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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
Improving Ultrafast Ultrasound Imaging in Both Image Quality and Processing Speed

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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  
Ultrafast ultrasound
키워드  
Pulse inversion
기타저자  
University of Illinois at Urbana-Champaign Electrical & Computer Eng
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
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MARC

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■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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