نتایج جستجو برای: 18f

تعداد نتایج: 13060  

2016
Fu-Li Wang Ye-Ying Tan Xiang-Min Gu Tian-Ran Li Guang-Ming Lu Gang Liu Tian-Long Huo

BACKGROUND The detection of solitary pulmonary nodules (SPNs) that may potentially develop into a malignant lesion is essential for early clinical interventions. However, grading classification based on computed tomography (CT) imaging results remains a significant challenge. The 2-[18F]-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography (PET)/CT imaging produces both false-positiv...

2015
Jae Yong Choi Chul Hyoung Lyoo Jin Su Kim Kyeong Min Kim Jee Hae Kang Soo-Hee Choi Jae-Jin Kim Young Hoon Ryu

INTRODUCTION The purpose of this research is to evaluate the prospects for the use of 4-(trans-18F-fluoranylmethyl)-N-[2-[4-(2-methoxyphenyl)piperazin-1-yl]ethyl]-N-pyridin-2-ylcyclohexane-1-carboxamide (18F-Mefway) in comparison to 18F-trans-4-fluoro-N-2-[4-(2-methoxyphenyl)piperazin-1-yl]ethyl]-N-(2-pyridyl)cyclohexanecarboxamide (18F-FCWAY) for the quantification of 5-HT1A receptors in human...

Journal: :International journal of biology and chemistry 2022

This article provides a brief overview of the 18F isotope production using Cyclone-30 cyclotron and two liquid targets with volume 0.5 2.0 ml, water enriched 18O was used as target material. The obtained for serial [18F]FDG radiopharmaceutical supply this medicine to operating PET centers in Almaty. also experimental syntheses [18F]PSMA-1007 Na[18F]F assess possibility implementation these medi...

Journal: :asia oceania journal of nuclear medicine and biology 0
yasuyuki takahashi department of radiology, gunma prefectural college of health sciences, maebashi, japan mizuki mochiki department of ragiological technology, gunma cardiovascular center, maebashi, japan keiko koyama department of diagnostic radiology and nuclear medicine, gunma cardiovascular center, maebashi, japan toshihiko ino department of ragiological technology, gunma cardiovascular center, maebashi, japan hiroyuki yamaji department of ragiological technology, national kyusyu medical center, fukuoka, japan atsuko kawakami department of ragiological technology, red cross maebashi hospital, maebashi, japan

objective(s): use of a positron emission tomography (pet)/single-photonemission computed tomography (spect) system facilitates the simultaneousacquisition of images with fluorine-18 fluorodeoxyglucose (18f-fdg) andtechnetium (99mtc)-tetrofosmin. however, 18f has a short half-life, and 511kev compton-scattered photons are detected in the 99mtc energy window.therefore, in this study, we aimed to ...

2016
Yilong Fu Lai-Chun Ong Sudhir H. Ranganath Lin Zheng Irene Kee Wenbo Zhan Sidney Yu Pierce K. H. Chow Chi-Hwa Wang Russell R. Lonser

Early diagnosis of low grade glioma has been a challenge to clinicians. Positron Emission Tomography (PET) using 18F-FDG as a radio-tracer has limited utility in this area because of the high background in normal brain tissue. Other radiotracers such as 18F-Fluorocholine (18F-FCH) could provide better contrast between tumor and normal brain tissue but with high incidence of false positives. In ...

Journal: :Molecules 2015
Chunxiong Lu Quanfu Jiang Minjin Hu Cheng Tan Huixin Yu Zichun Hua

A novel annexin V derivative (Cys-Annexin V) with a single cysteine residue at its C-terminal has been developed and successfully labeled site-specifically with 18F-FBEM. 18F-FBEM was synthesized by coupling 18F-fluorobenzoic acid (18F-FBA) with N-(2-aminoethyl)maleimide using optimized reaction conditions. The yield of 18F-FBEM-Cys-Annexin V was 71.5% ± 2.0% (n = 4, based on the starting 18F-F...

Journal: :iranian journal of nuclear medicine 2016
antonios dimosthenis kalkinis thomas wagner

introduction: 18f-choline pet-ct is an increasingly used technique in patients with prostate cancer. the main indication is to localise the disease in patients with biochemical recurrence. to accurately interpret 18f-choline pet, knowledge of normal tracer distribution is paramount. the aim of this study was to describe the normal distribution pattern of 18f-choline by measuring the maximum sta...

2013
Johanna Tuomela Sarita Forsback Laura Haavisto Tero Vahlberg Tove J Grönroos Olof Solin Merja Haaparanta-Solin

BACKGROUND An unknown location hampers removal of pancreatic tumours. We studied the effects of enzyme inhibitors on the uptake of 6-[18F]fluoro-l-3,4-dihydroxyphenylalanine ([18F]FDOPA) in the pancreas, aiming at improved imaging of pancreatic adenocarcinoma. METHODS Mice bearing orthotopic BxPC3 pancreatic adenocarcinoma were injected with 2-deoxy-2-[18F]fluoro-d-glucose ([18F]FDG) and scan...

Journal: :Clinical nuclear medicine 2015
Srinath C Sampath Srihari C Sampath Camila Mosci Amelie M Lutz Juergen K Willmann Erik S Mittra Sanjiv S Gambhir Andrei Iagaru

PURPOSE Sodium fluoride PET (18F-NaF) has recently reemerged as a valuable method for detection of osseous metastasis, with recent work highlighting the potential of coadministered 18F-NaF and 18F-FDG PET/CT in a single combined imaging examination. We further examined the potential of such combined examinations by comparing dual tracer 18F-NaF18/F-FDG PET/CT with CT alone for detection of osse...

Objective(s): This study aimed to compare the diagnostic values of 11C-choline and 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) in patients with cholangiocarcinoma (CCA). Methods: This prospective study was conducted on 10 patients (6 males and 4 females), aged 42-69 years, suspected of having CCA based on CT or magnetic resonance imaging (MRI) resu...

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