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Deep Learning for Multi-modal Tomography Imaging: Radiation Dose, Image Artifacts, and Acquisition Time Reductions
Deep Learning for Multi-modal Tomography Imaging: Radiation Dose, Image Artifacts, and Acq...
Deep Learning for Multi-modal Tomography Imaging: Radiation Dose, Image Artifacts, and Acquisition Time Reductions

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211150954
ISBN  
9798383567142
DDC  
616
저자명  
Zhou, Bo.
서명/저자  
Deep Learning for Multi-modal Tomography Imaging: Radiation Dose, Image Artifacts, and Acquisition Time Reductions
발행사항  
[Sl] : Yale University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
232 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-01, Section: B.
주기사항  
Advisor: Liu, Chi;Duncan, James.
학위논문주기  
Thesis (Ph.D.)--Yale University, 2024.
초록/해제  
요약PET-CT/MRI is the most used multi-modal tomography imaging exam which can provide both functional and anatomical information from a single exam and aid clinical decision-making. The CT/MRI component focuses on visualizing the anatomical structures, and the PET component focuses on visualizing molecular-level functional activities in tissues. Millions of PET-CT/MRI scans were performed each year worldwide with wide applications in oncology, cardiology, neurology, and biomedical research. While being an indispensable multi-modal tomography imaging tool in medicine, PET-CT/MRI has several key issues limiting its broader impacts on patients, including 1) the potential hazard caused by radiation dose from the PET and CT, 2) the degraded image quality caused by reduced dose, metal implants, and motions, and 3) the prolonged acquisition time with increased motion and patient discomfort. Therefore, this dissertation aims to address these challenges by developing a line of deep-learning techniques for PET-CT/MRI radiation dose, image artifacts, and acquisition time reductions. Starting with CT, we first proposed a cascade reconstruction network with projection data fidelity for CT acquired with a reduced number of X-ray projections, thus reducing the radiation dose of the CT component. To address the metal artifacts under the low-dose acquisition conditions, we built up the concepts of dual-domain learning that learn signal restoration in both the image domain and the original data acquisition domain, i.e. sinogram. In PET imaging, to reduce the radiation dose and motion, we proposed the first AI reconstruction framework for low-dose gated PET imaging. We devised a unified motion correction and denoising deep network that allows joint optimization of motion estimation/correction among low-dose gated images and denoising of the motion-compensated image for high-quality PET reconstruction. To further reduce the PET acquisition time and correct motion regardless of type, we developed a deep-learning-aided reconstruction framework that allows modeling-free quasi-continuous motion estimation via a deep registration model, and conversion from short to long-acquisition image via a deep generative model. To enable training from multi-institutional data for obtaining a robust deep denoising model for PET, we also devised the first personalized deep denoising solution for multi-institutional co-training with no data sharing. To further reduce radiation in PET/CT, we built a population-prior-aided deep generation method for generating the attenuation map directly from low-dose PET to eliminate the need for CT for PET attenuation correction. Lastly, to accelerate MRI acquisition, we developed a dual-domain self-supervised learning scheme that allows high-quality accelerated MRI reconstruction without fully-sample k-space data as ground truth. In summary, the proposed techniques each aim to address a specific set of challenges in PET-CT/MRI, collectively adding new insights into how we can use AI to transform nuclear medicine imaging into a more safe, efficient, and high-quality exam tool for patient healthcare.
일반주제명  
Medical imaging
일반주제명  
Computer science
키워드  
Computed Tomography
키워드  
Deep Learning
키워드  
Magnetic Resonance Imaging
키워드  
Nuclear Medicine
키워드  
Positron Emission Tomography
기타저자  
Yale University Biomedical Engineering
기본자료저록  
Dissertations Abstracts International. 86-01B.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798383567142
■035    ▼a(MiAaPQ)AAI30993418
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616
■1001  ▼aZhou,  Bo.
■24510▼aDeep  Learning  for  Multi-modal  Tomography  Imaging:  Radiation  Dose,  Image  Artifacts,  and  Acquisition  Time  Reductions
■260    ▼a[Sl]▼bYale  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a232  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-01,  Section:  B.
■500    ▼aAdvisor:  Liu,  Chi;Duncan,  James.
■5021  ▼aThesis  (Ph.D.)--Yale  University,  2024.
■520    ▼aPET-CT/MRI  is  the  most  used  multi-modal  tomography  imaging  exam  which  can  provide  both  functional  and  anatomical  information  from  a  single  exam  and  aid  clinical  decision-making.  The  CT/MRI  component  focuses  on  visualizing  the  anatomical  structures,  and  the  PET  component  focuses  on  visualizing  molecular-level  functional  activities  in  tissues.  Millions  of  PET-CT/MRI  scans  were  performed  each  year  worldwide  with  wide  applications  in  oncology,  cardiology,  neurology,  and  biomedical  research.  While  being  an  indispensable  multi-modal  tomography  imaging  tool  in  medicine,  PET-CT/MRI  has  several  key  issues  limiting  its  broader  impacts  on  patients,  including  1)  the  potential  hazard  caused  by  radiation  dose  from  the  PET  and  CT,  2)  the  degraded  image  quality  caused  by  reduced  dose,  metal  implants,  and  motions,  and  3)  the  prolonged  acquisition  time  with  increased  motion  and  patient  discomfort.  Therefore,  this  dissertation  aims  to  address  these  challenges  by  developing  a  line  of  deep-learning  techniques  for  PET-CT/MRI  radiation  dose,  image  artifacts,  and  acquisition  time  reductions.  Starting  with  CT,  we  first  proposed  a  cascade  reconstruction  network  with  projection  data  fidelity  for  CT  acquired  with  a  reduced  number  of  X-ray  projections,  thus  reducing  the  radiation  dose  of  the  CT  component.  To  address  the  metal  artifacts  under  the  low-dose  acquisition  conditions,  we  built  up  the  concepts  of  dual-domain  learning  that  learn  signal  restoration  in  both  the  image  domain  and  the  original  data  acquisition  domain,  i.e.  sinogram.  In  PET  imaging,  to  reduce  the  radiation  dose  and  motion,  we  proposed  the  first  AI  reconstruction  framework  for  low-dose  gated  PET  imaging.  We  devised  a  unified  motion  correction  and  denoising  deep  network  that  allows  joint  optimization  of  motion  estimation/correction  among  low-dose  gated  images  and  denoising  of  the  motion-compensated  image  for  high-quality  PET  reconstruction.  To  further  reduce  the  PET  acquisition  time  and  correct  motion  regardless  of  type,  we  developed  a  deep-learning-aided  reconstruction  framework  that  allows  modeling-free  quasi-continuous  motion  estimation  via  a  deep  registration  model,  and  conversion  from  short  to  long-acquisition  image  via  a  deep  generative  model.  To  enable  training  from  multi-institutional  data  for  obtaining  a  robust  deep  denoising  model  for  PET,  we  also  devised  the  first  personalized  deep  denoising  solution  for  multi-institutional  co-training  with  no  data  sharing.  To  further  reduce  radiation  in  PET/CT,  we  built  a  population-prior-aided  deep  generation  method  for  generating  the  attenuation  map  directly  from  low-dose  PET  to  eliminate  the  need  for  CT  for  PET  attenuation  correction.  Lastly,  to  accelerate  MRI  acquisition,  we  developed  a  dual-domain  self-supervised  learning  scheme  that  allows  high-quality  accelerated  MRI  reconstruction  without  fully-sample  k-space  data  as  ground  truth.  In  summary,  the  proposed  techniques  each  aim  to  address  a  specific  set  of  challenges  in  PET-CT/MRI,  collectively  adding  new  insights  into  how  we  can  use  AI  to  transform  nuclear  medicine  imaging  into  a  more  safe,  efficient,  and  high-quality  exam  tool  for  patient  healthcare.
■590    ▼aSchool  code:  0265.
■650  4▼aMedical  imaging
■650  4▼aComputer  science
■653    ▼aComputed  Tomography
■653    ▼aDeep  Learning
■653    ▼aMagnetic  Resonance  Imaging
■653    ▼aNuclear  Medicine
■653    ▼aPositron  Emission  Tomography
■690    ▼a0574
■690    ▼a0800
■690    ▼a0984
■71020▼aYale  University▼bBiomedical  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g86-01B.
■790    ▼a0265
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160305▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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