본문

서브메뉴

Development and Applications of Cluster-Based Motion Resolved Technique for Cardiac Cine MRI in Complex Arrhythmias
Development and Applications of Cluster-Based Motion Resolved Technique for Cardiac Cine M...
Development and Applications of Cluster-Based Motion Resolved Technique for Cardiac Cine MRI in Complex Arrhythmias

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104845
ISBN  
9798290943862
DDC  
616
저자명  
Ming, Zhengyang.
서명/저자  
Development and Applications of Cluster-Based Motion Resolved Technique for Cardiac Cine MRI in Complex Arrhythmias
발행사항  
[Sl] : University of California, Los Angeles, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
166 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Advisor: Nguyen, Kim-Lien;Christodoulou, Anthony G.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2025.
초록/해제  
요약Magnetic resonance imaging (MRI) is prone to image blurring and artifacts due to motion, particularly in cardiac imaging. Electrocardiogram (ECG) gating was developed to compensate for cardiac motion during breath-holding and is effective for patients with sinus rhythm. For patients with irregular heart rhythms, arrhythmia rejection is used to filter out abnormal heartbeats, allowing ECG gating to operate on normal beats. However, when a high percentage of heartbeats are abnormal, this method can significantly prolong scan times, complicating the detection of actual cardiac motion. Recent studies have attempted to classify heartbeats into distinct types for specific reconstructions; however, these methods are only applicable to arrhythmias with defined patterns and lack effectiveness for highly irregular conditions, such as atrial fibrillation. Additionally, ECG-based techniques can be affected by noise and instability, particularly in high magnetic fields, while non-ECG-based methods usually assume periodic cardiac motion and are seldom tested on patients in atrial fibrillation. To address the challenges of motion in cardiac imaging for arrhythmia patients, this dissertation focuses on developing motion-resolving techniques for complex arrhythmias such as atrial fibrillation. The first objective is to establish a basic clustering method to demonstrate its effectiveness in managing motion in sinus rhythm and selected arrhythmia cases. The second objective involves customizing the clustering algorithm to enhance image quality and performance in the presence of highly irregular cardiac motion. The final objective examines the robustness of the adaptive clustering approach under various combinations of regular and irregular cardiac and respiratory motion, highlighting its potential for clinical use. This dissertation significantly advances our approach to resolving irregular motion in cardiac imaging and enhances the detection of arrhythmia dynamics. It also presents a universal clustering-based framework for addressing motion challenges in cardiac MRI.
일반주제명  
Medical imaging
일반주제명  
Biomedical engineering
일반주제명  
Health sciences
키워드  
Atrial fibrillation
키워드  
Cardiac cine imaging
키워드  
Cardiac motion
키워드  
Clustering algorithm
키워드  
Magnetic resonance imaging
기타저자  
University of California, Los Angeles Physics and Biology in Medicine 009Y
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017359179
■00520260202104845
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798290943862
■035    ▼a(MiAaPQ)AAI32173649
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616
■1001  ▼aMing,  Zhengyang.
■24510▼aDevelopment  and  Applications  of  Cluster-Based  Motion  Resolved  Technique  for  Cardiac  Cine  MRI  in  Complex  Arrhythmias
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a166  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aAdvisor:  Nguyen,  Kim-Lien;Christodoulou,  Anthony  G.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Los  Angeles,  2025.
■520    ▼aMagnetic  resonance  imaging  (MRI)  is  prone  to  image  blurring  and  artifacts  due  to  motion,  particularly  in  cardiac  imaging.  Electrocardiogram  (ECG)  gating  was  developed  to  compensate  for  cardiac  motion  during  breath-holding  and  is  effective  for  patients  with  sinus  rhythm.  For  patients  with  irregular  heart  rhythms,  arrhythmia  rejection  is  used  to  filter  out  abnormal  heartbeats,  allowing  ECG  gating  to  operate  on  normal  beats.  However,  when  a  high  percentage  of  heartbeats  are  abnormal,  this  method  can  significantly  prolong  scan  times,  complicating  the  detection  of  actual  cardiac  motion.  Recent  studies  have  attempted  to  classify  heartbeats  into  distinct  types  for  specific  reconstructions;  however,  these  methods  are  only  applicable  to  arrhythmias  with  defined  patterns  and  lack  effectiveness  for  highly  irregular  conditions,  such  as  atrial  fibrillation.  Additionally,  ECG-based  techniques  can  be  affected  by  noise  and  instability,  particularly  in  high  magnetic  fields,  while  non-ECG-based  methods  usually  assume  periodic  cardiac  motion  and  are  seldom  tested  on  patients  in  atrial  fibrillation.  To  address  the  challenges  of  motion  in  cardiac  imaging  for  arrhythmia  patients,  this  dissertation  focuses  on  developing  motion-resolving  techniques  for  complex  arrhythmias  such  as  atrial  fibrillation.  The  first  objective  is  to  establish  a  basic  clustering  method  to  demonstrate  its  effectiveness  in  managing  motion  in  sinus  rhythm  and  selected  arrhythmia  cases.  The  second  objective  involves  customizing  the  clustering  algorithm  to  enhance  image  quality  and  performance  in  the  presence  of  highly  irregular  cardiac  motion.  The  final  objective  examines  the  robustness  of  the  adaptive  clustering  approach  under  various  combinations  of  regular  and  irregular  cardiac  and  respiratory  motion,  highlighting  its  potential  for  clinical  use.  This  dissertation  significantly  advances  our  approach  to  resolving  irregular  motion  in  cardiac  imaging  and  enhances  the  detection  of  arrhythmia  dynamics.  It  also  presents  a  universal  clustering-based  framework  for  addressing  motion  challenges  in  cardiac  MRI.
■590    ▼aSchool  code:  0031.
■650  4▼aMedical  imaging
■650  4▼aBiomedical  engineering
■650  4▼aHealth  sciences
■653    ▼aAtrial  fibrillation
■653    ▼aCardiac  cine  imaging
■653    ▼aCardiac  motion
■653    ▼aClustering  algorithm
■653    ▼aMagnetic  resonance  imaging
■690    ▼a0574
■690    ▼a0541
■690    ▼a0566
■690    ▼a0769
■71020▼aUniversity  of  California,  Los  Angeles▼bPhysics  and  Biology  in  Medicine  009Y.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0031
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359179▼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
    TF19232 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.