Powdered tantalum was used as a contrast agent for laryngography 7 times in 5 subjects: 3 healthy and 2 with laryngeal carcinoma. It was inhaled by the mouth in 3 cases without topical anesthesia and insufflated selectively into the upper airways by cathether in the others. The laryngeal structures were outlined with sharp contrast and fine mucosal detail in all cases. Coughing, swallowing, or phonation did not significantly affect the roentgen appearance. No adverse effects were observed.
No takes yet. Share an insight, caveat, or question.
Zamel et al. (1970) studied this question.