نتایج جستجو برای: f 18 18f

تعداد نتایج: 643817  

2017
Madhurima R Chetan Tristan Barrett Ferdia A Gallagher

AIM To determine the significance and need for investigation of incidental prostatic uptake in men undergoing 18F-labelled fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) for other indications. METHODS Hospital databases were searched over a 5-year period for patients undergoing both PET/CT and prostate magnetic resonance imaging (MRI). For the initial a...

2017
Giancarlo Pascali Lidia Matesic Bo Zhang Andrew T King Andrea J Robinson Alison T Ung Benjamin H Fraser

The importance of the sulfur-fluorine bond is starting to increase in modern medicinal chemistry literature. This is due to a better understanding of the stability and reactivity of this moiety depending on the various oxidation states of sulfur. Furthermore, several commercial reagents used for mild and selective fluorination of organic molecules are based on the known reactivity of S-F groups...

2018
Javier Giglio Maia Zeni Eduardo Savio Henry Engler

Background Overexpression of prostatic membrane antigen (PSMA) is associated with the progression and prognosis of prostate cancer. There are numerous studies using this peptide with the 68Ga radionuclide. Previous methods to synthetize 18F-labeled PSMA ligands with complexes [18F]AlF2+ have been achieved. However, these reported syntheses were performed manually, using small volumes. Therefore...

2017
Kenji Ishibashi Airin Onishi Yoshinori Fujiwara Kiichi Ishiwata Kenji Ishii

BACKGROUND Increasing plasma glucose levels and insulin resistance can alter the distribution pattern of fluorine-18-labeled fluorodeoxyglucose (18F-FDG) in the brain and relatively reduce 18F-FDG uptake in Alzheimer's disease (AD)-related hypometabolic regions, leading to the appearance of an AD-like pattern. However, its relationship with plasma insulin levels is unclear. We aimed to compare ...

2016
Sang Don Kwon Kyung Ah Chun Eun Jung Kong Ihn Ho Cho

The authors report the case of a 34-year-old male, who underwent a fluorine-18 fluoro deoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) scan 7 years after trauma for the evaluation of multifocal masses in the right iliac and right inguinal areas. CT findings showed multifocal low density masses and 18F-FDG PET revealed slightly increased uptake (maximum standardiz...

2017
Thomas Lee Collier Steven H Liang J John Mann Neil Vasdev J S Dileep Kumar

Continuous-flow microfluidics has shown increased applications in radiochemistry over the last decade, particularly for both pre-clinical and clinical production of fluorine-18 labeled radiotracers. The main advantages of microfluidics are the reduction in reaction times and consumption of reagents that often result in increased radiochemical yields and rapid optimization of reaction parameters...

Journal: :Radiologic clinics of North America 2006
Einat Even-Sapir Genady Lievshitz Chava Perry Yair Herishanu Hedva Lerman Ur Metser

Lymphoma may originate in extranodal sites. Extranodal lymphoma may also be secondary to and accompany nodal disease. Fluorine-18 fluorodeoxyglucose (18F-FDG) imaging has an essential role in the staging of lymphoma, in monitoring the response to therapy, and in detection of recurrence. The introduction of 18F-FDG PET/CT hybrid imaging allows for accurate localization of disease and may be spec...

2015
Lin Zhang Lihua Chen Qiao Xie Yongke Zhang Lin Cheng Haitao Li Jian Wang

BACKGROUND The objective of this study was to evaluate the feasibility and diagnostic value of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) and (99m)Tc-methylenediphosphonate (MDP) whole-body bone scanning (BS) for the detection of osteolytic bone metastases. METHODS Thirty-four patients with pathologically confirmed malignancies and suspected osteo...

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