A METAL-OXIDE, CHARACTERISTIC-LINE X-RAY IMAGING SOURCE
金属氧化物特征线 X 射线成像源
基本信息
- 批准号:3501341
- 负责人:
- 金额:$ 5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:1988
- 资助国家:美国
- 起止时间:1988-04-01 至 1989-03-31
- 项目状态:已结题
- 来源:
- 关键词:X ray X ray spectrometry angiography atherosclerosis biomedical equipment development computer graphics /printing computer simulation coronary disorder electrodes energy source heart disorder diagnosis image processing mathematical model metal oxide noninvasive diagnosis particle accelerators phantom model radiodiagnosis
项目摘要
There is a need for a coronary-artery disease screening method
not requiring the risk of an arterial catheter. Digital-subtraction
radiographs using iodine-K-edge subtraction suffer from low x-ray
intensities and require large iodine concentrations precluding non-
invasive techniques. Brighter x-ray sources are needed. We
propose to conduct an evaluation of metal oxides as
characteristic-line x-ray emitters. Two types of devices will be
considered: (1) A high-current pulsed x-ray gun with a metal-
oxide-coated thin-target window, (2) A commercially available x-
ray tube with a modified metal-oxide-coated rotating anode.
These sources are expected to produce a useful flux for K-edge
dichromography of approximately 50 times greater than that of
filtered bremsstrah-lung. We have also developed a computer
simulation of iodine-K-edge dichromography which determines the
x-ray flux needed from imaging with a particular x-ray-detector
system. This simulation together with an estimate of the
characteristic-line x-ray production of our sources, indicate that
iodine-K-edge dichromography is possible. We will have at our
disposal critical research facilities of Varian Associates, the
Stanford Linear Accelerator Center, and Adelphi Technology Inc.
This includes x-ray detection equipment, x-ray sources, and
vapor-deposition facilities. We have developed a digital x-ray-
imaging system which is also available for this work. Adelphi
Technology Inc. has extensive experience developing advanced x-
ray sources for medical, scientific, and industrial applications. A
medical diagnostic imaging system based upon the characteristic-
line source being developed here promises a moderate-cost non-
invasive method for screening atherosclerosis.
需要一种冠状动脉疾病的筛查方法
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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Melvin Arthur Piestrup其他文献
Melvin Arthur Piestrup的其他文献
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{{ truncateString('Melvin Arthur Piestrup', 18)}}的其他基金
Quasi-monochromatic X-ray Source for Mammography
用于乳腺X线摄影的准单色X射线源
- 批准号:
6669658 - 财政年份:2002
- 资助金额:
$ 5万 - 项目类别:
Quasi-monochromatic X-ray Source for Mammography
用于乳腺X线摄影的准单色X射线源
- 批准号:
6486321 - 财政年份:2002
- 资助金额:
$ 5万 - 项目类别:
QUASI-MONOCHROMATIC X-RAY SOURCE FOR MAMMOGRAPHY
用于乳房X线照相术的准单色X射线源
- 批准号:
6140973 - 财政年份:2000
- 资助金额:
$ 5万 - 项目类别:
A QUASIMONOCHROMATIC X-RAY SOURCE FOR MAMMOGRAPHY
乳房X线照相术的准单色X射线源
- 批准号:
3493351 - 财政年份:1993
- 资助金额:
$ 5万 - 项目类别:
CHANNELING RADIATION FOR NON-INVASIVE ANGIOGRAPHY
用于非侵入性血管造影的引导辐射
- 批准号:
3508571 - 财政年份:1986
- 资助金额:
$ 5万 - 项目类别:
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