A liquid cathode for medical imaging X-ray sources
用于医学成像 X 射线源的液体阴极
基本信息
- 批准号:10756654
- 负责人:
- 金额:$ 18.72万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-02-01 至 2025-01-31
- 项目状态:未结题
- 来源:
- 关键词:3-DimensionalAgreementAnodesApplications GrantsCaliforniaCathodesCharacteristicsClinicalDataDevelopmentElectronsElementsExcisionFailureFederal GovernmentFilamentFutureHealthHousingHumanImageImaging technologyIndustryInternationalInvestmentsLifeLiquid substanceMeasuresMechanicsMedicalMedical ImagingMedical centerMetalsMotionPerformancePersonsReproducibilityResearchResolutionRoentgen RaysRotationSamplingSiteSourceSpeedSpottingsSurfaceSystemSystems DevelopmentTechnologyTimeTransducersTranslationsTungstenUniversitiesVacuumX-Ray Medical ImagingX-Ray Tomographyclinical applicationcostdesignexperimental studyhealingimaging detectorimaging modalityimaging systemimprovednovel strategiestechnology developmenttomographytomosynthesisvibration
项目摘要
PROJECT SUMMARY
It is generally agreed that the development of distributed X-ray sources (i.e., systems having multiple X-ray
sources contained within a single vacuum envelope) could fundamentally improve tomographic medical X-ray
imaging technology by removing the need for mechanical motion of the X-ray source. Removing such motion
provides the potential to develop more compact, higher-speed, and lower-cost X-ray imaging systems with
better image quality, new imaging modalities, and more widespread system availability. The net result would
be to make imaging systems with greater capabilities more widely available to a larger number of people. A
significant impediment to achieving this result has been the lack of an appropriate cathode (electron emitter)
technology for the distributed X-ray source.
This grant application proposes to explore a very different approach to cathodes for medical X-ray imaging
sources: a liquid cathode. This unique cathode uses an electrohydrodynamic instability to form field electron
emitting sites on the surface of a liquid metal with Faraday waves, induced by slight mechanical vibration of the
fluid by a piezoelectric transducer. Because the cathode is a liquid, it is self-healing, which will mitigate failure
mechanisms associated with field emission cathodes used to date, thereby resulting in high reliability and long
life. By distributing the resulting compact electron source elements in space, the X-ray focal spot distribution
can be changed, i.e., reconfigured electronically, in real time. This approach has the potential to shift the
paradigm of medical X-ray imaging systems by combining a reliable, long-lived, and robust source with an
electronically reconfigurable X-ray focal spot distribution.
The specific aims of this proposal focus on experiments to determine whether the liquid cathode approach has
the performance characteristics required for medical imaging applications. The aims are:
Aim 1. Fabricate liquid cathode testbed
Aim 2. Quantify electron emission characteristics of liquid cathode
Aim 3. Quantify X-ray emission characteristics of liquid cathode-based source
Aim 4. Develop preliminary liquid cathode-based designs for several widely used medical imaging applications
项目概要
人们普遍认为,分布式 X 射线源(即具有多个 X 射线的系统)的发展
包含在单个真空外壳内的源)可以从根本上改善断层医学 X 射线
成像技术,无需 X 射线源的机械运动。删除此类动议
提供了开发更紧凑、更高速、更低成本的 X 射线成像系统的潜力
更好的图像质量、新的成像方式以及更广泛的系统可用性。最终结果将是
使更多人能够更广泛地使用具有更强大功能的成像系统。一个
实现这一结果的重大障碍是缺乏合适的阴极(电子发射器)
分布式X射线源技术。
该拨款申请提议探索一种截然不同的医学 X 射线成像阴极方法
来源:液体阴极。这种独特的阴极利用电流体动力学不稳定性来形成场电子
液态金属表面的发射位点具有法拉第波,由金属的轻微机械振动引起
通过压电换能器的流体。因为阴极是液体,所以它具有自愈能力,这将减轻故障
迄今为止使用的与场发射阴极相关的机制,从而导致高可靠性和长寿命
生活。通过将所得的紧凑电子源元件分布在空间中,X射线焦斑分布
可以实时更改,即以电子方式重新配置。这种方法有可能改变
通过将可靠、长寿命和强大的源与
电子可重构X射线焦点分布。
该提案的具体目标集中在实验上,以确定液体阴极方法是否具有
医学成像应用所需的性能特征。目标是:
目标1.制作液体阴极测试台
目标 2. 量化液体阴极的电子发射特性
目标 3. 量化液体阴极源的 X 射线发射特性
目标 4. 为几种广泛使用的医学成像应用开发基于液体阴极的初步设计
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 }}
PAUL R SCHWOEBEL其他文献
PAUL R SCHWOEBEL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('PAUL R SCHWOEBEL', 18)}}的其他基金
A liquid cathode for medical imaging X-ray sources
用于医学成像 X 射线源的液体阴极
- 批准号:
10371749 - 财政年份:2021
- 资助金额:
$ 18.72万 - 项目类别:
A 2D Stationary X-ray Source System for Improved Breast Tomosynthesis Imaging
用于改进乳腺断层合成成像的 2D 固定 X 射线源系统
- 批准号:
10659113 - 财政年份:2017
- 资助金额:
$ 18.72万 - 项目类别:
A 2D Stationary X-ray Source System for Improved Breast Tomosynthesis Imaging
用于改进乳腺断层合成成像的 2D 固定 X 射线源系统
- 批准号:
10364342 - 财政年份:2017
- 资助金额:
$ 18.72万 - 项目类别:
A 2D Stationary X-ray Source System for Improved Breast Tomosynthesis Imaging
用于改进乳腺断层合成成像的 2D 固定 X 射线源系统
- 批准号:
10687768 - 财政年份:2017
- 资助金额:
$ 18.72万 - 项目类别:
A Prototype Stationary X-Ray Source Digital Breast Tomosynthesis System
原型固定式 X 射线源数字乳腺断层合成系统
- 批准号:
9287706 - 财政年份:2017
- 资助金额:
$ 18.72万 - 项目类别:
Real-Time Tomosynthesis Imaging for Vascular Dynamics
用于血管动力学的实时断层合成成像
- 批准号:
7860673 - 财政年份:2009
- 资助金额:
$ 18.72万 - 项目类别:
Matrix-Addressable X-ray Source for Medical Imaging: Prototyping Studies
用于医学成像的矩阵可寻址 X 射线源:原型研究
- 批准号:
7851338 - 财政年份:2009
- 资助金额:
$ 18.72万 - 项目类别:
Matrix-Addressable X-ray Source for Medical Imaging: Prototyping Studies
用于医学成像的矩阵可寻址 X 射线源:原型研究
- 批准号:
7659708 - 财政年份:2009
- 资助金额:
$ 18.72万 - 项目类别:
Real-Time Tomosynthesis Imaging for Vascular Dynamics
用于血管动力学的实时断层合成成像
- 批准号:
7738545 - 财政年份:2009
- 资助金额:
$ 18.72万 - 项目类别:
Matrix-Addressable X-ray Source for Medical Imaging
用于医学成像的矩阵可寻址 X 射线源
- 批准号:
6915060 - 财政年份:2004
- 资助金额:
$ 18.72万 - 项目类别:
相似海外基金
A study for cross borders Indonesian nurses and care workers: Case of Japan-Indonesia Economic Partnership Agreement
针对跨境印度尼西亚护士和护理人员的研究:日本-印度尼西亚经济伙伴关系协定的案例
- 批准号:
22KJ0334 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Grant-in-Aid for JSPS Fellows
Challenges of the Paris Agreement Exposed by the Energy Shift by External Factors: The Case of Renewable Energy Policies in Japan, the U.S., and the EU
外部因素导致的能源转移对《巴黎协定》的挑战:以日本、美国和欧盟的可再生能源政策为例
- 批准号:
23H00770 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
NSF-NOAA Interagency Agreement (IAA) for the Global Oscillations Network Group (GONG)
NSF-NOAA 全球振荡网络组 (GONG) 机构间协议 (IAA)
- 批准号:
2410236 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Cooperative Agreement
Conditions for U.S. Agreement on the Closure of Contested Overseas Bases: Relations of Threat, Alliance and Base Alternatives
美国关于关闭有争议的海外基地协议的条件:威胁、联盟和基地替代方案的关系
- 批准号:
23K18762 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Grant-in-Aid for Research Activity Start-up
MSI Smart Manufacturing Data Hub – Open Calls Grant Funding Agreement
MSI 智能制造数据中心 – 公开征集赠款资助协议
- 批准号:
900240 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Collaborative R&D
Continuation of Cooperative Agreement between U.S. Food and Drug Administration and S.C. Department of Health and Environmental Control (DHEC) for MFRPS Maintenance.
美国食品和药物管理局与南卡罗来纳州健康与环境控制部 (DHEC) 继续签订 MFRPS 维护合作协议。
- 批准号:
10829529 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
National Ecological Observatory Network Governing Cooperative Agreement
国家生态观测站网络治理合作协议
- 批准号:
2346114 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Cooperative Agreement
The Kansas Department of Agriculture's Flexible Funding Model Cooperative Agreement for MFRPS Maintenance, FPTF, and Special Project.
堪萨斯州农业部针对 MFRPS 维护、FPTF 和特别项目的灵活资助模式合作协议。
- 批准号:
10828588 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Robust approaches for the analysis of agreement between clinical measurements: development of guidance and software tools for researchers
分析临床测量之间一致性的稳健方法:为研究人员开发指南和软件工具
- 批准号:
MR/X029301/1 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Research Grant
Doctoral Dissertation Research: Linguistic transfer in a contact variety of Spanish: Gender agreement production and attitudes
博士论文研究:西班牙语接触变体中的语言迁移:性别协议的产生和态度
- 批准号:
2234506 - 财政年份:2023
- 资助金额:
$ 18.72万 - 项目类别:
Standard Grant














{{item.name}}会员




