Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/170631
 Title: Fabrication and Characterization of a 20-MHz Microlinear Phased-Array Transducer for Intervention Guidance Authors: Chi Tat Chiu;Bong Jin Kang;Payam Eliahoo;Theodore Abraham;K. Kirk Shung Year: 2017 Publisher: IEEE Abstract: This paper describes the design and fabrication of a miniature ultrasonic phased-array transducer used for intervention guidance. Currently, ultrasound probes are often placed at the body surface of the patients, leading to several drawbacks including the limitation of penetration and image quality. In order to improve the reliability of the guiding process, we propose a miniature phased-array transducer that can be placed adjacent to the intervention device during the interventional procedure. In this paper, we report the work that has been carried out on the development of this miniature phased-array transducer. It comprised 48 elements housed in a 3-mm-diameter needle. A specially designed flexible circuit was used for accommodating the transducer array in the long, thin needle housing. The center frequency and the fractional bandwidth were approximately 20 MHz and 42&x0025;, respectively, with an average crosstalk lower than &x2212;30 dB. The axial and azimuth resolutions were approximately 80 and 210~\mu \text{m} , respectively. The imaging capability of the transducer was further evaluated by acquiring the B-mode images of a needle in a cow liver. The performance of the proposed phased-array transducer demonstrates the feasibility of such an approach for interventional guidance. URI: http://localhost/handle/Hannan/170631 volume: 64 issue: 8 More Information: 1261,1268 Appears in Collections: 2017

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