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
项目总结
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)
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PAUL R SCHWOEBEL其他文献
PAUL R SCHWOEBEL的其他文献
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{{ 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:
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