2048 X 2048 PIXEL CCD X-RAY IMAGE SENSOR SYSTEM

2048 X 2048 像素 CCD X 射线图像传感器系统

• 批准号: 3491610
• 负责人: A DANFORTH COPE
• 金额: $ 5万
• 依托单位: PRINCETON SCIENTIFIC INSTRUMENTS, INC.
• 依托单位国家: 美国
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-09-15 至 1987-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3491610
• 关键词: clinical biomedical equipment; computer graphics /printing; image enhancement; image processing; imaging /visualization /scanning; optics; radiation detector; radiodiagnosis; radiography; semiconduction; television

This proposal is for the development and evaluation of an X-ray diagnostic imaging system based on a CCD type solid state image sensor having 2048x2048 pixels in a 55x55 mm format. The proposed test and evaluation program is designed to demonstrate the substantial superior X-ray imaging performance of this lens coupled CCD image sensor system as compared to X-ray image intensifier/television camera systems. While the superior image quality of a lens coupled system has been recognized for some time, they have not been sensitive enough. The new dimension of this proposal is the large format CCD television camera which allows for moderate demagnification in the optics and has a quantum efficiency exceeding 50% combined with readout noise equivalent to only a few X-rays per picture element. The CCD dynamic range exceeds 104 and the spatial frequency response at the 2048 pixel pitch (18.4 line pairs per mm) is approximately 50%. The proposed CCD based X-ray imaging system is expected to afford substantially higher contrast and other performance improvements as well as potentially lower overall system cost compared to state of the are image tube based systems. Princeton Scientific Instruments has the CCD and electronic equipment in hand to assemble the proposed CCD based X-ray imaging system and the skills to optimize the system performance and analyze the test results.

这项建议是为了开发和评估一种X光诊断 基于CCD型固态图像传感器的成像系统 2048x2048像素，55x55 mm格式。建议的测试和评估 计划旨在展示实质上优越的X射线成像 这种透镜耦合的CCD图像传感器系统的性能比较 X射线图像增强器/电视摄像系统。而上级 透镜耦合系统的图像质量已经被认识到一段时间了， 他们还不够敏感。这项提议的新维度是 大画幅CCD电视摄像机，允许中等分辨率 光学中的退磁，量子效率超过50% 结合读出噪声，相当于每张照片只有几条X射线 元素。CCD动态范围超过104，空间频率 在2048像素间距(每毫米18.4行对)下的响应大约是 50%。拟议的基于ccd的X射线成像系统预计将提供 更高的对比度和其他性能改进，以及 与ARE映像的状态相比，潜在更低的总体系统成本 基于管道的系统。普林斯顿科学仪器公司拥有电荷耦合器件和 手头有电子设备来组装拟议的基于电荷耦合器件的X射线 成像系统和优化系统性能的技巧以及 分析测试结果。