PARALLEL TRANSMIT ENABLED PULSE SEQUENCE DEVELOPMENT FOR HIGH FIELD MRI
用于高场 MRI 的并行传输脉冲序列开发
基本信息
- 批准号:8362954
- 负责人:
- 金额:$ 1.95万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-04-01 至 2012-03-31
- 项目状态:已结题
- 来源:
- 关键词:Annual ReportsChemicalsComplexDevelopmentDiscriminationFrequenciesFundingGrantImageMagnetic ResonanceMagnetic Resonance ImagingMapsMorphologic artifactsNational Center for Research ResourcesPatternPhysiologic pulsePredispositionPrincipal InvestigatorRadioReadingResearchResearch InfrastructureResolutionResourcesSourceSpectrum AnalysisSystemTechnologyTimeUnited States National Institutes of HealthVisitabstractingcombatcostdesignimprovedinterestradiofrequency
项目摘要
This subproject is one of many research subprojects utilizing the resources
provided by a Center grant funded by NIH/NCRR. Primary support for the subproject
and the subproject's principal investigator may have been provided by other sources,
including other NIH sources. The Total Cost listed for the subproject likely
represents the estimated amount of Center infrastructure utilized by the subproject,
not direct funding provided by the NCRR grant to the subproject or subproject staff.
High field MRI systems have the potential to enable ultra high spatial resolution imaging, provide enhanced susceptibility
contrast and improved chemical species discrimination in spectroscopy. However high field MRI also poses challenges in the
form of decreased radio frequency (RF) excitation homogeneity. This manifests as shading artifacts in the images, making
quantitative imaging challenging. Recent developments in multi-transmit radiofrequency pulse design offer a possibility of
combating this by using multiple parallel transmitters to excite a complex pattern in excitation k-space using RF and
gradient pulses in multiple channels that results in a net uniform excitation field across the region of interest. One of the
key inputs to such an RF pulse design is the so-called B1 map, a spatial mapping of the excitation field, which is a time
consuming step. Accurate but fast B1 mapping is hence key in generating shading-free images at high fields.
To read about other projects ongoing at the Lucas Center, please visit http://rsl.stanford.edu/ (Lucas Annual Report and
ISMRM 2011 Abstracts)
这个子项目是许多利用资源的研究子项目之一
由NIH/NCRR资助的中心拨款提供。子项目的主要支持
而子项目的主要调查员可能是由其他来源提供的,
包括其他NIH来源。 列出的子项目总成本可能
代表子项目使用的中心基础设施的估计数量,
而不是由NCRR赠款提供给子项目或子项目工作人员的直接资金。
高场MRI系统有潜力实现超高空间分辨率成像,提供增强的敏感性,
对比度和改进的光谱学中的化学物种辨别。然而,高场MRI也对磁共振成像技术提出了挑战。
射频(RF)激励均匀性降低的形式。这表现为图像中的阴影伪影,
定量成像具有挑战性。多发射射频脉冲设计的最新发展提供了以下可能性:
通过使用多个并行发射器来利用RF在激励k空间中激励复杂图案来克服这一点,以及
在多个通道中产生梯度脉冲,从而在感兴趣区域上产生净均匀激励场。之一
这种RF脉冲设计的关键输入是所谓的B1图,即激励场的空间映射,其是时间
消费步骤。因此,准确但快速的B1映射是在高场生成无阴影图像的关键。
要了解卢卡斯中心正在进行的其他项目,请访问http://rsl.stanford.edu/ (卢卡斯年度报告和
ISMRM 2011摘要)
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
MANOJ SARANANTHAN其他文献
MANOJ SARANANTHAN的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('MANOJ SARANANTHAN', 18)}}的其他基金
PARALLEL TRANSMIT ENABLED PULSE SEQUENCE DEVELOPMENT FOR HIGH FIELD MRI
用于高场 MRI 的并行传输脉冲序列开发
- 批准号:
8362945 - 财政年份:2011
- 资助金额:
$ 1.95万 - 项目类别:
相似海外基金
Understanding sustainable catalytic processes on complex melts to produce chemicals and power
了解复杂熔体生产化学品和电力的可持续催化过程
- 批准号:
RGPIN-2020-05980 - 财政年份:2022
- 资助金额:
$ 1.95万 - 项目类别:
Discovery Grants Program - Individual
Understanding sustainable catalytic processes on complex melts to produce chemicals and power
了解复杂熔体生产化学品和电力的可持续催化过程
- 批准号:
RGPIN-2020-05980 - 财政年份:2021
- 资助金额:
$ 1.95万 - 项目类别:
Discovery Grants Program - Individual
Understanding sustainable catalytic processes on complex melts to produce chemicals and power
了解复杂熔体生产化学品和电力的可持续催化过程
- 批准号:
RGPIN-2020-05980 - 财政年份:2020
- 资助金额:
$ 1.95万 - 项目类别:
Discovery Grants Program - Individual
Understanding sustainable catalytic processes on complex melts to produce chemicals and power
了解复杂熔体生产化学品和电力的可持续催化过程
- 批准号:
DGECR-2020-00480 - 财政年份:2020
- 资助金额:
$ 1.95万 - 项目类别:
Discovery Launch Supplement
Complex Mixtures of Endocrine Disrupting Chemicals in Relation to Cognitive Development
内分泌干扰化学物质的复杂混合物与认知发展的关系
- 批准号:
9893708 - 财政年份:2019
- 资助金额:
$ 1.95万 - 项目类别:
Elucidation of complex chemical pollution and its application to source analysis using a rapid screening of hazardous chemicals in soils.
通过快速筛查土壤中的危险化学品来阐明复杂的化学污染及其在来源分析中的应用。
- 批准号:
15K21702 - 财政年份:2015
- 资助金额:
$ 1.95万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
STTR Phase II: Chemical Sensors for In Situ Monitoring of Collector Chemicals in Complex Copper Mine Effluents
STTR 第二阶段:用于原位监测复杂铜矿废水中捕收剂化学品的化学传感器
- 批准号:
1058472 - 财政年份:2011
- 资助金额:
$ 1.95万 - 项目类别:
Standard Grant
STTR Phase I: Chemical Sensors for In situ Monitoring of Collector Chemicals in Complex Copper Mine Effluents
STTR 第一阶段:用于原位监测复杂铜矿废水中捕收剂化学品的化学传感器
- 批准号:
0930087 - 财政年份:2009
- 资助金额:
$ 1.95万 - 项目类别:
Standard Grant
Synthetic Studies on Complex Terpenoids with Bioactivities as Lead Compounds of Agricultural Chemicals
具有生物活性的复杂萜类化合物作为农用化学品先导化合物的合成研究
- 批准号:
21350021 - 财政年份:2009
- 资助金额:
$ 1.95万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Phylogeny and chemicals ecology of Hyles hawkmoths (Lepidoptera, Sphingidae) with special reference to the Hyles euphorbiae complex
海尔斯天蛾(鳞翅目,天蛾科)的系统发育和化学生态学,特别是海尔斯大戟复合体
- 批准号:
26170703 - 财政年份:2006
- 资助金额:
$ 1.95万 - 项目类别:
Research Grants