New Technology for Computed Radiography

计算机放射线摄影新技术

• 批准号: 7038405
• 负责人: Andrew Karellas
• 金额: $ 61.09万
• 依托单位: EMORY UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-20 至 2009-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7038405
• 关键词: bioimaging /biomedical imaging; biomedical equipment development; clinical biomedical equipment; computer system design /evaluation; digital imaging; health care cost /financing; image enhancement; mammography; pediatrics; portable biomedical equipment; radiation dosage; radiodiagnosis; radiography; technology /technique development; thoracic radiography; whole body imaging /scanning

DESCRIPTION (provided by applicant): This research is aimed at exploring, developing, and evaluating a new type of computed radiography (CR) for digital mammography. This approach is designed to overcome the well-known limitations of current CR technology that are associated with supoptimal spatial resolution and dose efficiency. CR technology is the low cost approach to digital mammography but it has never been used clinically in the US due to the slow pace of development and the lack of a trully innovative approach. The proposed approach represents a radical departure from prior technology. It incorporates readily-available components, and integration can be inexpensive. The results of our extensive computational and experimental work, that suggest good image quality and dose efficiency, will be used to develop a prototype that incorporates the components for scanning CR plates. This would enable high optical signal capture efficiency, faster readout, good spatial resolution, compact size, and low cost. Evaluation of the electronic, optical and mechanical characteristics of the system will be performed that will prompt modifications for improved performance. Universally accepted methodology such as modulation transfer function and detective quantum efficiency will be applied for the evaluation of the imaging capabilities and overall performance of the new imaging system. Threshold contrast detail studies will be conducted to compare its performance with current technologies. It is anticipated that this new digital x-ray imaging approach will enable greater contrast and spatial resolution than existing state-of-the-art CR technology that has been attempted for digital mammography. CR technology is ideally suited and desperately needed for cost efficient digital mammography but the current technology has not yet met the high image quality standards that are required for this task. This research deals not only with the development of a protoype but also with the theoretical formulation to predict the performance of the proposed and aother types of CR devices under a variety of conditions. This would enable the development of state-of-the art CR devices that are equivalent or better to other x-ray imaging modalities with the added advantage of portatbility and ease of integration. The potential impact of this inherently low-cost high resolution CR plate reader in a cassette-like package can be very high as it can be easily adapted to the needs of current clinical practice.

描述（由申请人提供）：本研究旨在探索、开发和评价一种用于数字乳腺X线摄影的新型计算机X线摄影（CR）。该方法旨在克服当前CR技术的众所周知的局限性，这些局限性与最高空间分辨率和剂量效率相关。CR技术是数字乳腺X射线摄影的低成本方法，但由于发展速度缓慢和缺乏真正的创新方法，它从未在美国临床使用。所提出的方法代表了与现有技术的根本背离。它集成了现成的组件，集成成本低廉。我们广泛的计算和实验工作的结果表明，图像质量和剂量效率良好，将用于开发包含扫描CR板组件的原型。这将实现高的光信号捕获效率、更快的读出、良好的空间分辨率、紧凑的尺寸和低成本。将对系统的电子、光学和机械特性进行评估，这将促使进行改进以提高性能。普遍接受的方法，如调制传递函数和检测量子效率将被应用于新的成像系统的成像能力和整体性能的评估。将进行阈值对比详细研究，以比较其性能与当前技术。预计这种新的数字X射线成像方法将比用于数字乳腺X射线摄影的现有最先进CR技术实现更高的对比度和空间分辨率。CR技术非常适合且迫切需要经济高效的数字乳腺X射线摄影，但目前的技术尚未达到该任务所需的高图像质量标准。本研究不仅涉及原型的开发，而且还涉及理论公式，以预测在各种条件下所提出的和aother类型的CR设备的性能。这将使最先进的CR设备的发展，等同于或更好的其他X射线成像模式与便携性和易于集成的附加优势。这种盒状包装中的固有低成本高分辨率CR板读取器的潜在影响可能非常高，因为它可以很容易地适应当前临床实践的需求。