke has been to prove reduced regional blood flow and to give the contribution in the identification of ischemic areas, respectively the  ...  During last years, there was a description of a few non-invasive methods of measuring perfusion by magnetic resonance imaging (MRI).  ... 
doi:10.17532/jhsci.2019.787 fatcat:4st4tkggfbaz5chgfpnamjhuda

Quantifying CBF with pulsed ASL: Technical and pulse sequence factors

Eric C. Wong
2005 Journal of Magnetic Resonance Imaging  
We summarize here current methods for the quantification of CBF using pulsed arterial spin labeling (ASL) methods.  ...  Velocity-selective ASL (VS-ASL) uses a new type of pulse labeling in which inflowing arterial spins are tagged based on their velocity rather than their spatial location.  ...  In typical implementations, a second image (the control image) is acquired without modulation of the magnetization of inflowing arterial blood.  ... 
doi:10.1002/jmri.20459 pmid:16261572 fatcat:zurzcwztgnc5ncwsqsenodfi2y

Estimation of perfusion properties with MR Fingerprinting Arterial Spin Labeling

Katherine L. Wright, Yun Jiang, Dan Ma, Douglas C. Noll, Mark A. Griswold, Vikas Gulani, Luis Hernandez-Garcia
2018 Magnetic Resonance Imaging  
In this study, the acquisition of ASL data and quantification of multiple hemodynamic parameters was explored using a Magnetic Resonance Fingerprinting (MRF) approach.  ...  A pseudo-continuous ASL labeling scheme was used with pseudo-randomized timings to acquire the MRF ASL data in a 2.5 minute acquisition.  ...  Instead, radiofrequency (RF) magnetic pulses are utilized in ASL perfusion imaging to temporarily perturb the magnetization state of the spins in the blood upstream to the organ of interest.  ... 
doi:10.1016/j.mri.2018.03.011 pmid:29545215 pmcid:PMC5970985 fatcat:6p4t7vmkrjexzf7r24grwgbvgu

Physiological and Functional Magnetic Resonance Imaging Using Balanced Steady-state Free Precession

Sung-Hong Park, Paul Kyu Han, Seung Hong Choi
2015 Korean Journal of Radiology  
the initial magnetization difference, and good T2* contrast (in case of fMRI).  ...  Afterwards, recent developments related to the application of bSSFP, in terms of physiological and functional imaging, are introduced and reviewed.  ...  are induced by a dedicated magnetization preparation module, such as arterial spin labeling (ASL), whereas the fMRI should be performed in the steady state due to the dynamic acquisition nature of fMRI  ... 
doi:10.3348/kjr.2015.16.3.550 pmid:25995684 pmcid:PMC4435985 fatcat:xnh7s3gfc5e3jlhyhbv4flg6hy

Perfusion Magnetic Resonance Imaging: A Comprehensive Update on Principles and Techniques

Geon-Ho Jahng, Ka-Loh Li, Leif Ostergaard, Fernando Calamante
2014 Korean Journal of Radiology  
However, arterial spin-labeling methods provide a unique opportunity to measure cerebral blood flow without requiring an exogenous contrast agent and have better accuracy for quantification.  ...  In this review, we describe the principles and techniques of perfusion MRI. This review summarizes comprehensive updated knowledge on the physical principles and techniques of perfusion MRI.  ...  Eui Jong Kim at the Kyung Hee University Hospital in Seoul, Korea, for providing the clinical case data.  ... 
doi:10.3348/kjr.2014.15.5.554 pmid:25246817 pmcid:PMC4170157 fatcat:e5kbywzhqrh4nci2ztkllll24a

Recent progress in ASL

Luis Hernandez-Garcia, Anish Lahiri, Jonas Schollenberger
2018 NeuroImage  
This article aims to provide the reader with an overview of recent developments in Arterial Spin Labeling (ASL) MRI techniques.  ...  New strategies have been introduced to improve labeling efficiency, reduce artefacts, and estimate other relevant physiological parameters besides perfusion.  ...  One of the more popular and prominent techniques is arterial spin labeling (ASL), which can produce quantitative images of perfusion.  ... 
doi:10.1016/j.neuroimage.2017.12.095 pmid:29305164 pmcid:PMC6030511 fatcat:hkyk5ayarbgvfjqw6nrrrebhuy
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