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Autor:
Noelwah Netusil, Nora D. Volkow, A.V. Levy, Christoph Felder, Gene-Jack Wang, Christopher Wong, Wei Zhu, Joanna S. Fowler, N. Pappas
Publikováno v:
Neuroreport. 13:1151-1155
The cerebral mechanisms underlying excess food intake in obese subjects are poorly understood. We used PET and 2-deoxy-2[18F]fluoro-D-glucose to assess differences in regional brain metabolism between obese and lean subjects at rest. Brain metabolic
Autor:
Charles S. Springer, A.V. Levy, Manoj K. Sammi, Ildiko Palyka, Nora D. Volkow, Gene-Jack Wang, Christoph Felder, Jean Logan, Xin Li, Jing-Huei Lee, Joanna S. Fowler, William D. Rooney
Publikováno v:
Magnetic Resonance in Medicine. 42:345-360
Two different types of (co-registered) images of the same slice of tissue will generally have different spatial resolutions. The judicious pixel-by-pixel combination of their data can be accomplished to yield a single image exhibiting properties of b
La méthode Galaxie, un recalage automatique en imagerie multimodalités 3D et un outil de comparaison
Publikováno v:
RBM-News. 19:40-45
Les methodes de recalage en imagerie multimodalites sont de plus en plus necessaires et demandent une rapide capacite de traitement. La methode Galaxie presentee dans ce papier est un recalage en imagerie tridimensionnelle base sur les axes principau
Publikováno v:
Psychiatry Research. 60:113-116
Several studies have reported olfactory deficits in schizophrenic patients. This study examines local cerebral metabolic rate within two cortical areas in eight normal men and eight schizophrenic men. A significantly greater degree of hypometabolism
Autor:
A.V. Levy
Publikováno v:
CORROSION. 51:872-883
The loss of material from the surface of a metal being impacted by small, solid particles carried in a flowing gas occurs by a sequence of mechanical actions. The present work, which was presented as the plenary lecture at CORROSION/95, describes the
Publikováno v:
IEEE Transactions on Biomedical Engineering. 42:1079-1087
Computerized automatic registration of MR-PET images of the brain is of significant interest for multimodality brain image analysis. In this paper, we discuss the Principal Axes Transformation for registration of three-dimensional MR and PET images.
Autor:
Louis K. Arata, M.F. Gaskil-Shipley, Nora D. Volkow, A.V. Levy, Atam P. Dhawan, Joseph P. Broderick
Publikováno v:
IEEE Transactions on Biomedical Engineering. 42:1069-1078
Model-based segmentation and analysis of brain images depends on anatomical knowledge which may be derived from conventional atlases. Classical anatomical atlases are based on the rigid spatial distribution provided by a single cadaver. Their use to
Autor:
A.V. Levy
Publikováno v:
Corrosion Science. 35:1035-1043
A review of the behavior of materials exposed to elevated-temperature, combined erosion corrosion environments, such as occur in combustion boilers, is presented. The effects of such system variables as erodent particle composition and physical chara
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 40:682-687
A short alternative derivation of the Fourier series representation of the density of the quantization error is given. The quantization error for the general Gaussian signal, N( mu , sigma /sup 2/), is considered and is analytically shown to be almos