Clinical nuclear medicine
-
Clinical nuclear medicine · Nov 2011
Comparative Study Clinical Trial13N-NH3 versus F-18 FDG in detection of intracranial meningioma: initial report.
Relatively high Tl-201 uptakes have been reported in all types of meningiomas, and it have been proposed that (201)TlCl SPECT could predict histologic types of meningiomas and differentiate the benign and aggressive meningiomas. Similar to Tl-201, (13)N-(13)NH(4)(+) is an analog of K(+) and could substitute K(+) in some cases. The aim of this study was to evaluate the capacity of PET with (13)N-NH(3) to discriminate meningioma from healthy tissue, and compare with F-18 FDG. ⋯ These preliminary results suggest that (13)N-NH(3) has relatively greater uptake in meningiomas in comparison with F-18 FDG. Clinical applications of (13)N-NH(3) PET for grading and follow-up of meningiomas need to be assessed in further studies.
-
Clinical nuclear medicine · Nov 2011
Estimation of Tc-99m MAG3 clearance using camera-based methods without blood sampling.
To establish camera-based methods for estimating Tc-99m mercaptoacetyltriglycine (MAG3) clearance without blood sampling. ⋯ The camera-based methods determined in the present study allow the estimation of MAG3 clearance with acceptable accuracy.
-
Clinical nuclear medicine · Aug 2011
Additional Benefit of F-18 FDG PET/CT in the staging and follow-up of pediatric rhabdomyosarcoma.
The therapeutic management of rhabdomyosarcoma (RMS) is strongly dependent on initial staging. This study aimed to evaluate F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) as an adjunct to conventional imaging (CI) in the staging and follow-up of pediatric RMS. ⋯ FDG PET/CT can be useful in staging and restaging pediatric RMS, especially for assessing lymph nodes and bone involvement, and for detecting unknown primary sites of RMS, with potential therapeutic strategy alteration.
-
We report a case of a primary collision lung cancer consisting of squamous cell carcinoma and adenocarcinoma. A 73-year-old man with an abnormality found on chest radiograph in the right lower lobe was examined by FDG PET/CT (F-18 fluorodeoxyglucose positron emission tomography/computed tomography). ⋯ Each element was clearly distinguished but touched. FDG PET/CT is a useful tool to diagnose collision tumor as it shows morphologic and metabolic differences between 2 distinct tumor components.