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Joel H. Greenberg

Researcher at University of Pennsylvania

Publications -  220
Citations -  11574

Joel H. Greenberg is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Cerebral blood flow & Ischemia. The author has an hindex of 54, co-authored 218 publications receiving 10924 citations. Previous affiliations of Joel H. Greenberg include University of Miami & University of Texas Health Science Center at San Antonio.

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The [18F]fluorodeoxyglucose method for the measurement of local cerebral glucose utilization in man.

TL;DR: A mathematical model and derived operational equation are used which enable local cerebral glucose consumption to be calculated in terms of the following measurable variables: gray matter, white matter, and whole brain metabolic rates, calculated as a weighted average based on the approximate volume of each structure.
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Magnetic resonance imaging of glutamate

TL;DR: In a rat brain tumor model with blood-brain barrier disruption, intravenous glutamate injection resulted in a clear elevation of GluCEST and a similar increase in the proton magnetic resonance spectroscopy signal of glutamate, demonstrating the feasibility of using GLUCEST for mapping relative changes in glutamate concentration, as well as pH, in vivo.
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Glucose metabolic rate kinetic model parameter determination in humans: the lumped constants and rate constants for [18F]fluorodeoxyglucose and [11C]deoxyglucose.

TL;DR: Using the rate constants and lumped constants determined in humans for the glucose metabolic rate kinetic model used to measure local cerebral glucose consumption, the average whole-brain metabolic rates for glucose in normal subjects measured with [18F]FDG and [11C]DG are 5.66 ± 0.37 (n = 6) and 4.99 mg/100 g/min, respectively.
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Diffuse optical tomography of cerebral blood flow, oxygenation, and metabolism in rat during focal ischemia.

TL;DR: The authors report DOT images of hemodynamic and metabolic contrasts using a rat middle cerebral artery occlusion (MCAO) stroke model, and demonstrates how these hemodynamic measures can be synthesized to calculate an index of the oxygen extraction fraction (OEF) and the cerebral metabolic rate of oxygen consumption (CMRo2).
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Diffuse optical measurement of blood flow, blood oxygenation, and metabolism in a human brain during sensorimotor cortex activation.

TL;DR: The feasibility for noninvasive optical measurement of blood flow through the skull of an adult brain is demonstrated, and the clinical potential of this hybrid, all-optical nonin invasive, methodology can now be explored.