Now showing items 51-56 of 56
Improving emission-computed-tomography quantification by Compton-scatter rejection through offset windows
(Elsevier, 1986-01-15)
Historically in nuclear medicine the acceptance window for total-energy pulse-height has been set to maximize contrast and resolution in the image. Recently, there has been increased emphasis on quantification of digital ...
Effect of noise, order and range in fitting the photopeak region of local, Anger-camera energy spectra
(Elsevier, 1990-12-20)
In order to estimate and correct Compton scattering in nuclear-medicine Anger-camera imaging, we have previously required the least-mean-square error between the locally measured energy spectrum and one dependent on a ...
Transient decay of longitudinal magnetization in heterogeneous spin systems under selective saturation
(Elsevier, 1992-10-01)
The transient behavior of the longitudinal magnetization of the mobile protons in aqueous heterogeneous materials is investigated both theoretically and experimentally when selective saturation is applied by off resonance, ...
Synthesis of [11C]tetrabenazine, a vesicular monoamine uptake inhibitor, for PET imaging studies
(Elsevier, 1993-04)
Tetrabenazine (TBZ), a high affinity and specific inhibitor of the vesicular monoamine transporter, has been labeled with carbon-11 as a potential probe for in vivo positron emission tomographic imaging of monoaminergic ...
A captive solvent method for rapid N-[11C]methylation of secondary amides: Application to the benzodiazepine, 4'-chlorodiazepam (RO5-4864)
(Elsevier, 1988)
[11C]4'-Chlorodiazepam (RO5-4864), for PET studies of peripheral benzodiazepine receptors, was synthesized by alkylation of 1-desmethyl-4'-chlorodiazepam, in a small volume of acetone adsorbed on acrylic yarn, with [11C]methyl ...
Synthesis of a high specific activity 125I-labeled analog of PK 11195, potential agent for SPECT imaging of the peripheral benzodiazepine binding site
(Elsevier, 1989)
The peripheral benzodiazepine binding site ligand PK 11195 has been 125I-labeled by direct displacement of aromatic chlorine under solid-state conditions in 50-76% radiochemical yield and >94% radiochemical purity. ...