Abstract
The deposition rate in the air way and the systemic distribution of nebulized drugs were investigated. In this study we used a radioactive isotope (99 mTc).
We gave aerosol to some volunteers through mouth using a jet nebulizer. The particle was found to be distributed as follows: 5% in the nasal cavity, 10% in the oral cavity. 20% in the pharyngo-larynx, 30% in the thorax, 15% in the abdomen and 20% was exhaled.
