NDLI: A 3 MHz/18 MHz dual-layer co-linear array for transrectal acoustic angiography

Content Provider	IEEE Xplore Digital Library
Author	Sibo Li Jinwook Kim Zhuochen Wang Xiaoning Jiang Kasoji, S. Lindsey, B. Dayton, P.A.
Copyright Year	2015
Description	Author affiliation: Joint Dept. of Biomed. Eng., Univ. of North Carolina, Chapel Hill, NC, USA (Kasoji, S.; Lindsey, B.; Dayton, P.A.) \|\| Dept. of Mech. & Aerosp. Eng., North Carolina State Univ., Raleigh, NC, USA (Sibo Li; Jinwook Kim; Zhuochen Wang; Xiaoning Jiang)
Abstract	In this paper, a novel dual layer co-linear array ultrasound transducer was developed for transrectal dual-frequency superharmonic imaging. The KLM model and Field II were used for the acoustic stack design and simulation of the acoustic field of the array, respectively. The newly designed and fabricated probe consists of 50 transmit elements with a center frequency of 3 MHz and 100 receive elements with a center frequency of 18 MHz. The dimensions of the array are 15 mm in azimuth and 9 mm in elevation. The pitch is 270 μm for the transmitting elements and 135 μm for the receiving element. Pulse-echo testing of TX/RX elements corresponded with the simulation results. Real-time contrast imaging was tested using a multi-channel imaging system. The non-linear responses from microbubble contrast agents flowing through a 200 μm cellulose tube at a distance of 30 mm from the probe were clearly observed and displayed in the image. The axial beam width and CNR were calculated to be 200 μm and 18 dB, respectively. These results suggest that the prototyped co-linear array is capable of performing dual-frequency superharmonic imaging of microbubbles (“acoustic angiography”) for prostate cancer assessment.
Starting Page	1
Ending Page	4
File Size	539649
Page Count	4
File Format	PDF
e-ISBN	9781479981823
DOI	10.1109/ULTSYM.2015.0030
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-21
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Arrays Acoustics Transducers Ultrasonic imaging Sensitivity Angiography prostate cancer acoustic angiography dual frequency ultrasound contrast agent transrectal ultrasound
Content Type	Text
Resource Type	Article

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