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2D airborne ultrasound piezotransducer arrays for corneal imaging

2D airborne ultrasound piezotransducer arrays for corneal imaging

Authors :
Remi Dufait
Christian Dorme
Antoine Aminot
Mathias Fink
Pavel Shirkovskiy
R.K. Ing
Mathieu Legros
Source :
2019 IEEE International Ultrasonics Symposium (IUS).
Publication Year :
2019
Publisher :
IEEE, 2019.

Abstract

Non-contact ultrasound applications are raising more and more interests. However, very few applications have been reported, for now in medical applications. In this work, compact airborne piezotransducers have been designed, built and characterized for a novel medical application: contactless corneal imaging. The emission transducer is cylindrical with a 5.5 mm diameter and the reception transducer is a 2D array of 4x16 elements. A specific emission-reception electronic is also designed for these transducers to drive their high electric impedances that are larger than kiloOhms. The measured parameters - directivity, sensitivity and frequency bandwidth – of both transducers respond well to the needs of corneal imaging application.

Details

Database :
OpenAIRE
Journal :
2019 IEEE International Ultrasonics Symposium (IUS)
Accession number :
edsair.doi...........c8e9e68966f12e7cb26b363c27908aaf
Full Text :
https://doi.org/10.1109/ultsym.2019.8926011