Challenges in Preparing Contrast Media for Videofluoroscopy
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To the Editor,
The rheological characteristics of barium preparations need to be understood with respect to how they map to clinical categories of liquid consistency.
The concentration of barium in commercially available suspensions affects both its visibility on the radiographic image and the degree to which the suspension leaves a coating on the pharyngeal mucosa.
Mixing barium powder into already thickened liquids may result in further thickening of the liquid.
We provide a brief elaboration on each of these points below.
KeywordsBarium Apple Juice Thickened Liquid Barium Concentration Bracco Diagnostics
Funding support for the work described in this Letter to the Editor was provided through an NSERC Create Care Award to SM. Additional funding support was received through a Canadian Institutes of Health Research New Investigator award and an NIDCD RO1 Grant to CMS and from the Toronto Rehabilitation Institute—University Health Network, which receives funding under the Provincial Rehabilitation Research Program from the Ministry of Health and Long-Term Care in Ontario. The views expressed do not necessarily reflect those of the Ministry. The authors gratefully acknowledge the assistance of Sarah Hori, Clemence Tsang, Rossini Yue, and Tasnim Shariff with data collection, and Dr. David James for use of rheological testing equipment.
Conflict of interest
The authors have no conflicts of interest to disclose.
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