Search Results - "Astrakas, L G"

Investigation of Unmedicated Early Onset Restless Legs Syndrome by Voxel-Based Morphometry, T2 Relaxometry, and Functional MR Imaging during the Night-Time Hours by MARGARITI, P. N, ASTRAKAS, L. G, TSOULI, S. G, HADJIGEORGIOU, G. M, KONITSIOTIS, S, ARGYROPOULOU, M. I

“…The pathophysiology of eRLS has not yet been elucidated. The purpose of the study was to assess, in patients with eRLS, the volume, iron content, and…”
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T2 relaxometry and fMRI of the brain in late-onset restless legs syndrome by ASTRAKAS, L. G, KONITSIOTIS, S, MARGARITI, P, TSOULI, S, TZAROUHI, L, ARGYROPOULOU, M. I

“…To assess in patients with late-onset idiopathic restless legs syndrome (RLS) the brain iron content with magnetic resonance relaxometry, and brain activation…”
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Age-related grey matter changes in preterm infants: An MRI study by Tzarouchi, L.C., Astrakas, L.G., Xydis, V., Zikou, A., Kosta, P., Drougia, A., Andronikou, S., Argyropoulou, M.I.

“…Grey matter (GM) maturation has not been previously studied in healthy preterm children. The purpose of this study was to evaluate the age dependency of GM…”
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Voxel-based diffusion tensor imaging detects pyramidal tract degeneration in primary lateral sclerosis by TZAROUCHI, L. C, KYRITSIS, A. P, GIANNOPOULOS, S, ASTRAKAS, L. G, DIAKOU, M, ARGYROPOULOU, M. I

“…Primary lateral sclerosis (PLS) is a progressive degenerative disorder affecting upper motor neurons and requires a clinical diagnosis. Diffusion tensor…”
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Is Low-Grade Intraventricular Hemorrhage in Very Preterm Infants an Innocent Condition? Structural and Functional Evaluation of the Brain Reveals Regional Neurodevelopmental Abnormalities by Argyropoulou, M I, Astrakas, L G, Xydis, V G, Drougia, A, Mouka, V, Goel, I, Giapros, V, Andronikou, S

“…There is increasing evidence of abnormal neurodevelopmental outcomes in very preterm infants with low-grade intraventricular hemorrhage grades I and II. Our…”
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Multiparametric MR assessment of pediatric brain tumors by TZIKA, A. A, ASTRAKAS, L. G, ZARIFI, M. K, PETRIDOU, N, YOUNG-POUSSAINT, T, GOUMNEROVA, L, ZURAKOWSKI, D, ANTHONY, D. C, BLACK, P. Mcl

“…MR assessment of pediatric brain tumors has expanded to include physiologic information related to cellular metabolites, hemodynamic and diffusion parameters…”
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Re: Brain SPECT and perfusion MRI: do they provide complementary information about the tumour lesion and its grading? by Tsiouris, S., Alexiou, G.A., Argyropoulou, M.I., Zikou, A.K., Astrakas, L.G., Fotopoulos, A.D.

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White matter water diffusion changes in primary Sjögren syndrome by Tzarouchi, L C, Zikou, A K, Tsifetaki, N, Astrakas, L G, Konitsiotis, S, Voulgari, P, Drosos, A, Argyropoulou, M I

“…Histopathologic studies have demonstrated WM damage in primary Sjögren syndrome. The purpose of this study was to evaluate WM microstructural changes by use of…”
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Proton magnetic spectroscopic imaging of the child's brain : the response of tumors to treatment by TZIKA, A. A, ZURAKOWSKI, D, BLACK, P. Mcl, POUSSAINT, T. Young, GOUMNEROVA, L, ASTRAKAS, L. G, BARNES, P. D, ANTHONY, D. C, BILLETT, A. L, TARBELL, N. J, SCOTT, R. M

“…Our aim was to determine and/or predict response to treatment of brain tumors in children using proton magnetic resonance spectro-scopic imaging (MRSI). We…”
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MRI and 1H MRS findings in Smith-Lemli-Opitz syndrome by CARUSO, P. A, POUSSAINT, T. Y, TZIKA, A. A, ZURAKOWSKI, D, ASTRAKAS, L. G, ELIAS, E. R, BAY, C, IRONS, M. B

“…Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive disorder characterized by a defect in cholesterol biosynthesis, associated with mental retardation…”
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Diffuse periventricular leukomalacia in preterm children: assessment of grey matter changes by MRI by Tzarouchi, L. C., Xydis, V., Zikou, A. K., Drougia, A., Astrakas, L. G., Papastefanaki, M., Andronikou, S., Argyropoulou, Maria I.

“…Background Preterm children may have cognitive deficits and behavioural disorders suggestive of grey matter (GM) injury. The prevalence is higher in preterm…”
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Predicting survival of children with CNS tumors using proton magnetic resonance spectroscopic imaging biomarkers by MARCUS, Karen J, ASTRAKAS, Loukas G, ARIA TZIKA, A, ZURAKOWSKI, David, ZARIFI, Maria K, MINTZOPOULOS, Dionyssios, TINA YOUNG POUSSAINT, ANTHONY, Douglas C, DE GIROLAMI, Umberto, BLACK, Peter Mcl, TARBELL, Nancy J

“…Using brain proton magnetic resonance spectroscopic imaging (MRSI) in children with central nervous system (CNS) tumors, we tested the hypothesis that…”
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Burn Injury Causes Mitochondrial Dysfunction in Skeletal Muscle by Padfield, Katie E., Astrakas, Loukas G., Zhang, Qunhao, Gopalan, Suresh, Dai, George, Mindrinos, Michael N., Tompkins, Ronald G., Rahme, Laurence G., Tzika, A. Aria, Davis, Ronald W.

“…Severe burn trauma is generally followed by a catabolic response that leads to muscle wasting and weakness affecting skeletal musculature. Here, we perform…”
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Noninvasive Magnetic Resonance Spectroscopic Imaging Biomarkers to Predict the Clinical Grade of Pediatric Brain Tumors by ASTRAKAS, Loukas G, ZURAKOWSKI, David, TZIKA, A. Aria, ZARIFI, Maria K, ANTHONY, Douglas C, DE GIROLAMI, Umberto, TARBELL, Nancy J, BLACK, Peter Mclaren

“…The diagnosis and therapy of childhood brain tumors, most of which are low grade, can be complicated because of their frequent adjacent location to crucial…”
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Spectroscopic and perfusion magnetic resonance imaging predictors of progression in pediatric brain tumors by Tzika, A. Aria, Astrakas, Loukas G., Zarifi, Maria K., Zurakowski, David, Poussaint, Tina Young, Goumnerova, Liliana, Tarbell, Nancy J., Black, Peter McL

“…BACKGROUND In vivo biomarkers to predict progression of brain tumors are of great value in clinical practice. Therefore, the authors tested the hypothesis that…”
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Prediction of adverse outcome with cerebral lactate level and apparent diffusion coefficient in infants with perinatal asphyxia by Zarifi, Maria K, Astrakas, Loukas G, Poussaint, Tina Young, Plessis Ad, Adré du, Zurakowski, David, Tzika, A Aria

“…To compare the predictive value for adverse outcome of quantitative cerebral lactate level and of apparent diffusion coefficient (ADC) in infants with…”
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Biochemical characterization of pediatric brain tumors by using in vivo and ex vivo magnetic resonance spectroscopy by TZIKA, A. Aria, LEO LING CHENG, MCL.BLACK, Peter, GOUMNEROVA, Liliana, MADSEN, Joseph R, ZURAKOWSKI, David, ASTRAKAS, Loukas G, ZARIFI, Maria K, SCOTT, R. Michael, ANTHONY, Douglas C, GONZALEZ, R. Gilberto

“…Magnetic resonance (MR) spectroscopy provides biochemical information about tumors. The authors sought to determine the relationship between in vivo and ex…”
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Magnetic Resonance Spectroscopy and Magnetic Resonance Imaging Findings in Krabbe's Disease by Zarifi, Maria K., Tzika, A. Aria, Astrakas, Loukas G., Young Poussaint, Tina, Anthony, Douglas C., Darras, Basil T.

“…Two twins with late infantile globoid cell leukodystrophy or Krabbe's disease were studied with conventional magnetic resonance imaging (MRI) and proton…”
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Neuroimaging in Pediatric Brain Tumors: Gd-DTPA-enhanced, Hemodynamic, and Diffusion MR Imaging Compared with MR Spectroscopic Imaging by Tzika, A. Aria, Zarifi, Maria K, Goumnerova, Liliana, Astrakas, Loukas G, Zurakowski, David, Young-Poussaint, Tina, Anthony, Douglas C, Scott, R. Michael, Black, Peter McL

“…Gadolinium-enhanced MR images assist in defining tumor borders; however, the relation between tumor cell extent and contrast-enhanced regions is unclear. Our…”
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Proton NMR spectroscopy shows lipids accumulate in skeletal muscle in response to burn trauma-induced apoptosis by Astrakas, Loukas G, Goljer, Igor, Yasuhara, Shingo, Padfield, Katie E, Zhang, Qunhao, Gopalan, Suresh, Mindrinos, Michael N, Dai, George, Yu, Yong-Ming, Martyn, J. A. Jeevendra, Tompkins, Ronald G, Rahme, Laurence G, Tzika, A. Aria

“…Burn trauma triggers hypermetabolism and muscle wasting via increased cellular protein degradation and apoptosis. Proton nuclear magnetic resonance (¹H NMR)…”
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