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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]
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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