[Niobium powder--a new x-ray contrast medium for tracheobronchography]

A A Kristafovic¹, L E Kolesko, A E Alexandrova

¹Röntgenoradiologische Abteilung, Leningrad Forschungsinstitut für Phtisiopulmonologie.

Radiologia Diagnostica

|January 1, 1990

Abstract:

In inhalation tracheobronchography with niobium powder in rabbits and a volunteer (physician), excellent contour bronchograms with detailed imaging of the structure of the mucosa were obtained. With methodically proper application the niobium particles of 20-40 microns do not penetrate into the alveoli and are quickly (within 1-5 days) eliminated from the bronchi. Investigations with mice have shown, that niobium powder is insoluble, does not irritate tissues and is not resorbed. It is also nontoxic.

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