NDLI: Investigation of kerfless ultrasound arrays using inverse systems

Content Provider	IEEE Xplore Digital Library
Author	Ackermann, D. Schmitz, G.
Copyright Year	2012
Description	Author affiliation: Dept. of Med. Eng., Ruhr-Univ. Bochum, Bochum, Germany (Ackermann, D.; Schmitz, G.)
Abstract	The manufacturing of high frequency (>20 MHz) ultrasound transducer arrays is challenging because single elements have to be very small. In this contribution, we investigate kerfless transducer arrays, which are easier to fabricate than conventional arrays. Omitting of kerfs causes high mechanical coupling of adjacent elements and results in degraded imaging resolution. For compensation of this coupling we first obtain a multiple input multiple output transfer function of the array by identification in simulations. From this transfer function we calculate an inverse system. We show that omitting the kerfs will degrade the lateral resolution (-6 dB width) from 173 to 253 μm and the axial resolution from 66 to 84 μm. By applying the proposed inverse system the lateral resolution will be improved to 181 μm while axial resolution stays unchanged.
Starting Page	1
Ending Page	4
File Size	158453
Page Count	4
File Format	PDF
ISBN	9781467345613
ISSN	19485719
e-ISBN	9781467345620
DOI	10.1109/ULTSYM.2012.0176
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-07
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transducers Image resolution Ultrasonic imaging Finite element analysis Transfer functions Image reconstruction Ports (Computers)
Content Type	Text
Resource Type	Article

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