SBIR Phase I: Micromachined Scintillating Pixel X-Ray Imaging Plate

SBIR 第一阶段：微机械闪烁像素 X 射线成像板

基本信息

批准号：
9761264
负责人：
Charles Beetz
金额：
$ 10万
依托单位：
NANOSCIENCES CORP
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1998
资助国家：
美国
起止时间：
1998-01-01 至 1998-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9761264&HistoricalAwards=false
关键词：
SBIR Phase Micromachined Scintillating Pixel

项目摘要

This Small Business Innovative Research Phase I project focuses oil x-ray and particle imaging of biological specimens using radionuclides, radiotracers or x-ray beams. An imaging detector requires: detection efficiency close to unity; photon counting; high spatial resolution, comparable to film; improved contrast due to insensitivity to scattered x-rays or particles; liticar intensity response; large dynamic range; low noise; and differential attenuation imaging using x-ray energies. We propose to address these issues with a novel form of' high spatial precision imaging scintillator pixel plate, fabricated by micromachining of very high aspect ratio holes (length/diameter) in silicon. The Si holes will be formed into dielectric waveguides (optical fibers) by forming a cladding film, for example by oxidizing the walls to form SiO2. The holes will be filled with standard and novel scintillation materials, including index-matched collodal dispersions of nanocrystalline photolithographic techniques, with holes from 1 um-1 mm in diamiter, and plate thickness up to about 1 mm. The scintillator array is well-matched to the precision and spatial resolution of optical pixel detectors including CCD image intensifiers and film. This program may led to novel large area, high precision x-ray imagers, enabling replacement of film or enhancing film in medical and dental x-rays. It may also lead to ultra-high precision fiber-optic plates at low cost, and compact full aperture optical and x-ray collimators.

这个小型企业创新研究阶段I项目使用放射性核素，放射性示踪剂或X射线束将油X射线和生物标本的颗粒成像集中在生物标本中。成像检测器需要：接近统一的检测效率；光子计数；高空间分辨率，可与电影相当；由于对散射的X射线或颗粒不敏感而改善对比度； Liticar强度响应；大动态范围；低噪音；和使用X射线能量的差异成像。我们建议通过一种新型的“高空间精度成像闪烁体像素板”来解决这些问题，该磁带是通过硅中非常高的长宽比孔（长度/直径）微加工的。 SI孔将通过形成覆层膜形成介电波导（光纤），例如通过氧化壁形成SiO2。这些孔将充满标准和新颖的闪烁材料，包括纳米晶光义技术的索引匹配的胶结分散剂，轴是径于1 um-1 mm的孔，以及板厚度为约1 mm。闪光灯阵列与包括CCD图像增强器和膜在内的光学像素探测器的精确和空间分辨率相匹配。该程序可能会导致新颖的大面积，高精度X射线成像仪，从而替换胶片或在医疗和牙科X射线中增强膜。它也可能以低成本导致超高精度光纤板，并紧凑型全孔光学和X射线准直仪。