High Resolution Digital Imaging X-ray Detectors
高分辨率数字成像 X 射线探测器
基本信息
- 批准号:6830111
- 负责人:
- 金额:$ 9.99万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2004
- 资助国家:美国
- 起止时间:2004-09-17 至 2005-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
DESCRIPTION (provided by applicant):
The aim is to develop a high resolution, high contrast detector for digital x-ray imaging systems. The target detector would have a Detective Quantum Efficiency much greater than 80%, a limiting resolution of at least 10 lp/mm, ultra-low noise, linear response and a dynamic range of more than 14 bits. The proposal is to build such a detector by using CdZnTe crystals. The detector crystal is hybridized to a readout integrated circuit device that allows the signal to be collected efficiently, digitized and stored in a computer as an image matrix. The planned individual detector unit, designed for use in a slot scan system, has 192 stages in the scan direction and 384 columns in the non-scan direction. The detectors are planned to be mounted in a staggered array with overlap at the ends up to the full breast x-ray image width (approximately 25 cm) in the non-scan direction. The detector pixel pitch will be 50 microns with 100% fill factor. Compared to the present film systems, a reduction of patient dose by a factor of six can be achieved without loss of image quality. To achieve these objectives, in this proposal we plan to develop and demonstrate: a high quality and high spatial resolution bump bonding technique; an optimized readout IC for the CZT crystals; and a reliable, low-cost, high throughput technique to test and select high quality, high uniformity CZT crystals.
描述(由申请人提供):
其目的是开发一种用于数字X射线成像系统的高分辨率、高对比度探测器。目标探测器将具有远大于80%的探测量子效率、至少10lp/mm的极限分辨率、超低噪声、线性响应和超过14位的动态范围。这个提议是用镉锌碲晶体来建造这样的探测器。探测器晶体被混合到读出集成电路设备,该读出集成电路设备允许信号被有效地收集、数字化并作为图像矩阵存储在计算机中。计划中的单个探测器单元设计用于时隙扫描系统,在扫描方向上有192级,在非扫描方向上有384列。探测器计划安装在交错阵列中,在非扫描方向上端部重叠直到整个乳房X射线图像宽度(约25厘米)。探测器像素间距将为50微米,填充系数为100%。与目前的胶片系统相比,可以在不损失图像质量的情况下将患者剂量减少到原来的六分之一。为了实现这些目标,在这份提案中,我们计划开发和演示:高质量和高空间分辨率的凸点键合技术;针对CZT晶体的优化读出IC;以及用于测试和选择高质量、高一致性CZT晶体的可靠、低成本、高通量的技术。
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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M Albert Capote其他文献
M Albert Capote的其他文献
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{{ truncateString('M Albert Capote', 18)}}的其他基金
High Resolution Digital Imaging X-ray Detectors
高分辨率数字成像 X 射线探测器
- 批准号:
7039139 - 财政年份:2005
- 资助金额:
$ 9.99万 - 项目类别:
High Resolution Digital Imaging X-ray Detectors
高分辨率数字成像 X 射线探测器
- 批准号:
7005916 - 财政年份:2005
- 资助金额:
$ 9.99万 - 项目类别:
Practical Low-Cost High-Resolution Gamma Ray Sensor
实用的低成本高分辨率伽马射线传感器
- 批准号:
6791899 - 财政年份:2004
- 资助金额:
$ 9.99万 - 项目类别:
Solid State Gamma Ray Imaging Detectors, Novel Packaging
固态伽马射线成像探测器,新颖的包装
- 批准号:
6549209 - 财政年份:2002
- 资助金额:
$ 9.99万 - 项目类别:
Next Generation Gamma Detector Arrays for High Resoluti*
下一代高分辨率伽马探测器阵列*
- 批准号:
6479224 - 财政年份:2002
- 资助金额:
$ 9.99万 - 项目类别: