Innovative High Resolution Dental X-ray Imager

创新的高分辨率牙科 X 射线成像仪

• 批准号: 10020966
• 负责人: MICHAEL R. SQUILLANTE
• 金额: $ 47.16万
• 依托单位: RADIATION MONITORING DEVICES, INC.
• 依托单位国家: 美国
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10020966
• 关键词: Characteristics; Dental; Dentists; Deposition; Detection; Devices; Discipline; Dose; Electrodes; Emulsions; Film; Goals; Grain; Hybrids; Image; Imaging technology; Iodides; Mammography; Medical; Mercury; Methods; Noise; Patients; Performance; Polymers; Powder dose form; Process; Radiation Dose Unit; Radiation Monitoring; Resolution; Roentgen Rays; Selenium; Semiconductors; Shapes; Signal Transduction; Silicon; Structure; Surface; Technology; Testing; Thick; Variant; Work; base; contrast imaging; density; detector; digital; electric field; electrical property; high resolution imaging; imager; innovation; microCT; monitoring device; operation; physical property; prevent; prototype; receptor; sensor

Abstract Radiation Monitoring Devices (RMD) proposes to develop a new dental x-ray imager that will have all the advantages of a digital technology, retain the most desirable aspects of image quality that film emulsions provide, and most importantly, reduce dose to patients. The device will be a blend of two technologies – silicon based imaging arrays and semiconductor x-ray conversion layers. The silicon capabilities are better understood, with CCD and CMOS devices well established in dental imaging. The application of a semiconductor conversion layer is the more challenging aspect, but advances being made in related medical fields (such as mammography) demonstrate the potential for extraordinary quality images. RMD wants to bring a similar technological revolution to dental imaging. The variation to the above referenced technology is to replace the current x-ray receptor (selenium) with a different semiconductor layer – mercuric iodide (HgI2) – that will provide greater dose efficiency and higher image contrast. Instead of a-Si TFT arrays, a CMOS passive pixel array will be adapted for the HgI2 converter layer. The advantage to dental imaging is that dentists will get the high resolution images that they are accustomed to with film, but now with a much lower dose to the patient. RMD will work on tailoring mercuric iodide detection layers to a high resolution CMOS device. The work plan will encompass powder fabrication, evaluating layer compositions, preparing dielectric and electrode layers to work in conjunction with the HgI2 layer and CMOS structure, and completing a wide range of electrical and physical tests to gauge x-ray sensitivity and image quality. At completion, it is desired to have demonstrated a device with exceptional image potential quality that is better than conventional digital technology with phosphors and scintillators. And because of the key direct converter technology, the dose per image will be vastly reduced from current norms.

抽象的 辐射监测设备（RMD）提案，以开发新的牙科X射线成像仪 具有数字技术的所有优势，保留图像质量最理想的方面 该膜乳液提供，最重要的是减少对患者的剂量。该设备将是 两种技术的混合物 - 基于硅成像阵列和半导体X射线转换 层。 CCD和CMOS设备很好地理解了硅功能 建立在牙科成像中。半导体转换层的应用越多 具有挑战性的方面，但在相关的医疗领域（例如乳房X线摄影）取得了进步 展示了非凡质量图像的潜力。 RMD希望为牙科成像带来类似的技术革命。变化 以上引用的技术是用一个 不同的半导体层 - 碘化汞（HGI2） - 将提供更高的剂量效率 和更高的图像对比度。 CMOS被动像素阵列将改编而成，而不是A-Si TFT数组 对于HGI2转换器层。牙科成像的优势是牙医将获得高 他们习惯于胶片的分辨率图像，但现在剂量要低得多 病人。 RMD将致力于将汞碘化物检测层定制为高分辨率CMOS 设备。工作计划将包括粉末制造，评估层组成， 准备营养和电极层与HGI2层和CMOS一起工作 结构，并完成广泛的电气和物理测试以评估X射线灵敏度 和图像质量。完成后，希望已经演示了一个具有非凡的设备 图像潜在质量比使用磷光器和传统数字技术更好 闪光灯。并且由于具有关键的直接转换器技术，每个图像的剂量将是普遍的 从当前规范中降低。