Design and calibration of a Tonpilz transducer for low frequency medical ultrasound tomography

The design and performance of a transducer for low frequency ultrasound tomography is presented, motivated by recent research demonstrating that acoustic waves transmitting at frequencies between 10 kHz and 750 kHz penetrate the lungs and may be useful for thoracic imaging. An adaptation of the trad...

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Bibliographic Details
Published in:	2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) pp. 4611 - 4617
Main Authors:	Pigatto, A. V., Giacobbo, L., Lisibach, A., Filho, E. M. Lopes, Lima, R. G., Mueller, J. L.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 2022
Subjects:	Lung Pistons Safety Sensitivity Transducers Ultrasonic imaging Vibration measurement
Online Access:	Get full text
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Summary:	The design and performance of a transducer for low frequency ultrasound tomography is presented, motivated by recent research demonstrating that acoustic waves transmitting at frequencies between 10 kHz and 750 kHz penetrate the lungs and may be useful for thoracic imaging. An adaptation of the traditional Tonpilz design was developed, vibrational amplitude and electrical impedance were measured, and an optimal frequency was determined. The design is found to meet the desired mechanical, electrical, and safety specifications. Thus, it was considered a promising option for the target application of pulmonary imaging with ultrasound computed tomography between 50 and 200 kHz; highest efficiency achieved around 125 kHz and 156 kHz, and beam divergence of 40°.
ISSN:	2694-0604
DOI:	10.1109/EMBC48229.2022.9872007