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Improving Ultrafast Ultrasound Imaging in Both Image Quality and Processing Speed
Improving Ultrafast Ultrasound Imaging in Both Image Quality and Processing Speed
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260209102900
- ISBN
- 9798291577875
- DDC
- 621.3
- 저자명
- Kou, Zhengchang.
- 서명/저자
- Improving Ultrafast Ultrasound Imaging in Both Image Quality and Processing Speed
- 발행사항
- [Sl] : University of Illinois at Urbana-Champaign, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 138 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Oelze, Michael L.
- 학위논문주기
- Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
- 초록/해제
- 요약Ultrafast power Doppler imaging has been explored as a powerful tool to image microvasculature because it can significantly boost the signal to noise ratio compared to that of traditional power Doppler imaging. However, most of these methods are computationally expensive and cannot be implemented in a real-time fashion. As an alternative, null subtraction imaging (NSI)-based ultrafast power Doppler has been proposed to provide high spatial resolution and good image quality without significantly increasing the computational cost. NSI-based power Doppler with the presence of contrast agents was able to provide high quality images with the ability to resolve two vessels that were 50 關m apart with low computational overhead. Aside from improving spatial resolution, NSI can also reduce grating lobes, which occurs when the wavelength is larger than the pitch of the imaging array. According to this feature, NSI was combined with pulse inversion (PI) harmonic imaging to improve the image quality of contrast free ultrafast power Doppler imaging. With NSI-based PI UPD imaging, a spatial resolution of 29 關m has been achieved with a short acquisition length of 162 ms.Ultrafast ultrasound imaging could generate digital channel data at a data rate far beyond the data transfer capabilities of current ultrasound research platforms. The processing speed of current CPU- or GPU-based beamformers cannot keep pace with the data generation speed. To amend this bridge between the data generation and processing, a novel design of field programmable gate array (FPGA) based beamformer has been proposed. In this study, a combination of a novel beamforming architecture based on delay reuse and the highly parallel feature of FPGA enabled an ultrafast ultrasound beamformer with up to 4.8 GSPS processing speed in terms of input sample rate or 29,000 frames per second in terms of frame rate. The power consumption of the proposed beamformer was only a little over 12 Watts. With such processing speed, continuous real time ultrafast ultrasound imaging is possible.
- 일반주제명
- Electrical engineering
- 일반주제명
- Computer engineering
- 일반주제명
- Medical imaging
- 키워드
- Ultrasound
- 키워드
- Pulse inversion
- 기타저자
- University of Illinois at Urbana-Champaign Electrical & Computer Eng
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798291577875
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■035 ▼a(MiAaPQ)httphdlhandlenet2142121931
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a621.3
■1001 ▼aKou, Zhengchang.
■24510▼aImproving Ultrafast Ultrasound Imaging in Both Image Quality and Processing Speed
■260 ▼a[Sl]▼bUniversity of Illinois at Urbana-Champaign▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a138 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Oelze, Michael L.
■5021 ▼aThesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
■520 ▼aUltrafast power Doppler imaging has been explored as a powerful tool to image microvasculature because it can significantly boost the signal to noise ratio compared to that of traditional power Doppler imaging. However, most of these methods are computationally expensive and cannot be implemented in a real-time fashion. As an alternative, null subtraction imaging (NSI)-based ultrafast power Doppler has been proposed to provide high spatial resolution and good image quality without significantly increasing the computational cost. NSI-based power Doppler with the presence of contrast agents was able to provide high quality images with the ability to resolve two vessels that were 50 關m apart with low computational overhead. Aside from improving spatial resolution, NSI can also reduce grating lobes, which occurs when the wavelength is larger than the pitch of the imaging array. According to this feature, NSI was combined with pulse inversion (PI) harmonic imaging to improve the image quality of contrast free ultrafast power Doppler imaging. With NSI-based PI UPD imaging, a spatial resolution of 29 關m has been achieved with a short acquisition length of 162 ms.Ultrafast ultrasound imaging could generate digital channel data at a data rate far beyond the data transfer capabilities of current ultrasound research platforms. The processing speed of current CPU- or GPU-based beamformers cannot keep pace with the data generation speed. To amend this bridge between the data generation and processing, a novel design of field programmable gate array (FPGA) based beamformer has been proposed. In this study, a combination of a novel beamforming architecture based on delay reuse and the highly parallel feature of FPGA enabled an ultrafast ultrasound beamformer with up to 4.8 GSPS processing speed in terms of input sample rate or 29,000 frames per second in terms of frame rate. The power consumption of the proposed beamformer was only a little over 12 Watts. With such processing speed, continuous real time ultrafast ultrasound imaging is possible.
■590 ▼aSchool code: 0090.
■650 4▼aElectrical engineering
■650 4▼aComputer engineering
■650 4▼aMedical imaging
■653 ▼aUltrasound
■653 ▼aUltrafast ultrasound
■653 ▼aPulse inversion
■690 ▼a0544
■690 ▼a0574
■690 ▼a0464
■71020▼aUniversity of Illinois at Urbana-Champaign▼bElectrical & Computer Eng.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0090
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17365943▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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