3-D Imaging using Row–Column-Addressed 2-D Arrays with a Diverging Lens: Phantom Study

Hamed Bouzari, Mathias Engholm, Christopher Beers, Matthias Bo Stuart, Svetoslav Ivanov Nikolov, Erik Vilain Thomsen, Jørgen Arendt Jensen

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Abstract

A double-curved diverging lens over a flat row– column-addressed (RCA) 2-D array can extend its inherent rectilinear 3-D imaging field-of-view (FOV) to a curvilinear volume region, which is necessary for applications such as abdominal and cardiac imaging. A concave lens with radius of 12.7 mm was manufactured using RTV664 silicone. The diverging properties of the lens were evaluated based on measurements on several phantoms. The measured 6 dB FOV in contact with a material similar to human soft tissue was less than 15% different from the theoretical predictions, i.e., a curvilinear FOV of 32°×32°. A synthetic aperture imaging sequence with single element transmissions was designed for imaging down to 14 cm at a volume rate of 88 Hz. The performance was evaluated in terms of signal-to-noise ratio (SNR), FOV, and full-widthat-half-maximum (FWHM). The penetration depth in a tissue mimicking phantom with 0.5 dB/(cm MHz) attenuation was 13 cm. The results of this study confirm that the proposed lens approach is an effective method for increasing the FOV, when imaging with RCA 2-D arrays.
Original languageEnglish
Title of host publication2017 IEEE International Ultrasonics Symposium (IUS)
Number of pages4
PublisherIEEE
Publication date2017
ISBN (Electronic)978-1-5386-3383-0
DOIs
Publication statusPublished - 2017
Event2017 IEEE International Ultrasonics Symposium (IUS) - Omni Shoreham Hotel, Washington, United States
Duration: 6 Sep 20179 Sep 2017
http://ewh.ieee.org/conf/ius/2017/

Conference

Conference2017 IEEE International Ultrasonics Symposium (IUS)
LocationOmni Shoreham Hotel
Country/TerritoryUnited States
CityWashington
Period06/09/201709/09/2017
Internet address

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