Results 191 to 200 of about 419,360 (243)

Vascular complications of thorium dioxide

The American Journal of Medicine, 1978
Vascular complications occurring late after exposure to thorium dioxide (thorotrast) are described in two patients. One patient had both cerebral andmyocardial infarcts and died at age 25 years. Necropsy disclosed both adventitial and intimal fibrosis of the left carotid artery and greater than 75 per cent cross-sectional area luminal narrowing of both
J M, Isner, K J, Sazama, W C, Roberts
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Modeling of Thorium (IV) Ions Adsorption Onto a Novel Adsorbent Material Silicon Dioxide Nano-Balls Using Response Surface Methodology

Applied Radiation and Isotopes, 2016
The silicon dioxide nano-balls (nano-SiO2) were prepared for the adsorption of thorium (IV) ions from aqueous solution. The synthesized silicon dioxide nano-balls were characterized by Scanning Electron Microscopy/Energy Dispersive X-ray, X-ray ...
İsrafil Sabikoglu, Sermin Çam Kaynar, Ümit H Kaynar   +2 more
exaly   +3 more sources

Thorium Dioxide: Still Around

Southern Medical Journal, 1985
Patients who have received thorium dioxide (Thorotrast) are at risk for hepatic and other malignancies. Because of the need to identify and carefully follow up these patients, we have presented three cases with the characteristic radiologic findings on plain films so that physicians unfamiliar with this appearance will now be aware of it.
G, Velasquez, C F, Ward, S P, Bohrer
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Hepatoma Induced by Thorium Dioxide

Southern Medical Journal, 1976
A 74-year-old man complained of anorexia and weight loss. Twenty-six years earlier he had received an injection of Thorotrast. A needle biopsy of the liver showed thorium dioxide granules and periportal fibrosis. On laparotomy, a hepatoma of the left lobe of the liver was discovered.
N S, Mann, A, Chaudhry, S, Thaler, A, Sachdev   +3 more
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The cohesion of thorium dioxide

Journal of Physics: Condensed Matter, 1994
The cohesion of solid thorium dioxide is calculated within the fully ionic description, calculating exactly, after generating the electronic wavefunctions of the ions, those parts of each inter-ionic potential that do not arise from electron correlation.
J H Harding, P J D Lindan, N C Pyper
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Thorium Dioxide and Liver Cancer

JAMA: The Journal of the American Medical Association, 1982
To the Editor.— In light of recent data presented at the International Conference on the Radiobiology of Radium and the Actinides in Man held in Lake Geneva, Wis, Oct 11-16, 1981 (co-sponsored by the US Department of Energy, the US Nuclear Regulatory Commission, and the Commission of European Communities), the following additional comments are offered
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LATE EFFECTS OF THORIUM DIOXIDE IN MAN

Archives of Internal Medicine, 1951
THE USE of thorium dioxide in man has been controversial since its introduction in 1930. 1 In the form of a colloidal suspension, thorium dioxide is a radiopaque diagnostic agent of greatest usefulness in visualizing the liver and spleen. Numerous observers have shown that this particulate material is taken up by the reticuloendothelial system after ...
C, CASSEL, J M, RUFFIN, R J, REEVES, L D, STODDARD   +3 more
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Thorium-thorium dioxide phase equilibria

Journal of Nuclear Materials, 1969
Various Th-ThO2 mixtures were investigated with thermal analysis, X-ray, and microscopic techniques. The following information on phase boundaries is deduced. The oxygen solubility in solid Th is less than the OTh ratio of 0.003. The solid-solid transition of Th saturated with ThO2 occurs at 1370 ± 30 °C.
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Management of Cervical Thorium Dioxide Granulomas

Archives of Otolaryngology - Head and Neck Surgery, 1981
Thorium dioxide (Thorotrast) was used extensively in the United States from the 1930s through the 1950s for contrast radiography, including cerebral angiography. Its use was discontinued after the pathologic consequences of tumor formation and local fibrotic reaction (thorium dioxide granuloma) were recognized. The latency period for the development of
R B, Stanley, T C, Calcaterra
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Progressive Thorium Dioxide Myelopathy

New England Journal of Medicine, 1964
THIS seems to be an era of steadily increasing use of many contrast mediums in an effort to study and diagnose various problems. This practice is increasing in all branches of medicine but especially in delineating the nervous system and its vascular supply. This is good, and certainly none can detract from the great advances in neurologic surgery that
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