AJR AJR Integrative Imaging Dec 2008 articles
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American Journal of Roentgenology, Vol 129, Issue 2, 327-328
Copyright © 1977 by American Roentgen Ray Society

Articles

Clearance of radioactive tantalum from the human lung after accidental inhalation

D Newton

Techniques of body radioactivity measurement were used to study the clearance of activated tantalum oxide accidentally inhaled by three reactor workers. The whole-body retention after 7 days was about 1% of the initial deposit. In one subject studied for a further 424 days the residual activity in the thorax was cleared with a biological half-life of about 1,400 days. The results support indications from other studies that tantalum powder administered in aerosol bronchography may be subject to prolonged alveolar retention.
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Copyright © 1977 by the American Roentgen Ray Society.