This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.Chronic rhinosinusitis affects over 33 million Americans. The goal of this subproject is to develop a technique for assessing sinus aeration. This may lead to one of the first clinically measures of sinus function which may be used to guide sinus management. To this end we are now in the process of developing a hyperpolarized MRI method for measuring the velocity field of inhaled gases within the nasal cavity and paranasal sinuses. This allows us to directly compare experimentally measured data with those predicted by computation fluid dynamic methods. We have recently implemented this technique on a clinical MRI system at the University of Pennsylvania and are in the process of testing this on suitable nasal and sinus phantoms.
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