Objective—Adiponectin and resistin are adipokines that are linked to obesity, inflammation, and atherosclerosis. F-Fluorodeoxyglucose (FDG) positron emission tomography is a promising imaging technique that can be used to evaluate vascular inflammation. Methods and Results—We measured adiponectin and resistin levels, as well as traditional cardiovascular risk factors, in 60 obese subjects and 6...

The actions of marijuana (cannabis) are mediated by receptors (primarily the cannabinoid CB1 receptor) that have unusually high density and wide distribution in brain. In addition to mediating the effects of exogenous drugs like cannabis, these receptors also receive signals from endogenous cannabinoids (endocannabinoids), which modulate the release of several other neurotransmitters. Since abn...

T. Kato J. Shinoda N. Nakayama K. Miwa A. Okumura H. Yano S. Yoshimura T. Maruyama Y. Muragaki T. Iwama BACKGROUND AND PURPOSE: Positron-emission tomography (PET) is a useful tool in oncology. The aim of this study was to assess the metabolic activity of gliomas using C-methionine (MET), [F] fluorodeoxyglucose (FDG), and C-choline (CHO) PET and to explore the correlation between the metabolic a...

Background Experimental studies have shown that fractional flow reserve (defined as the ratio of maximal achievable flow in a stenotic area to normal maximal achievable flow) can be calculated from coronary pressure measurements only. The objectives of this study were to validate fractional flow reserve calculation in humans and to compare this information with that derived from quantitative co...

Positron emission tomography (PET) scans use positrons, positively charged particles, to detect metabolic and chemical changes in the body. Although the clinical applications of this technology still are evolving, PET scans are being used to detect cancer and evaluate neurologic disorders, heart muscle function, and response to treatment. In oncology, PET scans may be used to determine biopsy l...

The current article presents theory for compartmental models used in positron emission tomography (PET). Both plasma input models and reference tissue input models are considered. General theory is derived and the systems are characterized in terms of their impulse response functions. The theory shows that the macro parameters of the system may be determined simply from the coefficients of the ...

Igle J. de Jong *, Anthonius J. Breeuwsma , Jan Pruim b Department of Urology, University Medical Center Groningen, University of Groningen, PO Box 30001, NL 9700 RG Groningen, The Netherlands Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, PO Box 30001, NL 9700 RG Groningen, The Netherlands avai lab le at www.sciencedi rect .c...

We describe a simple experimental arrangement for emission tomographic measurements of radicals in flames. Experimental determinations of two-dimensional spatially resolved distributions of excited-state CH in atmospheric-pressure flames are presented. Calibration of the distributions to absolute number densities is performed with a Rayleigh scattering technique. Methods for simultaneous record...

INTRODUCTION Diagnosis of Takayasu's arteritis as the cause of stroke is often delayed because of non-specific clinical presentation. F-18-fluorodeoxyglucose positron emission tomography-computed tomography may help to accurately diagnose and monitor Takayasu's arteritis in stroke patients. CASE PRESENTATION We report the case of a left middle cerebral artery stroke in a 39-year-old man. Labo...