Semiconductor detector for low-dose, high-resolution dental DR imaging

用于低剂量、高分辨率牙科 DR 成像的半导体探测器

• 批准号: 10927579
• 负责人: JAMES F CHRISTIAN
• 金额: $ 86.74万
• 依托单位: RADIATION MONITORING DEVICES, INC.
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-16 至 2025-08-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10927579
• 关键词: Semiconductor; detector; low; dose; resolution

Research & Related Other Project Information – Project Summary/Abstract Dental caries is a persistent public health problem that impacts a large fraction of the US population. Nearly all adults in the United States are considered at risk of developing tooth decay, and for children it is a common chronic disease. Though widely and routinely used, there are always concerns about patient exposure to X-rays during radiographic imaging – a concern especially heightened with children. Radiation Monitoring Devices (RMD) proposes to develop an improved digital X-ray detector for dental radiography that will retain all the benefits of a current digital technology, while improving sensitivity and reducing patient dose. The device will involve the integration of two technologies - silicon based imaging arrays and semiconductor x-ray conversion layers. The silicon capabilities are well understood, with CCD and CMOS devices well established in dental imaging. The application of a semiconductor conversion layer is the more innovative and challenging aspect of the concept. RMD's innovation is to replace the commonly used CsI or amorphous selenium X-ray receptors with the semiconductor thallium bromide (TlBr). TlBr will provide a much greater dose efficiency and higher image contrast. The advantage to dental imaging is that dentists will get the high resolution images that they are accustomed to, but now with a much lower dose to the patient. During Phase I, RMD will develop the processes to fabricate high quality films of TlBr and compare the technology to existing detector films to demonstrate the superiority of TlBr. The work plan will encompass film deposition, investigation of compatible electrode layers to work in conjunction with the TlBr, identification and mitigation strategies of technical challenges that arise, and completion of a wide range of electrical and physical tests to gauge X-ray sensitivity and image quality. In Phase II RMD will optimize the processes, fabricate X-ray imaging detectors on KA Imaging CMOS ROICs and fully characterize a complete detector system. The result of this research will be a new digital radiography detector with comparable or better image quality and significantly lower patient dose than currently used detectors.

研究及相关其他项目信息 - 项目摘要/摘要 龋齿是一个持续的公共卫生问题，影响了美国人口的很大一部分。 美国的成年人被认为面临蛀牙的风险，对于儿童而言，这是一个商业 慢性病虽然广泛使用，但X射线总是有 在影像学成像期间 - 特别关注儿童的问题。 辐射监测设备（RMD）建议为牙齿开发改进的数字X射线检测器 放射线照相将保留当前数字技术的所有好处，同时提高灵敏度和 减少患者剂量。 和半导体X射线转换层。 在牙科成像中建立的设备。 概念的创新和挑战性方面。 RMD的创新是用The代替常用的CSI或无定形X射线受体。 半导体溴化物（TLBR）。 对比。 习惯了，但现在对患者的剂量要低得多。 在第一阶段，RMD将开发制造TLBR高质量膜的过程，并比较 现有检测器的技术填补了TLBR的优势。 沉积，研究兼容电极层与TLB结合使用，识别和识别以及 缓解技术挑战的缓解策略以及各种电气和物理的压缩 测试X射线灵敏度和图像质量。 KA成像CMOS Roics的探测器并完全表征竞争的检测器系统 这项研究是新的数字X射线照相检测器，具有可比或更好的图像，并且显着 患者剂量低于目前使用的检测器。