Title :
Measurement of airflow through a metered dose inhaler during MRI
Author :
Delanvar, Soheil ; Schmalfuss, Ilona ; Melker, Richard J. ; Van Oostrom, Johannes H.
Author_Institution :
Dept. of Anesthesiology, Florida Univ., Gainesville, FL, USA
Abstract :
We designed, calibrated and tested a flow meter for use inside an MRI scanner for measuring airflow through a metered dose inhaler (MDI). Several flow measurement methods were analyzed and the differential pressure method was selected utilizing the inhaler as part of the sensor. Our system can measure respiratory flows during use enabling the relationships between flow rate, air flow resistance, inhaler design, and drug deposition to be measured.
Keywords :
biomedical MRI; flowmeters; pneumodynamics; air flow resistance; airflow; flow meter; flow rate; inhaler design; metered dose inhaler; respiratory flows; Drugs; Electric variables measurement; Electrical resistance measurement; Energy measurement; Fluid flow measurement; Lungs; Magnetic resonance imaging; Temperature measurement; Time measurement; Turbines;
Conference_Titel :
Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8439-3
DOI :
10.1109/IEMBS.2004.1403677
