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Extrathoracic deposition was studied using an idealized average human mouth and throat replica. Effects of particle size, flow rate and flow Reynolds number were examined using gamma scintigraphy and gravimetry. Radiolabeled monodisperse sebacate (DEHS) oil particles of mass median diameter d p =3, 5 and 6.5μm and two constant flow rates Q=30 and 90l/min were used. Total and regional depositions...
This paper presents regional and total deposition measurements in several realistic mouth and throat geometries and demonstrates the effects of intrasubject and intersubject variations in geometry on deposition efficiency. A set of seven geometries that span the range of key dimensions of a larger set of 80 geometries were studied at flow rates of 30 and 90l/min and particle diameters of 3-6.5μm....
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