A128 X128 (16K) Ultrasonic Transducer Hybrid Array

Erikson, Ken; Hairston, A.; Nicoli, A.; Stockwell, Jason D.; White, T.

doi:10.1007/978-1-4419-8588-0_77

Cited by 14 publications

(3 citation statements)

References 3 publications

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“…So we can change the shape of the beam. Each element of the Array transducers is able to vary the release time of the ultrasound wave [4]. Thus, the change the shape of the ultrasound beam means the beam-forming.…”

Section: Proposed Switching Mux 21 Array Transducermentioning

confidence: 99%

Development of multi-purpose Switching MUX for the ultrasound measurement

Lee¹,

Kim²,

Kim³

2014

Advanced Science and Technology Letters

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In this thesis, it is presented the proposed development of the Switching MUX with the array transducer by use of Delay-And-Sum Beamforming technology for a more accurate measurement. Among the several measurement methods, it is studied two ways, i.e. Pulse-Echo method and the radiation conductance measurement. In this paper, we propose to the multipurpose Switching MUX all interfacing the two methods mentioned earlier. And it is verified that beam-forming control of the proposed equipment is smoothly implemented through simulation. And multipurpose Switching MUX proposed in this thesis is modularized by 64ports in order to reduce the hardware size.

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Section: Proposed Switching Mux 21 Array Transducermentioning

confidence: 99%

Development of multi-purpose Switching MUX for the ultrasound measurement

Lee¹,

Kim²,

Kim³

2014

Advanced Science and Technology Letters

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“…The combination of small elements and a large aperture results in a very large number of transducer elements. It is fairly possible to make a matrix array with >1000 elements, but making electrical connections to all the elements is challenging [25].…”

Section: Introductionmentioning

confidence: 99%

Receive/Transmit Aperture Selection for 3D Ultrasound Imaging with a 2D Matrix Transducer

et al. 2020

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Recently, we realized a prototype matrix transducer consisting of 48 rows of 80 elements on top of a tiled set of Application Specific Integrated Circuits (ASICs) implementing a row-level control connecting one transmit/receive channel to an arbitrary subset of elements per row. A fully sampled array data acquisition is implemented by a column-by-column (CBC) imaging scheme (80 transmit-receive shots) which achieves 250 volumes/second (V/s) at a pulse repetition frequency of 20 kHz. However, for several clinical applications such as carotid pulse wave imaging (CPWI), a volume rate of 1000 per second is needed. This allows only 20 transmit-receive shots per 3D image. In this study, we propose a shifting aperture scheme and investigate the effects of receive/transmit aperture size and aperture shifting step in the elevation direction. The row-level circuit is used to interconnect elements of a receive aperture in the elevation (row) direction. An angular weighting method is used to suppress the grating lobes caused by the enlargement of the effective elevation pitch of the array, as a result of element interconnection in the elevation direction. The effective aperture size, level of grating lobes, and resolution/sidelobes are used to select suitable reception/transmission parameters. Based on our assessment, the proposed imaging sequence is a full transmission (all 80 elements excited at the same time), a receive aperture size of 5 and an aperture shifting step of 3. Numerical results obtained at depths of 10, 15, and 20 mm show that, compared to the fully sampled array, the 1000 V/s is achieved at the expense of, on average, about two times wider point spread function and 4 dB higher clutter level. The resulting grating lobes were at −27 dB. The proposed imaging sequence can be used for carotid pulse wave imaging to generate an informative 3D arterial stiffness map, for cardiovascular disease assessment.

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“…Ultrasound measuring device generates ultrasound wave by adding electrical signal to the transducer. And detects the electrical signals generated by the reflected wave coming back [4]. This thesis proposes a Switching MUX which is capable of interfacing with various measurement methods using ultrasound.…”

confidence: 99%