Novel High-Resolution Scintillation X-ray Detectors for Digital Dentistry
用于数字牙科的新型高分辨率闪烁 X 射线探测器
基本信息
- 批准号:9910101
- 负责人:
- 金额:$ 22.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-09-16 至 2022-03-15
- 项目状态:已结题
- 来源:
- 关键词:AddressAreaCaliberCollaborationsCoupledDentalDentistryDiagnosisDiagnostic ImagingDiagnostic radiologic examinationDigital X-RayDoseDose-RateEngineeringFilmGeneral HospitalsImageInferiorLaboratoriesLegal patentLogisticsLow Dose RadiationMeasuresMethodsModelingModernizationOpticsPerformancePhasePhotonsPolymersProblem SolvingProceduresPulp CanalsRadialResearchResolutionRoentgen RaysSmall Business Technology Transfer ResearchStructureSystemTechnologyTestingUniversitiesWait Timedesigndetectordigitalexpectationimaging detectorimprovedinnovationnoveloff-patentquantumsensor
项目摘要
Project Summary: Novel High-Resolution Scintillation X-ray Detectors for Digital
Dentistry
The transition from traditional film to digital X-ray detectors has resulted in significant
improvements across many areas for dental X-ray imaging ranging from decreased wait
times, improved logistics and even lower radiation dose rates. One significant
drawback remains with digital X-ray imaging however, which is that current digital X-ray
detectors used in dental imaging have suboptimal spatial resolution performance. The
image resolution for digital detectors is often inferior to what was previously achieved
using traditional film. This poses a problem when it is necessary to image small
features for various diagnoses and procedures within the field of dentistry. NGS
Detectors, LLC, in collaboration with partners at Lawrence Livermore National
Laboratories (LLNL) and Brown University have developed a high-resolution structured
scintillator that can be optically coupled with small pixel-pitch CCD and CMOS
photodetector chips to achieve spatial resolution performance up to an order of
magnitude better than current state-of-the-art digital X-ray detectors used in dental
imaging.
This novel design minimizes photon radial spread inherent to scintillators by using
principles of geometric confinement. Ordered optical microchannels with diameters as
small as 5 microns are infiltrated with high quantum-efficiency scintillating polymers.
This STTR Phase 1 proposes to further develop geometrically confined scintillators and
couple them to small pixel-pitch CDD or CMOS photodetector chips in order to
maximize spatial resolution performance for intraoral dental X-ray imaging. The first
step is to demonstrate that microchannel confinement of scintillators when coupled to
CCD and CMOS sensors will result in significant gains in spatial resolution. The second
step is to characterize the quantum efficiency and photon yield and develop an optical
model that provides a basis for comparing dose rates. Finally, optical engineering
improvements will be tested to maximize the quantum efficiency and minimize the dose
required for imaging using the detector system.
项目概要:用于数字化的新型高分辨率闪烁X射线探测器
口腔
从传统胶片到数字X射线探测器的转变,
牙科X射线成像在许多领域的改进,
时间,改善物流,甚至降低辐射剂量率。一个显著
然而,数字X射线成像仍然存在缺点,这是当前的数字X射线成像
用于牙齿成像的检测器具有次优的空间分辨率性能。的
数字探测器的图像分辨率通常低于以前所达到的分辨率
使用传统的胶片。这就带来了一个问题,当它是必要的图像小
用于牙科领域内的各种诊断和程序的功能。NGS
Detectors,LLC与Lawrence Livermore National的合作伙伴合作
实验室(LLNL)和布朗大学开发了一种高分辨率的结构化
可与小像素间距CCD和CMOS光学耦合的闪烁体
光电探测器芯片,以实现高达
幅度优于目前牙科使用的最先进的数字X射线探测器
显像
这种新颖的设计通过使用
几何约束原理。有序光学微通道,直径为
用高量子效率的聚合物渗透小至5微米。
该STTR第1阶段建议进一步开发几何约束的通风机,
将它们耦合到小像素间距CDD或CMOS光电探测器芯片,
最大化口腔内牙科X射线成像的空间分辨率性能。第一
步骤是证明当耦合到
CCD和CMOS传感器将显著提高空间分辨率。第二
第一步是表征量子效率和光子产额,
该模型为比较剂量率提供了基础。最后,光学工程
将对改进进行测试,以最大限度地提高量子效率并最小化剂量
这是使用检测器系统成像所需的。
项目成果
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