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Application of Photoacoustic and Multimodality Imaging in Biomarker Detection
Application of Photoacoustic and Multimodality Imaging in Biomarker Detection
Application of Photoacoustic and Multimodality Imaging in Biomarker Detection

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자료유형  
 학위논문 서양
최종처리일시  
20260202103640
ISBN  
9798314874103
DDC  
610
저자명  
Zhai, Tianqu.
서명/저자  
Application of Photoacoustic and Multimodality Imaging in Biomarker Detection
발행사항  
[Sl] : University of Michigan, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
129 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
주기사항  
Advisor: Guo, L. Jay;Wang, Xueding.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2025.
초록/해제  
요약Photoacoustic (PA) imaging (PAI) is an imaging technique that fills the gap of penetration and resolution between optical imaging and ultrasound imaging, allowing imaging with optical contrast at deep tissue with high resolution. It serves as a powerful tool in disease research for its capabilities of providing rich information about the tissue physiological parameters. Disease research, on the other hand, needs the investigation of the pathological alterations to guide disease etiology and treatment evaluation. Driven by the need, this thesis discussed several methodologies involving PAI and PAI-based multimodality imaging techniques to investigate the biomarkers related to two disease model: rodent prostate cancer model and rodent Alzheimer's disease (AD) model.In the first disease model, we used multispectral photoacoustic tomography (MSPT), assisted with a tumor-targeting hypoxia-sensing probe (NOx-JS013) to investigate hypoxia in aggressive and non-aggressive tumors. We showed that NOx-JS013 is capable of targeting aggressive cancer cells, while shifting absorption and fluorescence spectrum upon incubation in a hypoxia environment. We developed a method for MSPT unmixing successfully unmixed signals of NOx-JS013 from the tumor environment. With NOx-JS013 and MSPT, we can visualize the tumor hypoxia with high specificity and sensitivity, and hence provide insight into tumor microenvironment.The second disease models were investigated in three experiments. In chapter 3, we present the application of a multimodality imaging system in retinal biomarker detection for mice with AD. We developed a multimodality ophthalmoscope combining OR-PAM and OCT, targeting the vasculature, retinal layer structure and Aβ deposition in the retina of mice with AD. We successfully demonstrated the Aβ deposition in the retina of AD mice with a customized antibody-conjugated gold nanochain as a contrast agent. Meanwhile, our OCT result suggests that certain layers of the retina may be affected by AD, reflected by the thickness changing correlated with AD.In chapter 4 and 5, we further explore the application of multimodality imaging in cerebral biomarker detection of AD mice. With OR-PAM and confocal fluorescence microscopy (CFM) combined system, we investigated cortical brain vasculature and Aβ plaque deposition in AD mice. The Aβ is labeled with a fluorescent dye, CRANAD-3. With resolution capable of imaging capillaries and single plaque deposition, we observed the decline of small vessel density correlated with AD, and the increase of Aβ density correlated with both AD and aging. Furthermore, we expanded the study and performed a longitudinal imaging for a period of three months. We described a longitudinal brain window that's transparent to both optics and ultrasound, with which we monitored vasculature, Aβ plaque deposition, blood flow and blood oxygenation. The result suggests that the trend of both small vessel density and Aβ density are affected by AD in the age span from nine to twelve months. Meanwhile, we observed a decline in blood oxygen saturation in the vein of AD. In this study. The multimodal platform proves to be a powerful tool for multi-dimensional biomarker monitoring.
일반주제명  
Biomedical engineering
일반주제명  
Electrical engineering
일반주제명  
Computer science
일반주제명  
Medical imaging
키워드  
Photoacoustic
키워드  
Optical imaging
키워드  
Alzheimer's disease
키워드  
Tumor hypoxia
기타저자  
University of Michigan Electrical and Computer Engineering
기본자료저록  
Dissertations Abstracts International. 86-11B.
전자적 위치 및 접속  
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MARC

 008260126s2025        us                              c    eng  d
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■00520260202103640
■006m          o    d                
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■020    ▼a9798314874103
■035    ▼a(MiAaPQ)AAI32092511
■035    ▼a(MiAaPQ)umichrackham006165
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a610
■1001  ▼aZhai,  Tianqu.
■24510▼aApplication  of  Photoacoustic  and  Multimodality  Imaging  in  Biomarker  Detection
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a129  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-11,  Section:  B.
■500    ▼aAdvisor:  Guo,  L.  Jay;Wang,  Xueding.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2025.
■520    ▼aPhotoacoustic  (PA)  imaging  (PAI)  is  an  imaging  technique  that  fills  the  gap  of  penetration  and  resolution  between  optical  imaging  and  ultrasound  imaging,  allowing  imaging  with  optical  contrast  at  deep  tissue  with  high  resolution.  It  serves  as  a  powerful  tool  in  disease  research  for  its  capabilities  of  providing  rich  information  about  the  tissue  physiological  parameters.  Disease  research,  on  the  other  hand,  needs  the  investigation  of  the  pathological  alterations  to  guide  disease  etiology  and  treatment  evaluation.  Driven  by  the  need,  this  thesis  discussed  several  methodologies  involving  PAI  and  PAI-based  multimodality  imaging  techniques  to  investigate  the  biomarkers  related  to  two  disease  model:  rodent  prostate  cancer  model  and  rodent  Alzheimer's  disease  (AD)  model.In  the  first  disease  model,  we  used  multispectral  photoacoustic  tomography  (MSPT),  assisted  with  a  tumor-targeting  hypoxia-sensing  probe  (NOx-JS013)  to  investigate  hypoxia  in  aggressive  and  non-aggressive  tumors.  We  showed  that  NOx-JS013  is  capable  of  targeting  aggressive  cancer  cells,  while  shifting  absorption  and  fluorescence  spectrum  upon  incubation  in  a  hypoxia  environment.  We  developed  a  method  for  MSPT  unmixing  successfully  unmixed  signals  of  NOx-JS013  from  the  tumor  environment.  With  NOx-JS013  and  MSPT,  we  can  visualize  the  tumor  hypoxia  with  high  specificity  and  sensitivity,  and  hence  provide  insight  into  tumor  microenvironment.The  second  disease  models  were  investigated  in  three  experiments.  In  chapter  3,  we  present  the  application  of  a  multimodality  imaging  system  in  retinal  biomarker  detection  for  mice  with  AD.  We  developed  a  multimodality  ophthalmoscope  combining  OR-PAM  and  OCT,  targeting  the vasculature,  retinal  layer  structure  and  Aβ  deposition  in  the  retina  of  mice  with  AD.  We  successfully  demonstrated  the  Aβ  deposition  in  the  retina  of  AD  mice  with  a  customized  antibody-conjugated  gold  nanochain  as  a  contrast  agent.  Meanwhile,  our  OCT  result  suggests  that  certain  layers  of  the  retina  may  be  affected  by  AD,  reflected  by  the  thickness  changing  correlated  with  AD.In  chapter  4  and  5,  we  further  explore  the  application  of  multimodality  imaging  in  cerebral  biomarker  detection  of  AD  mice.  With  OR-PAM  and  confocal  fluorescence  microscopy  (CFM)  combined  system,  we  investigated  cortical  brain  vasculature  and  Aβ  plaque  deposition  in  AD  mice.  The  Aβ  is  labeled  with  a  fluorescent  dye,  CRANAD-3.  With  resolution  capable  of  imaging  capillaries  and  single  plaque  deposition,  we  observed  the  decline  of  small  vessel  density  correlated  with  AD,  and  the  increase  of  Aβ  density  correlated  with  both  AD  and  aging.  Furthermore,  we  expanded  the  study  and  performed  a  longitudinal  imaging  for  a  period  of  three  months.  We  described  a  longitudinal  brain  window  that's  transparent  to  both  optics  and  ultrasound,  with  which  we  monitored  vasculature,  Aβ  plaque  deposition,  blood  flow  and  blood  oxygenation.  The  result  suggests  that  the  trend  of  both  small  vessel  density  and  Aβ  density  are  affected  by  AD  in  the  age  span  from  nine  to  twelve  months.  Meanwhile,  we  observed  a  decline  in  blood  oxygen  saturation  in  the  vein  of  AD.  In  this  study.  The  multimodal  platform  proves  to  be  a  powerful  tool  for  multi-dimensional  biomarker  monitoring.
■590    ▼aSchool  code:  0127.
■650  4▼aBiomedical  engineering
■650  4▼aElectrical  engineering
■650  4▼aComputer  science
■650  4▼aMedical  imaging
■653    ▼aPhotoacoustic
■653    ▼aOptical  imaging
■653    ▼aAlzheimer's  disease
■653    ▼aTumor  hypoxia
■690    ▼a0544
■690    ▼a0541
■690    ▼a0984
■690    ▼a0574
■71020▼aUniversity  of  Michigan▼bElectrical  and  Computer  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g86-11B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358073▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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