Browsing by Author "Seimenis, Ioannis"
Now showing items 1-20 of 26
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Article
Altered Resting Functional Connectivity Is Related to Cognitive Outcome in Males With Moderate-Severe Traumatic Brain Injury
Konstantinou, Nikos; Pettemeridou, Eva; Stamatakis, Emmanuel A.; Seimenis, Ioannis; Constantinidou, Fofi (2018)TBI results in significant cognitive impairments and in altered brain functional connectivity. However, no studies explored so far, the relationship between global functional connectivity and cognitive outcome in chronic ...
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Conference Object
AM-FM texture image analysis in multiple sclerosis brain white matter lesions
Loizou, Christos P.; Murray, V.; Pattichis, Marios S.; Pantzaris, Marios C.; Seimenis, Ioannis; Pattichis, Constantinos S. (2010)In this study we investigate the use of multiscale Amplitude Modulation-Frequency Modulation (AM-FM) methods for analyzing brain white matter lesions that are associated with multiple sclerosis MRI lesions imaged at 0 and ...
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Article
Assessing the relationship between neurocognitive performance and brain volume in chronic moderate-severe traumatic brain injury
Konstantinou, Nikos; Pettemeridou, Eva; Seimenis, Ioannis; Eracleous, Eleni; Papacostas, Savvas S.; Papanicolaou, A. C.; Constantinidou, Fofi (2016)Objectives Characterize the scale and pattern of long-term atrophy in gray matter (GM), white matter (WM), and cerebrospinal fluid (CSF) in chronic moderate–severe traumatic brain injury (TBI) and its relationship to ...
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Conference Object
Brain MR image normalization in texture analysis of multiple sclerosis
Loizou, Christos P.; Pantzaris, Marios C.; Seimenis, Ioannis; Pattichis, Constantinos S. (2009)A problem that occurs in texture analysis and quantitative analysis of magnetic resonance imaging (MRI), is that the extracted results are not comparable between consecutive or repeated scans or, within the same scan, ...
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Article
Brain white matter lesion classification in multiple sclerosis subjects for the prognosis of future disability
Loizou, Christos P.; Kyriacou, Efthyvoulos C.; Seimenis, Ioannis; Pantzaris, Marios C.; Petroudi, Styliani; Karaolis, Minas A.; Pattichis, Constantinos S. (2013)This study investigates the application of classification methods for the prognosis of future disability on MRI-detectable brain white matter lesions in subjects diagnosed with clinical isolated syndrome (CIS) of multiple ...
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Article
Brain white matter lesions classification in multiple sclerosis subjects for the prognosis of future disability
Loizou, Christos P.; Kyriacou, Efthyvoulos C.; Seimenis, Ioannis; Pantzaris, Marios C.; Christodoulou, Chris C.; Pattichis, Constantinos S. (2011)This study investigates the application of classification methods for the prognosis of future disability on MRI-detectable brain white matter lesions in subjects diagnosed with clinical isolated syndrome (CIS) of multiple ...
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Conference Object
Effect of head posture changes in the geometry and hemodynamics of a healthy human carotid bifurcation
Papaharilaou, Yannis; Seimenis, Ioannis; Pattakos, N.; Ekaterinaris, J.; Georgiou, Georgios C.; Eracleous, Eleni A.; Christou, Chris; Brott, B. C.; Anayiotos, Andreas S. (2007)
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Article
Effect of head posture on the healthy human carotid bifurcation hemodynamics
Papaharilaou, Yannis; Aristokleous, Nicolas; Seimenis, Ioannis; Khozeymeh, M. I.; Georgiou, Georgios C.; Brott, B. C.; Eracleous, Eleni A.; Anayiotos, Andreas S. (2013)Head and neck postures may cause morphology changes to the geometry of the carotid bifurcation (CB) that alter the low and oscillating wall shear stress (WSS) regions previously reported as important in the development of ...
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Conference Object
Effect of head rotation at the prone position on the geometric features of the healthy carotid bifurcation
Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2010)
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Article
The Effect of Head Rotation on the Geometry and Hemodynamics of Healthy Vertebral Arteries
Aristokleous, Nicolas; Seimenis, Ioannis; Georgiou, Georgios C.; Nicolaïdes, Andrew N.; Anayiotos, Andreas S. (2015)The geometric and hemodynamic characteristics of the left and right vertebral arteries (LVA, RVA) of six healthy volunteers were investigated for the supine (S) and the prone position (P) a common sleeping posture with ...
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Conference Object
Effect of posture change on the geometric features of the healthy carotid bifurcation
Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2009)Segmented cross sectional MRI images were used to construct 3D virtual models of the carotid bifurcation in 5 healthy volunteers. Geometric features such as bifurcation angle, planarity angle, asymmetry angle tortuosity ...
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Article
Effect of posture change on the geometric features of the healthy carotid bifurcation
Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Georgiou, Georgios C.; Brott, B. C.; Eracleous, Eleni A.; Anayiotos, Andreas S. (2011)Segmented cross-sectional MRI images were used to construct 3-D virtual models of the carotid bifurcation in ten healthy volunteers. Geometric features, such as bifurcation angle, internal carotid artery (ICA) angle, ...
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Conference Object
Head posture influences the geometric and hemodynamic features on the healthy human carotid bifurcation
Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Khozeymeh, M. I.; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2012)Atherosclerosis is the third leading cause of morbidity and mortality in the Western world. Low and oscillating wall shear stress (WSS) regions have been previously reported as parameters that correlate with the development ...
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Conference Object
Head rotation effects on the flow and hemodynamics of the human carotid bifurcation
Aristokleous, Nicolas; Papaharilaou, Yannis; Seimenis, Ioannis; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2013)
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Conference Object
Head rotation influences the geometric features of the stenotic carotid bifurcation
Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Eracleous, Eleni A.; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2012)
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Article
Impact of head rotation on the individualized common carotid flow and carotid bifurcation hemodynamics
Aristokleous, Nicolas; Seimenis, Ioannis; Georgiou, Georgios C.; Papaharilaou, Yannis; Brott, B. C.; Nicolaïdes, Andrew N.; Anayiotos, Andreas S. (2014)This paper aims at evaluating the changes that head rotation poses on morphological and flow characteristics of the carotid bifurcation (CB) and on the distribution of parameters that are regarded as important in atherosclerosis ...
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Article
Multiscale amplitude-modulation frequency-modulation (AMFM) texture analysis of multiple sclerosis in brain MRI images
Loizou, Christos P.; Murray, V.; Pattichis, Marios S.; Seimenis, Ioannis; Pantzaris, Marios C.; Pattichis, Constantinos S. (2011)This study introduces the use of multiscale amplitude modulation-frequency modulation (AM-FM) texture analysis of multiple sclerosis (MS) using magnetic resonance (MR) images from brain. Clinically, there is interest in ...
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Article
A Platform Integrating Acquisition, Reconstruction, Visualization, and Manipulator Control Modules for MRI-Guided Interventions
Velazco Garcia, Jose D.; Navkar, Nikhil V.; Gui, Dawei; Morales, Cristina M.; Christoforou, Eftychios G.; Ozcan, Alpay; Abinahed, Julien; Al-Ansari, Abdulla; Webb, Andrew; Seimenis, Ioannis; Tsekos, Nikolaos V. (2019)This work presents a platform that integrates a customized MRI data acquisition scheme with reconstruction and three-dimensional (3D) visualization modules along with a module for controlling an MRI-compatible robotic ...
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Conference Object
Quantitative analysis of brain white matter lesions in multiple sclerosis subjects
Loizou, Christos P.; Pattichis, Constantinos S.; Seimenis, Ioannis; Pantzaris, Marios C. (2009)In this study the value of magnetic resonance image (MRI) shape and texture analysis was assessed in multiple sclerosis (MS) subjects, both in differentiating between normal or normal appearing and abnormal tissue and in ...
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Conference Object
Quantitative analysis of brain white matter lesions in multiple sclerosis subjects: Preliminary findings
Loizou, Christos P.; Pattichis, Constantinos S.; Seimenis, Ioannis; Eracleous, Eleni A.; Schizas, Christos N.; Pantzaris, Marios C. (2008)In this study the value of magnetic resonance image (MRI) shape and texture analysis was assessed in multiple sclerosis (MS) subjects, both in differentiating between normal and abnormal tissue and in assessing disease ...