Process for the generation of aerosols for the scintigraphic measurement of pulmonary ventilation, and a device relating to this

Abstract From the Canadian patent

The present process for the generation of aerosols for the scintigraphic measurement of regional pulmonary ventilation entails a radioactively labeled substance preferably a Tc-99m complex, being introduced into a nebulizing chamber (5) and nebilized with an ultrasonic vibrator (3). The carrier substance used in the radioactively labeled substance is a colloid from human serum albumin which has an irregular surface structure but also an approximately uniform particle size. The aerosol generated in this way is breathed through an inhalation tube (9). The wall of the nebulizing chamber (5) is at least partly designed as a vibrating diaphragm and has a wall thickness between 0.02 mm and 0.03 …