본문

서브메뉴

The Next Generation of Imaging Genetics
The Next Generation of Imaging Genetics
The Next Generation of Imaging Genetics

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104725
ISBN  
9798291561508
DDC  
574
저자명  
Jiang, Zhiwen.
서명/저자  
The Next Generation of Imaging Genetics
발행사항  
[Sl] : The University of North Carolina at Chapel Hill, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
220 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Includes supplementary digital materials.
주기사항  
Advisor: Zhu, Hongtu.
학위논문주기  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
초록/해제  
요약Imaging genetics elucidates how genetic variations influence the human brain and links these variations to brain-related traits, diseases, and disorders. Despite this promise, the computational challenges posed by high-dimensional imaging and genetic data remain substantial. In this dissertation, we develop novel statistical frameworks that enable imaging genetic analyses at the voxel/vertex level. With particular emphasis on computational efficiency, we aim to create atlases of genetic associations at the highest possible resolution and share summary statistics of the whole-genome variants for the entire image for secondary analyses.In Chapter 2, we propose Representation learning-based Voxel-level Genetic Analysis (RVGA) for genome-wide association analysis (GWAS). RVGA decomposes raw images into smooth signals and random errors, which enhances statistical power as well as reduces computational and resource demands by 2-3 orders of magnitude. We propose a scheme to store and share a minimal dataset of GWAS summary statistics. We introduce a unified estimator for voxel heritability, genetic correlations between voxels, and cross-trait genetic correlations between voxels and non-imaging phenotypes. Moreover, we incorporate partitioned heritability analysis into RVGA.In Chapter 3, we extend RVGA for rare variants and introduce Representation learning-based Voxel-level Rare Variant Analysis (RVRVA). We first propose a framework to correct for sample relatedness at each voxel. We then address the unique challenge of controlling the type I error rate in rare variant analysis due to the failure of large-sample theory. We incorporate threshold-free cluster enhancement (TFCE) to evaluate spatial significance of associated brain regions. We also share summary statistics that are flexible to define any variant sets and incorporate various functional annotations.In Chapter 4, we propose a method to estimate the trajectory of heritability from longitudinal data. The approach relies on functional data analysis to reconstruct trajectory of phenotypes and estimate heritability using GWAS summary statistics from latent variables. We show the time-varying genetic influences on phenotypes.We demonstrate the performance of our methods by comprehensive simulations and large-scale real data analysis from the UKB. We develop computationally efficient and user-friendly Python programs for RVGA and RVRVA in a toolbox called Highly Efficient Imaging Genetics (HEIG) at https://github.com/ Zhiwen-Owen-Jiang/heig.
일반주제명  
Biostatistics
일반주제명  
Bioinformatics
일반주제명  
Medical imaging
일반주제명  
Genetics
키워드  
Computational efficiency
키워드  
Imaging genetics
키워드  
Principal component analysis
키워드  
Representation learning
키워드  
Genetic variations
기타저자  
The University of North Carolina at Chapel Hill Biostatistics
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017358601
■00520260202104725
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798291561508
■035    ▼a(MiAaPQ)AAI32122029
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a574
■1001  ▼aJiang,  Zhiwen.
■24510▼aThe  Next  Generation  of  Imaging  Genetics
■260    ▼a[Sl]▼bThe  University  of  North  Carolina  at  Chapel  Hill▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a220  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aIncludes  supplementary  digital  materials.
■500    ▼aAdvisor:  Zhu,  Hongtu.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2025.
■520    ▼aImaging  genetics  elucidates  how  genetic  variations  influence  the  human  brain  and  links  these  variations  to  brain-related  traits,  diseases,  and  disorders.  Despite  this  promise,  the  computational  challenges  posed  by  high-dimensional  imaging  and  genetic  data  remain  substantial.  In  this  dissertation,  we  develop  novel  statistical  frameworks  that  enable  imaging  genetic  analyses  at  the  voxel/vertex  level.  With  particular  emphasis  on  computational  efficiency,  we  aim  to  create  atlases  of  genetic  associations  at  the  highest  possible  resolution  and  share  summary  statistics  of  the  whole-genome  variants  for  the  entire  image  for  secondary  analyses.In  Chapter  2,  we  propose  Representation  learning-based  Voxel-level  Genetic  Analysis  (RVGA)  for  genome-wide  association  analysis  (GWAS).  RVGA  decomposes  raw  images  into  smooth  signals  and  random  errors,  which  enhances  statistical  power  as  well  as  reduces  computational  and  resource  demands  by  2-3  orders  of  magnitude.  We  propose  a  scheme  to  store  and  share  a  minimal  dataset  of  GWAS  summary  statistics.  We  introduce  a  unified  estimator  for  voxel  heritability,  genetic  correlations  between  voxels,  and  cross-trait  genetic  correlations  between  voxels  and  non-imaging  phenotypes.  Moreover,  we  incorporate  partitioned  heritability  analysis  into  RVGA.In  Chapter  3,  we  extend  RVGA  for  rare  variants  and  introduce  Representation  learning-based  Voxel-level  Rare  Variant  Analysis  (RVRVA).  We  first  propose  a  framework  to  correct  for  sample  relatedness  at  each  voxel.  We  then  address  the  unique  challenge  of  controlling  the  type  I  error  rate  in  rare  variant  analysis  due  to  the  failure  of  large-sample  theory.  We  incorporate  threshold-free  cluster  enhancement  (TFCE)  to  evaluate  spatial  significance  of  associated  brain  regions.  We  also  share  summary  statistics  that  are  flexible  to  define  any  variant  sets  and  incorporate  various  functional  annotations.In  Chapter  4,  we  propose  a  method  to  estimate  the  trajectory  of  heritability  from  longitudinal  data.  The  approach  relies  on  functional  data  analysis  to  reconstruct  trajectory  of  phenotypes  and  estimate  heritability  using  GWAS  summary  statistics  from  latent  variables.  We  show  the  time-varying  genetic  influences  on  phenotypes.We  demonstrate  the  performance  of  our  methods  by  comprehensive  simulations  and  large-scale  real  data  analysis  from  the  UKB.  We  develop  computationally  efficient  and  user-friendly  Python  programs  for  RVGA  and  RVRVA  in  a  toolbox  called  Highly  Efficient  Imaging  Genetics  (HEIG)  at  https://github.com/  Zhiwen-Owen-Jiang/heig.
■590    ▼aSchool  code:  0153.
■650  4▼aBiostatistics
■650  4▼aBioinformatics
■650  4▼aMedical  imaging
■650  4▼aGenetics
■653    ▼aComputational  efficiency
■653    ▼aImaging  genetics
■653    ▼aPrincipal  component  analysis
■653    ▼aRepresentation  learning
■653    ▼aGenetic  variations
■690    ▼a0308
■690    ▼a0574
■690    ▼a0369
■690    ▼a0715
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bBiostatistics.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358601▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF16419 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.