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Assessment of the Contribution of the External Carotid Artery to Brain Perfusion in Patients With Internal Carotid Artery Occlusion

P. J. van Laar, J. van der Grond, J. P. Bremmer, C. J.M. Klijn, J. Hendrikse
2008 Stroke  
Although in the Grade 1 group, the ECA supplied a smaller region of the brain compared with the Grade 2 group, the mean regional cerebral blood flow of the perfusion territory supplied by the ECA is similar  ...  Conclusion-In patients with symptomatic internal carotid artery occlusion, focal brain regions may strongly depend on the contribution to cerebral perfusion of the ECA ipsilateral to the side of the internal  ...  The results of previous postmortem and in vivo studies have shown large variability in perfusion territories of the major brain-feeding arteries (ICA and VBA) in healthy subjects and in patients with carotid  ... 
doi:10.1161/strokeaha.108.514265 pmid:18688004 fatcat:lx5acyqpiffr5lidcvae6i3kx4

Probabilistic Anatomic Mapping of Cerebral Blood Flow Distribution of the Middle Cerebral Artery

S.-J. Kim, I.-J. Kim, Y.-K. Kim, T.-H. Lee, J. S. Lee, S. Jun, H.-Y. Nam, J. S. Lee, Y. K. Kim, D. S. Lee
2007 Journal of Nuclear Medicine  
Methods: In the current study, probabilistic maps of the blood flow distribution of the middle cerebral artery (MCA) were developed using the basal and MCA brain SPECT images.  ...  This map could be a potential tool for the analysis of major cerebral artery distribution, especially the MCA.  ...  Recently, flow territory mapping of major cerebral feeding arteries has been conducted (18) .  ... 
doi:10.2967/jnumed.107.045724 pmid:18077521 fatcat:tlfonwondjbbbcvgjazvppj7y4

Flow Territory Mapping of the Cerebral Arteries With Regional Perfusion MRI

J. Hendrikse
2004 Stroke  
Conclusions-We present the first imaging method capable of evaluating both quantitatively and qualitatively the flow territories of the individual brain-feeding arteries in vivo.  ...  In the present study, we evaluate a noninvasive arterial spin labeling MRI method for selective mapping of the flow territories of the left and right internal carotid arteries and posterior circulation  ...  The clinical example shows the ability of RPI to delineate the flow territory of the major cerebral arteries in a patient after EC-IC high-flow bypass surgery.  ... 
doi:10.1161/01.str.0000120312.26163.ec pmid:14988567 fatcat:5dz2aogjnzemterwbp7yqeacvq

Practical considerations for territorial perfusion mapping in the cerebral circulation using super‐selective pseudo‐continuous arterial spin labeling

Jonas Schollenberger, C. Alberto Figueroa, Jon‐Fredrik Nielsen, Luis Hernandez‐Garcia
2019 Magnetic Resonance in Medicine  
This paper discusses several challenges faced by super-selective pseudo-continuous arterial spin labeling, which is used to quantify territorial perfusion in the cerebral circulation.  ...  A strategy to calculate the territorial perfusion fractions of individual vessels is proposed.  ...  ACKNOWLEDGMENTS This work was supported by the German Academic Exchange Service (DAAD), National Institutes of Health (R21EB021562), and the Edward B. Diethrich Professorship.  ... 
doi:10.1002/mrm.27936 pmid:31418475 fatcat:se6yaokzjvgl7ftebqfs6mk5wa

Relation Between Cerebral Perfusion Territories and Location of Cerebral Infarcts

J. Hendrikse, E. T. Petersen, A. Cheze, S. M. Chng, N. Venketasubramanian, X. Golay
2009 Stroke  
and Purpose-The perfusion territories of the brain-feeding arteries are difficult to assess in vivo and therefore standard cerebral perfusion territory templates are often used to determine the relation  ...  The additional information from the territorial arterial spin labeling images changed the classification in 11% of the cortical or border zone infarcts (6 of 56), whereas no territorial changes were observed  ...  Sources of Funding Disclosures At the time of this study, E.T.P. and X.G. were on the speaker's bureau of Philips Medical Systems.  ... 
doi:10.1161/strokeaha.108.539866 pmid:19299630 fatcat:x4mie3fchbaotfqjpitzxjkham

Selective arterial spin labeling (SASL): Perfusion territory mapping of selected feeding arteries tagged using two-dimensional radiofrequency pulses

Nigel P. Davies, Peter Jezzard
2003 Magnetic Resonance in Medicine  
maps derived from all major blood vessels entering the brain.  ...  However, there is great potential for gaining additional information on the territories perfused by the major vessels if individual feeding arteries could be tagged.  ...  The ability to visualize the perfusion territories of major feeding arteries in the brain is potentially important for many clinical applications.  ... 
doi:10.1002/mrm.10475 pmid:12768592 fatcat:bc73qgpvf5gtxjbvtqeiv46j5u

Regional perfusion imaging using pTILT

Cheng Ouyang, Bradley P. Sutton
2013 Journal of Magnetic Resonance Imaging  
This regional perfusion measure allows for the investigation of collateral flows between major feeding vessels in the brain.  ...  Introduction Recently, pseudo-continuous arterial spin labeling (pCASL) sequences [1] have been modified to map vascular territories of major cerebral arteries either by selectively labeling each artery  ... 
doi:10.1002/jmri.24346 pmid:24136816 fatcat:ailfhiax3bcovnac5htzdtkffa

Distribution of cerebral blood flow in the caudate nucleus, lentiform nucleus and thalamus in patients with carotid artery stenosis

Nolan S. Hartkamp, Reinoud P. H. Bokkers, H. Bart van der Worp, M. J. P. van Osch, L. Jaap Kappelle, Jeroen Hendrikse
2010 European Radiology  
The contribution of the ICAs and the basilar artery to the perfusion of the deep brain structures was assessed by perfusion territory selective arterial spin labeling (ASL) MRI.  ...  Objective To investigate the influence of internal carotid artery (ICA) stenosis on the distribution of blood flow to the caudate nucleus, lentiform nucleus, and thalamus.  ...  Selective ASL-MRI has shown to reliably image the cortical supply of individual major brain-feeding arteries [21] .  ... 
doi:10.1007/s00330-010-1952-y pmid:20853001 pmcid:PMC3047207 fatcat:vqol37m4g5acvjkmeefn6i2qla

Quantitative Assessment of Mixed Cerebral Vascular Territory Supply With Vessel Encoded Arterial Spin Labeling MRI

A. P. Kansagra, E. C. Wong
2008 Stroke  
The supply fraction method allowed quantification of mixed territorial supply arising from collateral flow and showed vascular supply changes in a patient with carotid artery stenosis after endarterectomy  ...  and Purpose-Recent advances in arterial spin labeling MRI have permitted noninvasive evaluation of vascular territories.  ...  Source of Funding This work was supported in part by the National Institutes of Health (R01 EB002096). Disclosures None.  ... 
doi:10.1161/strokeaha.108.515767 pmid:18703809 fatcat:fescgxqjsbgf5arub4fwxqobrm

Development of a globally optimised model of the cerebral arteries [article]

Jonathan Keelan, Emma M.L. Chung, James P. Hague
2018 arXiv   pre-print
In addition to local adherence to fluid dynamics optimisation principles, the optimised vasculature reproduces global brain perfusion territories with well defined boundaries between anterior, middle and  ...  The model is validated through comparison of this ideal, entirely optimised, brain vasculature with the known structure of real arteries.  ...  Major arteries supplying the brain emerge from the Circle of Willis (CoW), a ringlike arrangement of arteries positioned at the base of the brain.  ... 
arXiv:1807.11513v2 fatcat:ccqrbjyzkratlnanxx3c4espzm

Magnetic Resonance Evaluation of the Cerebral Circulation in Obstructive Arterial Disease

Peter Jan van Laar, Jeroen van der Grond, Willem P.T.M. Mali, Jeroen Hendrikse
2006 Cerebrovascular Diseases  
In addition, selective ASL MRI is able to evaluate the perfused territories of individual brain-feeding arteries.  ...  Results: Three levels of cerebral circulation are distinguished: blood fl ow to the brain (level 1); the distribution of blood fl ow in the brain (level 2), and fi nally perfusion of the brain (level 3  ...  Flow to the Brain (1st Level) Adequate blood fl ow in the major brain-feeding arteries in the neck is the basis of maintaining cerebral blood fl ow (CBF).  ... 
doi:10.1159/000091534 pmid:16490938 fatcat:nxhz7dpxqfd43inojqws3ycymm

Integration of jugular venous return and circle of Willis in a theoretical human model of selective brain cooling

Matthew A. Neimark, Angelos-Aristeidis Konstas, Andrew F. Laine, John Pile-Spellman
2007 Journal of applied physiology  
Incorporation of the complete CoW resulted in a similar level of hypothermia in the ICA territory.  ...  ICSI induced moderate hypothermia (defined as 32-34°C) in the internal carotid artery (ICA) territory within 5 min.  ...  The baseline flow rates in the feeding arteries of the present model were within the range of values reported in the literature.  ... 
doi:10.1152/japplphysiol.00542.2007 pmid:17761787 fatcat:vrakjqstubazjmghrchuxdiz3y

Off-resonance correction for pseudo-continuous arterial spin labeling using the optimized encoding scheme

Eleanor S.K. Berry, Peter Jezzard, Thomas W. Okell
2019 NeuroImage  
phase offsets due to off-resonance at the locations of the feeding arteries within the labeling plane.  ...  The application of the proposed correction restored SNR efficiency to levels present in the absence of off-resonance effects and corrected errors in the vascular territory maps derived from VEPCASL.  ...  TO is supported by the Royal Academy of Engineering. PJ is supported by the NIHR Oxford Biomedical Research Centre.  ... 
doi:10.1016/j.neuroimage.2019.05.083 pmid:31158481 pmcid:PMC6892252 fatcat:34x4aa52f5hohnw7ed34qvxcha

Cerebral angiography, blood flow and vascular reactivity in progressive hypertension

Yunxia Li, Qiang Shen, Shiliang Huang, Wei Li, Eric R. Muir, Justin A. Long, Timothy Q. Duong
2015 NeuroImage  
The territory with negative hypercapnia CBF responses corresponded with the severity of stenosis in arteries that supplied those territories.  ...  brain regions using arterial-spin-labeling technique in spontaneously hypertensive rats (SHR) at different stages.  ...  Acknowledgement This work was supported in part by the NIH (NS45879) the American Heart Association (EIA 0940104N), a Pilot Award, Translational Technology Research Award from the Clinical Translational  ... 
doi:10.1016/j.neuroimage.2015.02.053 pmid:25731987 pmcid:PMC4387081 fatcat:4pwglouoqjbeddimh33anbhfgq

The major cerebral arteries proximal to the Circle of Willis contribute to cerebrovascular resistance in humans

Esther AH Warnert, Emma C Hart, Judith E Hall, Kevin Murphy, Richard G Wise
2015 Journal of Cerebral Blood Flow and Metabolism  
However, whether this increase in resistance occurs at the level of major cerebral arteries as well as at the level of smaller pial arterioles is still unknown in humans.  ...  short inversion time pulsed arterial spin labelling to map arterial blood volume at different phases of the cardiac cycle.  ...  However, controversy exists where in the cerebrovascular tree this increased resistance occurs; at the level of the smaller pial arterioles, the major brain feeding arteries or a combination of both.  ... 
doi:10.1177/0271678x15617952 pmid:26661241 pmcid:PMC4976750 fatcat:w5dnuowxsjd3jgryureg5zdjni
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