ACTIVE ENERGY SELECTIVE CASSETTE

活性能量选择性盒

• 批准号: 3506886
• 负责人: Robert Alvarez
• 金额: $ 27.61万
• 依托单位: APREND TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3506886
• 关键词: X ray; bioengineering /biomedical engineering; biomedical equipment development; clinical biomedical equipment; computer program /software; electron optics; electronic spectra; image processing; lasers; luminescence; molecular energy level; phosphorescence; photostimulus; radiodiagnosis; radiography

Our objective is to develop an energy selective cassette for dual energy X-ray imaging. The cassette will use the technique of active modulation of luminescence gain invented by Aprend Technology. This approach has the promise of providing dramatic improvements in performance while being based on existing computed radiography detector technology. It uses photostimulable luminescent storage phosphor screens that can be read by the laser scanners of computed radiography systems. The data can then be processed by the system's computer. Dual energy X-ray imaging has the potential to increase significantly the diagnostic power of medical X-ray examinations. With it, the chemical composition of materials can be calculated from the X-ray data. Tissues can be selectively removed from the image based on their composition. By removing obscuring background structures, the detectability of medically important features is improved. The technique can enhance the visibility of microcalcifications in mammography or characterize calcium in solitary pulmonary nodules detected in chest radiography. The Phase I research developed two innovative approaches to energy selective cassettes using active modulation of luminescence gain. The specific aim of the Phase II research is to study these approaches, to implement prototypes, and to measure their performance in dual energy imaging.

我们的目标是开发一种用于双能源的能量选择盒式磁带 X射线成像。盒式磁带将使用有源调制技术 阿普伦德科技发明的发光增益。这种方法具有 承诺提供戏剧性的性能改进，同时 基于现有的计算机射线照相探测器技术。它使用 可读取的光激励发光存储荧光屏 计算机射线照相系统的激光扫描仪。然后，数据可以 由系统的计算机处理。 双能X射线成像有可能显著增加 医用X射线检查的诊断能力。与之相伴的是化学物质 材料的成分可以从X射线数据中计算出来。组织 可以根据它们的组成有选择地从图像中移除。 通过去除模糊的背景结构，可以检测到 医学上重要的特征得到了改进。这项技术可以增强 微钙化在乳房X光检查中的可见性或钙的特征 在胸片发现的孤立性肺结节中。 第一阶段的研究开发了两种创新的能源方法 使用发光增益主动调制的选择性盒式磁带。这个 第二阶段研究的具体目标是研究这些方法，以 实现原型，并以双能量测量其性能 成像。