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The overall objective of this pilot study was to determine blue dye test reliability and validity for the identification of aspiration of secretions, food, and/or drink in 50 simultaneously administered blue dye (BDT) and modified barium swallow (MBS) tests of tracheostomized individuals. With the MBS as an objective test of aspiration, BDT sensitivity and… (More)
We report the development of a new method of instantaneously measuring three-dimensional velocity profiles and structure in air and oxygen. No seeding of particles, molecules, or atomic species is required. The method combines Raman excitation and laser-induced electronic fluorescence to generate a time-gated image of the moving oxygen molecules.
PRIMARY OBJECTIVE To report the ability of 12 tracheostomized acute rehabilitation hospital inpatients with severely disordered consciousness post-traumatic brain injury (TBI) to participate in an objective swallowing assessment. RESEARCH DESIGN Post hoc analysis of data from a larger, prospective blinded comparison study. METHODS AND PROCEDURES… (More)
A combination of laser-induced fluorescence and Rayleigh scattering from an ArF laser tuned onto an oxygen transition is proposed for instantaneous two-dimensional measurements of temperature and density. A model giving the temperature and frequency dependence of these mechanisms is developed, and supporting experimental results are presented.