MR spectroscopy
GABA Based Evaluation of Neurologic Conditions: MR Spectroscopy
... current MR spectroscopy methods con- cerns the difficulty of comparing levels of GABA among subjects or in disease ...in MR spectroscopy are the imprecise nature of some ROIs selected to ...
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MR Imaging, MR Spectroscopy, and Diffusion Tensor Imaging of Sequential Studies in Neonates with Encephalopathy
... The MR spectroscopy timings and voxel localization were chosen to maximize the detection of lactate and to minimize the spectral contamination from extracra- nial adipose ...the MR ...
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Clinical applications of proton MR spectroscopy
... (MR) spectroscopy has received little attention from the clinical radiol- ogy ...most MR spectro- scopic studies are performed by a small and dedicated group of individuals, mostly basic ...because ...
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Proton MR spectroscopy of childhood adrenoleukodystrophy
... proton MR spectroscopy to monitor patients with child- hood-onset cerebral adrenoleukodystrophy ...Single-voxel MR spectros- copy was performed in 16 children with COCALD (24 examinations) who had ...
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MR Spectroscopy of Bilateral Thalamic Gliomas
... troscopy reference values. The proton MR spectroscopy values for the BTGs were compared with those observed in the grade I and II glioma group. We assumed a gaussian distribution for the values from the ...
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Proton MR Spectroscopy of Gliomatosis Cerebri: Case Report of Elevated Myoinositol with Normal Choline Levels
... Conventional MR imaging shows a diffuse signal intensity abnormality with minimal or no mass effect and a lack of contrast ...and MR imaging findings may suggest infiltrative neoplasm, they are not ...
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Subcortical Ischemic Vascular Dementia: Assessment with Quantitative MR Imaging and 1H MR Spectroscopy
... segmented MR images. Finally, we selected a small number of MR spectroscopy vox- els from different brain regions, which usually in- clude varying amounts of gray matter and white matter because of ...
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Proton MR Spectroscopy of Polymicrogyria and Heterotopia
... Gray matter heterotopia is a collection of neurons and glia in abnormal locations secondary to arrest of migration of neurons. Histologic study shows normal- appearing neurons and evidence of active synapses (14). At ...
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Higher Field Strength for Proton MR Spectroscopy
... At 1.5 T, metabolite ratios of moderately cogni- tively impaired patients fell, as expected, between the elderly control subjects and those with Alzheimer disease, an additional indication of the intermediate nature of ...
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MR imaging and localized proton MR spectroscopy in late infantile neuronal ceroid lipofuscinosis
... T2-weighted MR images and a virtual absence of NAA in severely affected areas, increased mI, and positive lactate on MR ...Therefore, MR spectroscopy can give additional hints to the diagnosis ...
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Anomalous J Modulation Effects on Amino Acids in Clinical 3T MR Spectroscopy
... igh-field MR imaging systems such as 3T strength aid in the detection of brain metabolites due to increased sensi- ...of MR spectroscopy at high- field MR imaging systems is the anomalous ...
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MR Imaging and Proton MR Spectroscopy in Adult Krabbe Disease
... Brain MR imaging revealed symmetrical hyperintensity on proton density– and T2-weighted images along the corticospi- nal tracts, extending from the subcortical white matter of the upper rolandic area down to the ...
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Marchiafava Bignami Disease: Longitudinal MR Imaging and MR Spectroscopy Study
... with MR imaging and MR spectroscopy at 1, 2, 4, and 11 months after the onset of ...first MR imaging study showed extensive abnormal signal inten- sity of the corpus callosum without ...
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Correlation of MR Imaging and MR Spectroscopy Findings with Cognitive Impairment in Mucopolysaccharidosis II
... were 11 years or older) by a psy- chologist (A.P.P.) who was expe- rienced in development neurol- ogy. According to the study protocol, patients were classified either as presenting CI (group A) or not (group B). CI was ...
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Proton MR Spectroscopy of Tumefactive Demyelinating Lesions
... point-resolved spectroscopy (PRESS) double spin-echo scheme for the preselection of a VOI that was usually defined to include the abnormality as well as normal brain tissue, when ...
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Proton MR spectroscopy of pediatric cerebellar tumors
... and MR are the primary diag- nostic imaging methods for initial diagnosis of brain tumors before surgery, MR spectroscopy may further increase the diagnostic accuracy and ...from MR and CT at ...
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Proton MR spectroscopy and neuropsychological testing in adrenoleukodystrophy
... of MR spectroscopic metabo- lite ratios of normal-appearing regions with neu- ropsychological data helps to confirm that MR spectroscopic changes may herald the onset of disease before abnormalities are ...
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1H MR Spectroscopy in the Human Spinal Cord
... by MR spectroscopy may often pre- vent unnecessary invasive interventions, thus avoiding further negative impact on patient ...ment. MR spectroscopy quantifies multiple metabolite concen- ...
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Multivoxel Proton MR Spectroscopy in Malformations of Cortical Development
... MR spectroscopy protocol included a multivoxel acquisition by using a point-resolved spectroscopy sequence technique with the following pa- rameters: section thickness ⫽ 10 mm, TR ⫽ 1500 ms, TE ⫽ 135 ...
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MR Spectroscopy in Radiation Injury
... Measurements of Metabolites and Ratio Calculations One of the major problems when reviewing the literature and comparing existing MR spectroscopy data is the use of various ways of calculating metabolite ...
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