Now showing items 81-88 of 88
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 ...
Design of a very high-resolution small animal PET scanner using a silicon scatter detector insert
(IOP Publishing Ltd, 2007-08-07)
A small animal positron emission tomography (PET) instrument using a high-resolution solid-state detector insert in a conventional PET system was investigated for its potential to achieve sub-millimeter spatial resolution ...
Magnetic field perturbation of neural recording and stimulating microelectrodes
(IOP Publishing Ltd, 2007-04-21)
To improve the overall temporal and spatial resolution of brain mapping techniques, in animal models, some attempts have been reported to join electrophysiological methods with functional magnetic resonance imaging (fMRI). ...
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 ...
CT findings of hypervascular malignant peritoneal mesothelioma
(Elsevier, 1987)
A case of peritoneal mesothelioma is presented in which CT demonstrated abnormal regions of increased vascularity in the omentum corresponding to hypervascular omental lesions shown by angiography. This CT appearance has ...
Three-dimensional static displacement, stimulated echo NMR elasticity imaging
(IOP Publishing Ltd, 2000-06-01)
This article presents a method for measuring three-dimensional mechanical displacement and strain fields using stimulated echo MRI. Additional gradient pulses encode internal displacements in response to an externally ...
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. ...