Now showing items 21-30 of 56
Potential tumor- or organ-imaging agents. 28. Radioiodinated esters of cholesterol and pregnenolone
(Elsevier, 1987-06)
Previous studies had shown radioiodinated esters of cholesterol and pregnenolone to accumulate in steroid-secreting tissues of the rat. This was particularly true for radioiodinated iopanoate esters. The present study was ...
Potential tumor or organ imaging agents--31. Radioiodinated sterol benzoates and carbamates
(Elsevier, 1989)
A series of radioiodinated benzoate and carbamate esters of cholesterol and pregnenolone wherein the acyl moiety served as the carrier for radioiodine was synthesized and evaluated as potential imaging agents for the adrenal ...
Determination of scan-plane motion using speckle decorrelation: Theoretical considerations and initial test
(John Wiley & Sons, Inc., 1997)
The correlation function of the echo signal intensities at a fixed region on a series of B-mode images is directly related to the change of speckle patterns between these images. An indication is given here of how the rate ...
Synthesis of fluorine-18 labeled GABA uptake inhibitors
(Elsevier, 1990)
The first syntheses of fluorine-18 labeled inhibitors of GABA reuptake [(R,S)-1-{2-{4-[18F]fluorophenyl}phenyl}methoxyethyl]piperidine-3-carboxylic acid, (R,S)-1-{2-(4-[18F]fluorophenyl)(4-fluorophenyl)methoxyethyl}piper ...
A constrained dual-energy reconstruction method for material-selective transmission tomography
(Elsevier, 1994-12-30)
A new reconstruction method has been developed for material-selective tomography that allows non-negativity and maximum density constraints to be enforced on each pixel. In addition, uncertainty in the projection data is ...
Application of coded apertures in tomographic head scanning
(Elsevier, 1984-03-15)
A circular ring tomograph, designated SPRINT, is under development for single photon emission tomography of the human head. Most data to date have been gathered using a single rotating slit inside the detector ring to ...
Exercise-induced hyperphagia in the hamster is associated with elevated plasma somatostatin-like immunoreactivity
(Elsevier, 1987-08-03)
Syrian golden hamsters when allowed free access to food and an exercise wheel will run long distances and develop hyperphagia and accelerated linear body growth with high circulating levels of growth hormone and insulin. ...
Proton and sodium MRI assessment of emerging tumor chemotherapeutic resistance
(John Wiley & Sons, Ltd., 2006-12)
The ultimate goal of any cancer therapy is to target the elimination of neoplastic cells. Although newer therapeutic strategies are in constant development, therapeutic assessment has been hampered by the inability to ...
[omega]-iodophenyl fatty acids: A convenient method of radioiodination
(Elsevier, 1986)
A solid-phase radioiodination technique for [omega]-iodophenyl fatty acids using ammonium sulfate is described. The radioiodinations are (1) regioselective, (2) high in yield (95%), (3) short in reaction time (1 h) and (4) ...