Novel uses of ultrasound include obtaining images of intra-oral structures to further research in speech production and feeding. In this technical note we describe a noninvasive, cost-effective, and reliable method for measuring infant tongue muscle thickness. The current pilot study demonstrates high reliability of a trained ultrasonographer to obtain adequate images of the infant tongue and the ability to measure reliably between two anatomic landmarks to determine tongue thickness and investigate a potential relationship between tongue size and tongue force.
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