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Bone Marrow MRI Captures Relevant Measures of Disease in Myelofibrosis- [electronic resource]
Bone Marrow MRI Captures Relevant Measures of Disease in Myelofibrosis- [electronic resource]

상세정보

자료유형  
 학위논문
Control Number  
0016935677
International Standard Book Number  
9798380373692
Dewey Decimal Classification Number  
610
Main Entry-Personal Name  
Robison, Tanner H.
Publication, Distribution, etc. (Imprint  
[S.l.] : University of Michigan., 2023
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2023
Physical Description  
1 online resource(165 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
General Note  
Advisor: Luker, Gary D.
Dissertation Note  
Thesis (Ph.D.)--University of Michigan, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Restrictions on Access Note  
This item must not be added to any third party search indexes.
Summary, Etc.  
요약Myelofibrosis (MF) is a fatal, hematopoietic stem cell (HSC) malignancy characterized by dysregulated blood cell production, destruction of the hematopoietic niche, progressive bone marrow fibrosis, and eventual bone marrow failure. Historically, drug approvals for MF treatment focus on two major endpoints, reducing both splenomegaly and severe constitutional symptoms. While addressing these manifestations of disease improves patient quality of life, reductions in spleen volume and symptoms do not significantly alter disease trajectory. Recently, the focus of treatment in MF has shifted toward restoration of healthy bone marrow architecture and a functional hematopoietic niche rather than focusing solely on alleviating symptoms. However, clinical evaluation of bone marrow relies on biopsy, a painful, invasive procedure that fails to capture heterogeneity of disease in bone marrow and cannot be repeated frequently in clinical oncology. Thus, accomplishing the new drug development goal of bone marrow disease modification requires novel approaches to monitor spatial and temporal bone marrow changes in both preclinical and clinical settings. This dissertation focuses on the initial steps of validating noninvasive magnetic resonance imaging (MRI) for evaluation of bone marrow in MF. To assess disease extent, progression, and response to therapy, we selected three quantitative MRI metrics for bone marrow: 1) apparent diffusion coefficient (ADC), 2) proton density fat fraction (PDFF), and 3) magnetization transfer ratio (MTR). PDFF and ADC respectively assess fat content and water movement and are useful for probing marrow hematopoietic composition. MTR probes changes in macromolecular structure, such as those observed with changing cellularity and extracellular matrix in MF. Using these three MRI metrics, we demonstrate an MRI framework for noninvasively evaluating bone marrow during disease progression and early treatment in a mouse model of MF. Importantly, we show MRI detects bone marrow heterogeneity as validated by histopathology. Next, we assess the capability of this MRI framework at meaningfully capturing treatment induced changes in progressive, myelofibrotic murine bone marrow. Using different treatments, we show that ADC, MTR, and PDFF distinguish between cases of effective and ineffective bone marrow treatment. Additionally, MRI identifies regional variations in bone marrow treatment efficacy, which were previously unobservable. Lastly, we evaluate the efficacy of MRI at characterizing bone marrow in patients with MF. We demonstrate that bone marrow MRI distinguishes between healthy and MF bone marrow and is consistent with bone marrow biopsy findings. Additionally, we show MRI evaluates regional and anatomic bone marrow differences that cannot be detected by bone marrow biopsy. Together, we present a robust MRI framework for evaluating preclinical and clinical bone marrow manifestations of MF. New methods for bone marrow evaluation are needed, and we believe these multiparametric MRI techniques set the stage for future drug development and mechanistic studies that will be vital to furthering research and clinical care in MF.
Subject Added Entry-Topical Term  
Biomedical engineering.
Subject Added Entry-Topical Term  
Oncology.
Subject Added Entry-Topical Term  
Pathology.
Index Term-Uncontrolled  
Myelofibrosis
Index Term-Uncontrolled  
Magnetic resonance imaging
Index Term-Uncontrolled  
Imaging biomarker
Index Term-Uncontrolled  
Bone marrow
Added Entry-Corporate Name  
University of Michigan Biomedical Engineering
Host Item Entry  
Dissertations Abstracts International. 85-03B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:642023

MARC

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■020    ▼a9798380373692
■035    ▼a(MiAaPQ)AAI30748341
■035    ▼a(MiAaPQ)umichrackham005187
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a610
■1001  ▼aRobison,  Tanner  H.
■24510▼aBone  Marrow  MRI  Captures  Relevant  Measures  of  Disease  in  Myelofibrosis▼h[electronic  resource]
■260    ▼a[S.l.]▼bUniversity  of  Michigan.  ▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a1  online  resource(165  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-03,  Section:  B.
■500    ▼aAdvisor:  Luker,  Gary  D.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■506    ▼aThis  item  must  not  be  added  to  any  third  party  search  indexes.
■520    ▼aMyelofibrosis  (MF)  is  a  fatal,  hematopoietic  stem  cell  (HSC)  malignancy  characterized  by  dysregulated  blood  cell  production,  destruction  of  the  hematopoietic  niche,  progressive  bone  marrow  fibrosis,  and  eventual  bone  marrow  failure.  Historically,  drug  approvals  for  MF  treatment  focus  on  two  major  endpoints,  reducing  both  splenomegaly  and  severe  constitutional  symptoms.  While  addressing  these  manifestations  of  disease  improves  patient  quality  of  life,  reductions  in  spleen  volume  and  symptoms  do  not  significantly  alter  disease  trajectory.  Recently,  the  focus  of  treatment  in  MF  has  shifted  toward  restoration  of  healthy  bone  marrow  architecture  and  a  functional  hematopoietic  niche  rather  than  focusing  solely  on  alleviating  symptoms.  However,  clinical  evaluation  of  bone  marrow  relies  on  biopsy,  a  painful,  invasive  procedure  that  fails  to  capture  heterogeneity  of  disease  in  bone  marrow  and  cannot  be  repeated  frequently  in  clinical  oncology.  Thus,  accomplishing  the  new  drug  development  goal  of  bone  marrow  disease  modification  requires  novel  approaches  to  monitor  spatial  and  temporal  bone  marrow  changes  in  both  preclinical  and  clinical  settings.  This  dissertation  focuses  on  the  initial  steps  of  validating  noninvasive  magnetic  resonance  imaging  (MRI)  for  evaluation  of  bone  marrow  in  MF.    To  assess  disease  extent,  progression,  and  response  to  therapy,  we  selected  three  quantitative  MRI  metrics  for  bone  marrow:  1)  apparent  diffusion  coefficient  (ADC),  2)  proton  density  fat  fraction  (PDFF),  and  3)  magnetization  transfer  ratio  (MTR).  PDFF  and  ADC  respectively  assess  fat  content  and  water  movement  and  are  useful  for  probing  marrow  hematopoietic  composition.  MTR  probes  changes  in  macromolecular  structure,  such  as  those  observed  with  changing  cellularity  and  extracellular  matrix  in  MF.  Using  these  three  MRI  metrics,  we  demonstrate  an  MRI  framework  for  noninvasively  evaluating  bone  marrow  during  disease  progression  and  early  treatment  in  a  mouse  model  of  MF.  Importantly,  we  show  MRI  detects  bone  marrow  heterogeneity  as  validated  by  histopathology.  Next,  we  assess  the  capability  of  this  MRI  framework  at  meaningfully  capturing  treatment  induced  changes  in  progressive,  myelofibrotic  murine  bone  marrow.  Using  different  treatments,  we  show  that  ADC,  MTR,  and  PDFF  distinguish  between  cases  of  effective  and  ineffective  bone  marrow  treatment.  Additionally,  MRI  identifies  regional  variations  in  bone  marrow  treatment  efficacy,  which  were  previously  unobservable.      Lastly,  we  evaluate  the  efficacy  of  MRI  at  characterizing  bone  marrow  in  patients  with  MF.  We  demonstrate  that  bone  marrow  MRI  distinguishes  between  healthy  and  MF  bone  marrow  and  is  consistent  with  bone  marrow  biopsy  findings.  Additionally,  we  show  MRI  evaluates  regional  and  anatomic  bone  marrow  differences  that  cannot  be  detected  by  bone  marrow  biopsy.    Together,  we  present  a  robust  MRI  framework  for  evaluating  preclinical  and  clinical  bone  marrow  manifestations  of  MF.  New  methods  for  bone  marrow  evaluation  are  needed,  and  we  believe  these  multiparametric  MRI  techniques  set  the  stage  for  future  drug  development  and  mechanistic  studies  that  will  be  vital  to  furthering  research  and  clinical  care  in  MF.
■590    ▼aSchool  code:  0127.
■650  4▼aBiomedical  engineering.
■650  4▼aOncology.
■650  4▼aPathology.
■653    ▼aMyelofibrosis
■653    ▼aMagnetic  resonance  imaging
■653    ▼aImaging  biomarker
■653    ▼aBone  marrow
■690    ▼a0541
■690    ▼a0992
■690    ▼a0571
■71020▼aUniversity  of  Michigan▼bBiomedical  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g85-03B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16935677▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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