نتایج جستجو برای: f 18 fdg petct
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Vascular prosthetic graft infection (VPGI) is a severe complication after vascular surgery. CT-scan is considered the diagnostic tool of choice in advanced VPGI. The incidence of a false-negative result using CT is relatively high, especially in the presence of low-grade infections. (18)F-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) scanning has been suggested as an alternati...
Background. The use of 2-[(18)F]fluoro-2-deoxy-D-glucose ([(18)F]FDG) may help to establish the antitumor activity of enzastaurin, a novel protein kinase C-beta II (PKC-betaII) inhibitor, in mouse xenografts. Methods. The hematologic cell line RAJI and the solid tumor cell line U87MG were each implanted in NOD/SCID mice. Standard tumor growth measurements and [(18)F]FDG PET imaging were perform...
UNLABELLED The prognosis of patients with locally advanced breast cancer (LABC) remains poor. We prospectively investigated the impact of (18)F-FDG PET/CT at initial staging in this clinical setting and compared PET/CT performance with that of conventional distant work-up. METHODS During 60 mo, consecutive patients with LABC (clinical T4 or N2-N3 disease) underwent (18)F-FDG PET/CT. The yield...
UNLABELLED For (18)F-FDG PET to be widely used to monitor atherosclerosis progression and therapeutic response, it is crucial to better understand how macrophage glucose metabolism is influenced by the atherosclerotic microenvironment and to elucidate the molecular mechanisms of this response. Oxidized low-density lipoprotein (oxLDL) is a key player in atherosclerotic inflammation that promotes...
A new approach to the synthesis of 2-fluoro-2-deoxy-d-glucose (FDG, [(19/18)F]-) is described, which employs supported perfluoroalkylsulfonate precursors , where the support consists of insoluble polystyrene resin beads. Treatment of these resins with [(19)F]fluoride ion afforded protected FDG [(19)F]- as the major product, and the identities of the main byproducts were determined. Acidic remov...
The prognostic value of an interim fluorine-18-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) for diffuse large B-cell lymphoma (DLBCL) has been assessed by different groups. However, studies have suggested that the use of rituximab could limit the predictive value of interim (18)F-FDG PET for DLBCL. To clarify the prognostic value of interim (18)F-FDG PET in DLBCL patients tre...
UNLABELLED Cardiac PET using (18)F-FDG under fasting conditions (fasting (18)F-FDG PET) is a promising technique for identification of cardiac sarcoidosis and assessment of disease activity. The aim of this study was to investigate the usefulness of fasting (18)F-FDG PET in detecting inflammatory lesions of cardiac sarcoidosis from a pathophysiologic standpoint. METHODS Twenty-two patients wi...
BACKGROUND Hypoxia is associated with resistance to chemotherapy and radiotherapy and is randomly distributed within malignancies. Characterization of changes in intratumoral hypoxic regions is possible with specially developed PET tracers such as (18)F-fluoroazomycin arabinoside ((18)F-FAZA) while tumor metabolism can be measured with 2-deoxy-2-[(18)F]fluoro-D-glucose ((18)F-FDG). The purpose ...
This article aims to increase awareness about the utility of (18)F -FDG-PET/CT in the evaluation of cranial nerve (CN) pathology. We discuss the clinical implication of detecting perineural tumor spread, emphasize the primary and secondary (18)F -FDG-PET/CT findings of CN pathology, and illustrate the individual (18)F -FDG-PET/CT CN anatomy and pathology of 11 of the 12 CNs.
Nuclear medicine procedures are the methods of choice for the assessment of the tracer kinetics in a volume over time. Fluorine-18 fluoro-deoxyglucose ((18)F-FDG) is primarily a marker of tumor viability and the kinetics of (18)F-FDG reflects major biological factors like angiogenesis and proliferation. The correct interpretation of (18)F- FDG tracer kinetics demands the knowledge about the ass...
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