Search

Your search keyword '"Sayre C"' showing total 8 results
Start Over Author "Sayre C" Publisher lippincott williams & wilkins
8 results on '"Sayre C"'

7. Positron emission tomography in Parkinson's disease: glucose and DOPA metabolism.

Author

Martin WR, Stoessl AJ, Adam MJ, Ammann W, Bergstrom M, Harrop R, Laihinen A, Rogers JG, Ruth TJ, and Sayre CI

Subjects
Adult, Aged, Caudate Nucleus diagnostic imaging, Cerebellum diagnostic imaging, Deoxyglucose analogs & derivatives, Deoxyglucose metabolism, Dihydroxyphenylalanine analogs & derivatives, Dihydroxyphenylalanine metabolism, Fluorodeoxyglucose F18, Humans, Middle Aged, Putamen diagnostic imaging, Blood Glucose metabolism, Brain diagnostic imaging, Levodopa metabolism, Parkinson Disease diagnostic imaging, Tomography, Emission-Computed
Published
1987

8. Scatter distribution in transmission measurements with positron emission tomography.

Author

Chan B, Bergström M, Palmer MR, Sayre C, and Pate BD

Subjects
Brain diagnostic imaging, Electrons, Humans, Image Enhancement instrumentation, Image Enhancement methods, Models, Structural, Radiation, Scattering, Radiation, Tomography, Emission-Computed instrumentation, Tomography, Emission-Computed methods
Abstract

The distribution of scattered radiation was measured for transmission scans in positron emission tomography by adding the scattered radiation distributions in different projections from line source experiments. It is shown that in a 20 cm diameter water-filled phantom the scattered radiation effects contribute approximately one-third of the events centrally in the field of view. This may lead to systematic errors of the order of 15-25% in reconstructed images. A scheme for correction for scattered radiation effects in the transmission scans is described and tested in phantom experiments.

Published
1986
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results