138 Hits in 3.9 sec

Stroke Lesion Segmentation Using a Probabilistic Atlas of Cerebral Vascular Territories [chapter]

Alexandra Derntl, Claudia Plant, Philipp Gruber, Susanne Wegener, Jan S. Bauer, Bjoern H. Menze
2016 Lecture Notes in Computer Science  
In this study, we propose to amend the standard atlas-based generative image segmentation model by a spatial atlas of stroke lesion occurrence by making use of information about the vascular territories  ...  As the territories of the major arterial trees often coincide with the location and extensions of large stroke lesions, we use 3D maps of the vascular territories to form patient-specific atlases combined  ...  Fig. 2.4 and 2.4 show the main approach we used to construct the lesion prior out of the cerebral vascular territory atlas. 3 Results We applied our stroke lesion segmentation framework onto 13 different  ... 
doi:10.1007/978-3-319-30858-6_3 fatcat:m4eimgvdtzerdiuhl6qosb6xfy

Digital 3D Brain MRI Arterial Territories Atlas [article]

Chin-Fu Liu, Johnny Hsu, Xin Xu, Nicholas G Kim, Shannon Sheppard, Erin Meier, Michael Miller, Argye E Hillis, Andreia V Faria
2021 bioRxiv   pre-print
We created a digital arterial territory atlas based on lesion distributions in 1,298 patients with acute stroke.  ...  The locus and extent of brain damage in the event of vascular insult can be quantitatively established quickly and easily with vascular atlases.  ...  To remedy the limitations of existing vascular atlases, we created a novel whole-brain arterial territory atlas based on lesion distributions in 1,298 patients with acute stroke.  ... 
doi:10.1101/2021.05.03.442478 fatcat:j3mqugewaje75c6zt26my5qjnu

Three dimensional simulations of embolic stroke: clinical comparisons and an equation for sizing emboli from imaging [article]

James P. Hague, Jonathan Keelan, Lucy Beishon, David Swienton, Thompson G. Robinson, Emma M.L. Chung
2022 arXiv   pre-print
Probabilistic lesion overlap maps were created, confirming the MCA territory as the most probable resting place of emboli in the computational vasculature, followed by the PCA then ACA.  ...  Simulations of large single emboli reproduced similar middle cerebral artery (MCA), posterior cerebral artery (PCA) and anterior cerebral artery (ACA) lesions to those observed clinically.  ...  The Anatomical Tracings of Lesions After Stroke (ATLAS) dataset (a large open access database of 304 manually segmented T1-weighted MRI stroke images [29] ) was reviewed by one researcher (LB).  ... 
arXiv:2110.15141v2 fatcat:k6bqbqmmovd7fgaxhfq4225xky

Boundary and vulnerability estimation of the internal borderzone using ischemic stroke lesion mapping

Sylvain Grange, Rémi Grange, Pierre Garnier, Jérôme Varvat, Doina Marinescu, Fabrice-Guy Barral, Claire Boutet, Fabien C. Schneider
2020 Scientific Reports  
First, we used delineated lesions of 122 patients suffering of chronic ischemic stroke grouped in deep, superficial and territorial topographies and statistical comparisons to generate a probabilistic  ...  Distinction between deep and superficial middle cerebral artery (MCA) territories and their junctional vascular area (the internal borderzone or IBZ) constitutes a predictor of stroke patient outcome.  ...  Acknowledgements This work was funded by a grant of the French ministry of health (EDEPI PHRC). Author contributions  ... 
doi:10.1038/s41598-020-58480-y pmid:32015357 fatcat:le6rvkgucrasflkndol5teo6wm

Mapping the Supratentorial Cerebral Arterial Territories Using 1160 Large Artery Infarcts

Dong-Eog Kim, Jong-Ho Park, Dawid Schellingerhout, Wi-Sun Ryu, Su-Kyoung Lee, Min Uk Jang, Sang-Wuk Jeong, Jeong-Yong Na, Jung E. Park, Eun Ja Lee, Ki-Hyun Cho, Joon-Tae Kim (+20 others)
2019 JAMA Neurology  
Cerebral vascular territories are of key clinical importance in patients with stroke, but available maps are highly variable and based on prior studies with small sample sizes.  ...  However, the atlas also informs that the lesions could belong to a single vascular territory, ie, the MCA territory.  ...  Conclusions We have generated a high-resolution digital atlas of supratentorial infarction using DWIs of 1160 patients with acute LAA stroke.  ... 
doi:10.1001/jamaneurol.2018.2808 pmid:30264158 pmcid:PMC6439879 fatcat:di7eej5bhzaqtesuk3vzv6ibbm

Voxel-wise density-based clustering of infarct lesions topographic distribution: The first step towards a stroke atlas for the brain

Yanlu Wang, Julia M. Juliano, Sook-Lei Liew, Alexander M. McKinney, Seyedmehdi Payabvash
2019 NeuroImage: Clinical  
In this study, we applied a data-driven approach to construct a stroke atlas of the brain using hierarchical density clustering in large number of infarct lesions, assuming that voxels/regions supplied  ...  The supply territories of main cerebral arteries are predominantly identified based on distribution of infarct lesions in patients with large arterial occlusion; whereas, there is no consensus atlas regarding  ...  Discussion Using a dataset of 793 infarct lesions, we have devised a stroke-atlas for the brain applying a hierarchical cluster subdivision scheme based on cluster size for exploratory analysis.  ... 
doi:10.1016/j.nicl.2019.101981 pmid:31473544 pmcid:PMC6728875 fatcat:m4qt57na2rbuhnmjlmhkt2t2fu

Digital Map of Posterior Cerebral Artery Infarcts Associated With Posterior Cerebral Artery Trunk and Branch Occlusion

T. G. Phan, MBBS, FRACP, A. C. Fong, G. Donnan, D. C. Reutens
2007 Stroke  
This approach is useful for establishing the spatial distribution of strokes in a given cerebral arterial territory and determining the regions within the arterial territory that are at greatest risk of  ...  Conclusions-We have created a probabilistic digital atlas of the PCA based on subacute magnetic resonance scans.  ...  a digital probabilistic atlas of PCA infarcts (DA-PCA) from T 2 -weighted MR imaging scans in patients with occlusion of the PCA trunk and/or P1 or P2 segments on MR angiograms.  ... 
doi:10.1161/strokeaha.106.477000 pmid:17478743 fatcat:hmviu2vemra2rhuvb3mjhamjtu

Generative lesion pattern decomposition of cognitive impairment after stroke

Anna K Bonkhoff, Jae-Sung Lim, Hee-Joon Bae, Nick A Weaver, Hugo J Kuijf, J Matthijs Biesbroek, Natalia S Rost, Danilo Bzdok
2021 Brain Communications  
Cognitive impairment is a frequent and disabling sequela of stroke.  ...  There is however incomplete understanding of how lesion topographies in the left and right cerebral hemisphere brain interact to cause distinct cognitive deficits.  ...  We are grateful to Parashkev Nachev and Michel Thiebaut de Schotten for discussion and feedback on a previous version of this manuscript.  ... 
doi:10.1093/braincomms/fcab110 pmid:34189457 pmcid:PMC8233115 fatcat:lrjvjkr2gnh3lbicn4isanpaty

Connectome-based lesion-symptom mapping (CLSM): A novel approach to map neurological function

Ezequiel Gleichgerrcht, Julius Fridriksson, Chris Rorden, Leonardo Bonilha
2017 NeuroImage: Clinical  
atlas) and the array of behavioral performance seen in patients with brain injury: connectome-based lesion-symptom mapping (CLSM).  ...  Keywords: Voxel-based lesion-symptom mapping Connectomics Diffusion tensor imaging Connectome-based lesion-symptom mapping A B S T R A C T Lesion-symptom mapping is a key tool in understanding the relationship  ...  necrosis (i.e. within the stroke lesion), use of probabilistic tractography and gray matter seeding in areas of residual (non-lesioned) cortex.  ... 
doi:10.1016/j.nicl.2017.08.018 pmid:28884073 pmcid:PMC5581860 fatcat:of6mhraefvhvldhpqdx7qnwpde

Ischemic infarct detection, localization, and segmentation in noncontrast CT human brain scans: review of automated methods

Wieslaw L. Nowinski, Jerzy Walecki, Gabriela Półtorak-Szymczak, Katarzyna Sklinda, Bartosz Mruk
2020 PeerJ  
Noncontrast Computed Tomography (NCCT) of the brain has been the first-line diagnosis for emergency evaluation of acute stroke, so a rapid and automated detection, localization, and/or segmentation of  ...  ischemic lesions is of great importance.  ...  These ROIs are derived from two atlases, an atlas of anatomy and an atlas of blood supply territories, which are in spatial correspondence (Nowinski et al., 2006b) .  ... 
doi:10.7717/peerj.10444 pmid:33391867 pmcid:PMC7759129 fatcat:tm3bw52gtjgh5fvw3i4o3i3zma

Evaluating the granularity and statistical structure of lesions and behaviour in post-stroke aphasia [article]

Ying Zhao, Ajay D. Halai, Matthew A. Lambon Ralph
2019 bioRxiv   pre-print
As a preliminary exploration, stepwise regression was used to relate behavioural factor scores to the lesion principal components.  ...  of middle cerebral artery sub-branches and other sources of individual variation in vascular supply as shown in classical angiography studies.  ...  Acknowledgements We thank all the patients and carers for their continued support of our research programme.  ... 
doi:10.1101/802595 fatcat:qdp7yej47nb5fp7icbpl3j6r2u

A large, open source dataset of stroke anatomical brain images and manual lesion segmentations

Sook-Lei Liew, Julia M. Anglin, Nick W. Banks, Matt Sondag, Kaori L. Ito, Hosung Kim, Jennifer Chan, Joyce Ito, Connie Jung, Nima Khoshab, Stephanie Lefebvre, William Nakamura (+23 others)
2018 Scientific Data  
We hope ATLAS release 1.1 will be a useful resource to assess and improve the accuracy of current lesion segmentation methods.  ...  Here we present ATLAS (Anatomical Tracings of Lesions After Stroke), an open-source dataset of 304 T1-weighted MRIs with manually segmented lesions and metadata.  ...  The archiving of this dataset was specifically supported by the NIH-funded Center for Large Data Research and Data Sharing in Rehabilitation (CLDR; https://www. under a Category 2 Pilot  ... 
doi:10.1038/sdata.2018.11 pmid:29461514 pmcid:PMC5819480 fatcat:tywgzbfcg5bprhvl7rxtdggfw4

Generative lesion pattern decomposition of cognitive impairment after stroke [article]

Anna K. Bonkhoff, Jae-Sung Lim, Hee-Joon Bae, Nick A. Weaver, Hugo J. Kuijf, J. Matthijs Biesbroek, Natalia S. Rost, Danilo Bzdok
2020 bioRxiv   pre-print
SummaryCognitive impairment is a frequent and disabling sequela of stroke.  ...  There is however incomplete understanding of how lesion topographies in the left and right cerebral hemisphere brain interact to cause distinct cognitive deficits.  ...  Kancheva and Gözdem Arikan for their help with performing the manual infarct segmentations.  ... 
doi:10.1101/2020.08.22.262873 fatcat:gb53zudf6rg4jfqu27nhn5te3a

Resting-State Functional Connectivity Magnetic Resonance Imaging and Outcome After Acute Stroke

Josep Puig, Gerard Blasco, Angel Alberich-Bayarri, Gottfried Schlaug, Gustavo Deco, Carles Biarnes, Marian Navas-Martí, Mireia Rivero, Jordi Gich, Jaume Figueras, Cristina Torres, Pepus Daunis-i-Estadella (+14 others)
2018 Stroke  
After imaging preprocessing, we used a whole-brain mask to calculate the correlation coefficient matrices for every paired region using the Harvard-Oxford probabilistic atlas.  ...  and Purpose- Physiological effects of stroke are best assessed over entire brain networks rather than just focally at the site of structural damage.  ...  Lesion Analysis Infarct localization, laterality, and vascular territory involved were determined by MRI on day 3 after symptom onset ( Figure 1 ).  ... 
doi:10.1161/strokeaha.118.021319 pmid:30355087 pmcid:PMC6645916 fatcat:epvnqebtkfffliqpsxgdpqzma4

The Existence and Evolution of Diffusion-Perfusion Mismatched Tissue in White and Gray Matter After Acute Stroke

M. Koga, D. C. Reutens, P. Wright, T. Phan, R. Markus, B. Pedreira, G. Fitt, I. Lim, G. A. Donnan
2005 Stroke  
Tissue was segmented using a probabilistic atlas generated from age-matched controls.  ...  and Purpose-Although white matter is a potential target of acute stroke therapy, there is uncertainty about its relative resistance to ischemia and whether it is capable of mounting a penumbral response  ...  The National Institute of Health Stroke Scale (NIHSS) and affected vascular territories (anterior cerebral artery, middle cerebral artery, and/or posterior cerebral artery) were recorded on admission.  ... 
doi:10.1161/01.str.0000181066.23213.8f pmid:16151036 fatcat:lpjrammu5fa6vl7aa3i347yvkm
« Previous Showing results 1 — 15 out of 138 results