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Cyclotron produced nuclides for PET imaging and radiotracer studies- [electronic resource]
Cyclotron produced nuclides for PET imaging and radiotracer studies - [electronic resource...
Cyclotron produced nuclides for PET imaging and radiotracer studies- [electronic resource]

상세정보

자료유형  
 학위논문(국외)
자관 청구기호  
기본표목-개인명  
표제와 책임표시사항  
Cyclotron produced nuclides for PET imaging and radiotracer studies - [electronic resource] / Brossard, Thomas W.
발행, 배포, 간사 사항  
형태사항  
1 online resource(135 p)
일반주기  
Source: Dissertation Abstracts International, Volume: 78-03(E), Section: B.
일반주기  
Adviser: J. David Robertson.
학위논문주기  
Thesis (Ph.D.)--University of Missouri - Columbia, 2015.
요약 등 주기  
요약Three fluorine-18-labelled analogs of sucrose, 6'-deoxy-6'[ 18F]fluorosucrose, 1'- deoxy-1'[18F]fluorosucrose, and 6-deoxy-6[18F]fluorosucrose, were prepared to investigate sucrose transport in wild-type and sut1 mutant maize by autoradiography. The fluorosucrose analogs were prepared using an automated synthesis modular lab. Direct fluorination of prepared stable precursors, followed by hydrolysis with K2CO3 in methanol and HPLC purification rendered 18F]fluorosucrose in 99% radiochemical purity. The collected product was evaporated to dryness before being reconstituted with 2 mL of 5.0 mM sucrose. This solution was applied to wild-type and sut1 mutant maize leaves to monitor transport. After an allotted transport time, the leaves were harvested near the stem and imaged on a phosphor plate (Fujifilm imaging plate BAS-MS 2025), and the plates were scanned on a GE Typhoon FLA 9000 fast laser scanner. A number of studies also had [U-14C]-sucrose applied with the fluorosucrose to compare the utility of the fluorosucrose analogs. The chemical syntheses of fluorosucrose were achieved in 2 hours with an average radiochemical yield of 10.7% (decay corrected) at 99% radiochemical purity. A total of 51 production runs have produced 108 mCi of fluorosucrose with an average production of 2 mCi/run.
요약 등 주기  
요약The wild-type plants demonstrated greater transport down the length of the leaves than plants lacking the sut1 gene. A fully automated, two-pot, two-step synthesis of fluorosucrose has been achieved with reasonable yields and high purity. The role for the maize sut1 gene in phloem loading was verified in vivo. This indicates the usefulness of [18F]fluorosucrose analogs as a validated tracer for sucrose transport for phloem loading in maize leaves. This reagent will greatly enable visualization of sucrose phloem transport in other studies of maize mutants with defects in carbohydrate accumulation, and it will allow for real-time imaging studies to be carried out using PET imaging systems.
요약 등 주기  
요약The production, separation, purification and specific activity determination of two radionuclides were also investigated. Routine production of copper-64 was implemented at the University of Missouri, using an enriched nickel-64 target plated on a gold disk, with a (p,n) nuclear reaction from a GE PETtrace cyclotron. The product was dissolved with 6 M HCl and separated on an anion exchange column. Different concentrations of HCl were used to elute the remaining nickel-64 for recycling, the copper-64 product and the impurities. The specific activity of the copper-64 was determined via a TETA titration followed by TLC and analysis with a radio-TLC plate reader. Over 4 Ci of copper-64 was produced over a two year period for researchers. To be more efficient with cyclotron beam time, the simultaneous production of zirconium-89 from a yttrium foil with a (p,n) reaction was examined. The experiments confirmed copper-64 and zirconium-89 could be co-produced using a small medical cyclotron. Additionally, the amount of copper-64 was not reduced, it was observed thicker yttrium foils enhanced copper-64 production due to the beam drop before the nickel-64 target which took better advantage of the peak of the excitation function. The maximum production of zirconium-89 and copper-64 were found to be 0.821 and 0.861 mCi/muA*h, respectively. Target stability, projected production, maximizing production and specific activity were investigated, reported and processes are now in place for routine production of both nuclides.
주제명부출표목-일반주제명  
주제명부출표목-일반주제명  
주제명부출표목-일반주제명  
부출표목-단체명  
기본자료저록  
Dissertation Abstracts International. 78-03B(E).
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
 원문정보보기
소장사항  
20170404 2017

MARC

 008170601s2015        us          esm        001c    eng
■001MOKWON01253846
■00520170418115924
■007cr
■020    ▼a9781369294590
■035    ▼a(MiAaPQ)AAI10180793
■040    ▼aMiAaPQ▼cMiAaPQ
■090    ▼a전자도서(박사논문)
■1001  ▼aBrossard,  Thomas  W.
■24510▼aCyclotron  produced  nuclides  for  PET  imaging  and  radiotracer  studies▼h[electronic  resource]▼cBrossard,  Thomas  W.
■260    ▼a[Sl]▼bUniversity  of  Missouri  -  Columbia▼c2015
■300    ▼a1  online  resource(135  p)
■500    ▼aSource:  Dissertation  Abstracts  International,  Volume:  78-03(E),  Section:  B.
■500    ▼aAdviser:  J.  David  Robertson.
■5021  ▼aThesis  (Ph.D.)--University  of  Missouri  -  Columbia,  2015.
■520    ▼aThree  fluorine-18-labelled  analogs  of  sucrose,  6'-deoxy-6'[  18F]fluorosucrose,  1'-  deoxy-1'[18F]fluorosucrose,  and  6-deoxy-6[18F]fluorosucrose,  were  prepared  to  investigate  sucrose  transport  in  wild-type  and  sut1  mutant  maize  by  autoradiography.  The  fluorosucrose  analogs  were  prepared  using  an  automated  synthesis  modular  lab.  Direct  fluorination  of  prepared  stable  precursors,  followed  by  hydrolysis  with  K2CO3  in  methanol  and  HPLC  purification  rendered    18F]fluorosucrose  in  99%  radiochemical  purity.  The  collected  product  was  evaporated  to  dryness  before  being  reconstituted  with  2  mL  of  5.0  mM  sucrose.  This  solution  was  applied  to  wild-type  and  sut1  mutant  maize  leaves  to  monitor  transport.  After  an  allotted  transport  time,  the  leaves  were  harvested  near  the  stem  and  imaged  on  a  phosphor  plate  (Fujifilm  imaging  plate  BAS-MS  2025),  and  the  plates  were  scanned  on  a  GE  Typhoon  FLA  9000  fast  laser  scanner.  A  number  of  studies  also  had  [U-14C]-sucrose  applied  with  the  fluorosucrose  to  compare  the  utility  of  the  fluorosucrose  analogs.  The  chemical  syntheses  of  fluorosucrose  were  achieved  in  2  hours  with  an  average  radiochemical  yield  of  10.7%  (decay  corrected)  at  99%  radiochemical  purity.  A  total  of  51  production  runs  have  produced  108  mCi  of  fluorosucrose  with  an  average  production  of  2  mCi/run.
■520    ▼aThe  wild-type  plants  demonstrated  greater  transport  down  the  length  of  the  leaves  than  plants  lacking  the  sut1  gene.  A  fully  automated,  two-pot,  two-step  synthesis  of  fluorosucrose  has  been  achieved  with  reasonable  yields  and  high  purity.  The  role  for  the  maize  sut1  gene  in  phloem  loading  was  verified  in  vivo.  This  indicates  the  usefulness  of  [18F]fluorosucrose  analogs  as  a  validated  tracer  for  sucrose  transport  for  phloem  loading  in  maize  leaves.  This  reagent  will  greatly  enable  visualization  of  sucrose  phloem  transport  in  other  studies  of  maize  mutants  with  defects  in  carbohydrate  accumulation,  and  it  will  allow  for  real-time  imaging  studies  to  be  carried  out  using  PET  imaging  systems.
■520    ▼aThe  production,  separation,  purification  and  specific  activity  determination  of  two  radionuclides  were  also  investigated.  Routine  production  of  copper-64  was  implemented  at  the  University  of  Missouri,  using  an  enriched  nickel-64  target  plated  on  a  gold  disk,  with  a  (p,n)  nuclear  reaction  from  a  GE  PETtrace  cyclotron.  The  product  was  dissolved  with  6  M  HCl  and  separated  on  an  anion  exchange  column.  Different  concentrations  of  HCl  were  used  to  elute  the  remaining  nickel-64  for  recycling,  the  copper-64  product  and  the  impurities.  The  specific  activity  of  the  copper-64  was  determined  via  a  TETA  titration  followed  by  TLC  and  analysis  with  a  radio-TLC  plate  reader.  Over  4  Ci  of  copper-64  was  produced  over  a  two  year  period  for  researchers.  To  be  more  efficient  with  cyclotron  beam  time,  the  simultaneous  production  of  zirconium-89  from  a  yttrium  foil  with  a  (p,n)  reaction  was  examined.  The  experiments  confirmed  copper-64  and  zirconium-89  could  be  co-produced  using  a  small  medical  cyclotron.  Additionally,  the  amount  of  copper-64  was  not  reduced,  it  was  observed  thicker  yttrium  foils  enhanced  copper-64  production  due  to  the  beam  drop  before  the  nickel-64  target  which  took  better  advantage  of  the  peak  of  the  excitation  function.  The  maximum  production  of  zirconium-89  and  copper-64  were  found  to  be  0.821  and  0.861  mCi/muA*h,  respectively.  Target  stability,  projected  production,  maximizing  production  and  specific  activity  were  investigated,  reported  and  processes  are  now  in  place  for  routine  production  of  both  nuclides.
■590    ▼aSchool  code:  0133.
■650  4▼aChemistry
■650  4▼aBotany
■650  4▼aNuclear  chemistry
■690    ▼a0485
■690    ▼a0309
■690    ▼a0738
■71020▼aUniversity  of  Missouri  -  Columbia.
■7730  ▼tDissertation  Abstracts  International▼g78-03B(E).
■773    ▼tDissertation  Abstract  International
■790    ▼a0133
■791    ▼aPh.D.
■792    ▼a2015
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T14489599▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a20170404▼f2017

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