서브메뉴
검색
The Next Generation of Imaging Genetics
The Next Generation of Imaging Genetics
Detailed Information
- 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
- Imaging genetics
- 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.
Preview
Export
ChatGPT Discussion
AI Recommended Related Books
Подробнее информация.
- Бронирование
- не существует
- моя папка
- Первый запрос зрения
- Non-Book Loan Application
- Nighttime Book Loan Application
Available after logging in.


