DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoon, C. | - |
dc.contributor.author | Kim, H.H. | - |
dc.contributor.author | Shung, K.K. | - |
dc.date.accessioned | 2018-06-15T05:38:24Z | - |
dc.date.available | 2018-06-15T05:38:24Z | - |
dc.date.created | 2017-12-21 | - |
dc.date.issued | 2017-06 | - |
dc.identifier.issn | 0885-3010 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/50685 | - |
dc.description.abstract | This paper presents a low-complexity, cost-effective digital beamformer architecture for a high-frequency ultrasound imaging system. The proposed beamformer uses a lookup table and linear interpolation methods for computing the dynamic receive focusing delays and a postfiltering technique to minimize hardware complexity. In the postfiltering technique, channel radio-frequency data having the same fractional delay (i.e., 16f0 resolution) are aggregated prior to interpolation. Thus, only four polyphase structure filters are required in the developed beamformer. In addition, a quadrature bandpass filter that generates an analytic signal is utilized as an interpolation filter; this allows decimation during beam formation and a reduction in computational complexity. The proposed method was evaluated through a 20-��m wire phantom experiment, and the -6-dB lateral and axial resolutions obtained therein were measured and compared with those obtained using a conventional method. The same lateral (165��m) and axial (80��m) resolutions at a depth of 5.6 mm were obtained using both the methods, and the proposed method could reduce the beamforming points (i.e., computational complexity) by a factor of the decimation factor (��4). Images from an excised bovine eye were captured; they showed that the proposed beamformer identified fine anatomical structures such as cornea or iris without compromising the spatial resolution and reduced the computational complexity. ? 2017 IEEE. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.relation.isPartOf | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | - |
dc.title | Development of a Low-Complexity, Cost-Effective Digital Beamformer Architecture for High-Frequency Ultrasound Imaging | - |
dc.type | Article | - |
dc.identifier.doi | 10.1109/TUFFC.2017.2690991 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, v.64, no.6, pp.1002 - 1008 | - |
dc.identifier.wosid | 000402711500008 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 1008 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 1002 | - |
dc.citation.title | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | - |
dc.citation.volume | 64 | - |
dc.contributor.affiliatedAuthor | Kim, H.H. | - |
dc.identifier.scopusid | 2-s2.0-85020311935 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | IN-VIVO | - |
dc.subject.keywordPlus | PHASED-ARRAY | - |
dc.subject.keywordPlus | REAL-TIME | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | MICE | - |
dc.subject.keywordPlus | MHZ | - |
dc.subject.keywordAuthor | Array transducer | - |
dc.subject.keywordAuthor | beamformer | - |
dc.subject.keywordAuthor | high-frequency ultrasound (HFUS) | - |
dc.relation.journalWebOfScienceCategory | Acoustics | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Acoustics | - |
dc.relation.journalResearchArea | Engineering | - |
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