BACKGROUND The accuracy of multiple window spatial resolution characterises the performance of a gamma camera for dual isotope imaging. In the present study we investigate an alternative method to the standard NEMA procedure for measuring this performance parameter. METHODS A long-lived 133Ba point source with gamma energies close to 67Ga and a single bore lead collimator were used to measure...

The solution chemistry and structure of the complex of the triazamacrocyclic ligand NOTP (1,4,7-triazacyclononane-1,4,7-tris(methylenephosphonate)) with Ga3+ in D2O have been investigated by 1H, 71Ga and 31P NMR spectroscopy. These NMR results show the presence of a 1:1 Ga(NOTP)3- complex, with a highly symmetrical, pseudo-octahedral geometry, possibly with a C3 axis. The 1H spectrum shows that...

Although both Al and Fe are bound to transferrin in plasma, they are metabolized differently. Aluminum is less tightly bound to transferrin than is Fe, and might be released in circumstances in which Fe remains bound. The effect of pH ana citrate on the binding of 67Ga (a radiotracer used as an analog of Al) to transferrin in normal human serum was tested in the presence of physiological concen...

introduction: gallium-67 citrate has been known as a good infection agent in nuclear medicine for decades. in this work the value of 67ga-citrate has been investigated in infected animal models using spect imaging at optimized/standardized conditions. methods: the bacterial (staphylococcus aureus; s.a. and escherichia coli; e.c.) and fungal (candidae albicans; c.a.) species from standard sourc...

Mucosa-associated lymphoid tissue (MALT) lymphoma has been established as a distinct entity among non-Hodgkin's lymphomas, and the most common primary site is the stomach. We describe scintigraphic findings in a patient with MALT lymphoma of the thyroid. A 71-year-old woman with Hashimoto's thyroiditis suffered from rapid cervical swelling, and ultrasonography and CT revealed a thyroid nodule. ...

1Supported by USPHS Grants GM 01496 and GM 10548. Received February 20, 1974; accepted June 12,1974. lymphomas, the tumor type that accumulates 67Ga avidly; (ft) T-lymphocytes have been shown to be present in large numbers at the sites of abscesses, which also accumulate 67Ga well; and (c) T-lymphocytes are able to be transformed readily with mitogens, thereby converting a quiescent, nondividin...

Both 3H-labeled and unlabeled hematoporphyrin derivative (HPD) were analyzed by high-pressure liquid chromatography (HPLC) and gel permeation chromatography. Four main components were isolated by HPLC, and two were isolated by gel permeation chromatography. The tumor-localizing ability of each component was tested and compared to that of 67Ga and 3H2O by injection in mice bearing Lewis lung car...

The 63Cu(α,γ)67Ga reaction cross-section was measured in the energy range between 5 and 9 MeV, which is relevant to p-process nucleosynthesis. experiment conducted at Dynamitron Tandem Laboratory, of Ruhr-University Bochum Germany, by applying 4π γ-summing method, using a 12"×12" NaI(Tl) single crystal scintillator. preliminary results are compared with previous measurements theoretical TALYS c...