نتایج جستجو برای: 18ffdg
تعداد نتایج: 35 فیلتر نتایج به سال:
Merkel cell carcinoma (MCC) is a rare, aggressive, cutaneous neuroendocrine neoplasm, the presentation of which varies. Histologically it is a dermic lesion. Differentiation of the cells is difficult to distinguish from cutaneous metastases of neuroendocrine carcinomas, melanoma and angiosarcoma. The immunohistochemical profile of MCC and its ultrastructural characteristics help to differentiat...
The contribution of 18F-FDG uptake by endothelial cells to uptake values measured by PET in various tissues is as yet unclear. We therefore sought to characterize 18F-FDG uptake in an in vitro model of human endothelial cells. Methods: Commercially obtained human umbilical vein endothelial cells (HUVECs) were seeded in 6-multiwell plates 48–96 h before incubation with 1–2 MBq 18F-FDG per well. ...
A 44-year-old female patient presented symptoms and laboratory data consistent with a Cushing’s syndrome. Endocrine investigations and negative pituitary imaging were suggestive of ectopic ACTH secretion. Therefore, the patient underwent fluorine18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) and somatostatin receptor scintigraphy (SRS) searching for the ...
Purpose: To determine the value of diffusion-weighted MRI (DWI-MRI) for pretherapeutic imaging of fluorodeoxyglucose (FDG)-avid lymphoma and lymphoma with variable FDG avidity. Experimental Design: Treatment-na€ ve patients with lymphoma who were referred for whole-body staging were included in this prospective study. Group A included patients with FDG-avid lymphoma (e.g., Hodgkin, diffuse larg...
Background: 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/ CT) has become an established method for detecting hypermetabolic sites of known and occult disease and is widely used in oncology surgical planning. Intraoperatively, it is often difficult to localize tumors and verify complete resection of tumors that have been previously detected on diagnostic...
BACKGROUND Fluorodeoxyglucose (18FDG) PET/CT imaging has become an important component of the management paradigm in oncology. However, the significant imparted radiation exposure is a matter of growing concern especially in younger populations who have better odds of survival. The aim of this study was to estimate the effective dose received by patients having whole body 18FFDG PET/CT scanning...
Hellenic Journal of Nuclear Medicine • September December 2009 291 To the Editor: The Hell J Nucl Med has printed an article comparing technetium-99m pentavalentdimercapto succinic acid (99mTc(V)-DMSA) as an effective agent diagnosing acute bone and joint infection [1]. We now report that 99mTc(V)-DMSA can identify foci of infection in a case of fever of unknown origin. 99mTc(V)-DMSA, as a tumo...
Background: Multiple Myeloma (MM) is a B cell neoplasm causing lytic or osteopenic bone abnormalities. Whole body skeletal survey (WBSS), Magnetic resonance (MR) and 18F-FDG PET/CT are imaging techniques routinely used for the evaluation of bone involvement in MM patients. Aim: As MM bone lesions may present low 18F-FDG uptake; the aim of this study was to assess the possible added value and li...
Malignant pleural mesothelioma (MPM) is an uncommon neoplasm arising from mesothelial cells of the pleura and less commonly of the pericardium or peritoneum. The annual incidence of 3000 cases is expected to increase by more than 50% in the coming decade due to the patterns of occupational exposure to asbestos and latency period of 30–40 years [1,2]. Treatment options depend on stage at present...
Treglia et al. [1] have recently proposed a meta-analysis evaluating the diagnostic performance of 99mTc-MIBI scan in predicting the malignancy of thyroid nodules. 99m-Tc is registered and adopted worldwide for myocardial perfusion imaging and for the diagnostic work-up of hyperparathyroidism. Furthermore there are reports on the use of 99mTc-MIBI imaging in post-surgical evaluation of thyroid ...
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