MASDA-X A FLAT PANEL IMAGER FOR DIGITAL FLUOROSCOPY

该提案要求支持开发一种新的成像技术 允许创建Masda-X、多元素非晶态的技术 用于X射线的硅探测器阵列，第一个平板，数字成像 用于X射线透视的系统，MASDA-X阵列将由薄而平的 具有高达30x30cm2成像表面的面板。成像面 由个体成像的规则二维图案组成 像素。每个像素由一个氢化非晶硅组成 耦合到单个多晶硅场效应的光电二极管 允许成像阵列自扫描的晶体管。这些 像素的间距将达到100微米。Masda-X 阵列，当与荧光屏和读出一起使用时 电子产品也将在这个项目中开发，将允许高 高帧速率的信噪比荧光成像。这个 该项目的成功完成将导致创建一个 X射线像增强器(XRII)系统的更换技术 它们是目前进行透视检查的主要手段 成像。这一根本性的进步将给许多方面带来革命性的变化 透视检查的结果。平板成像器将具有大致的轮廓 和录像带一样。这种巨大的紧凑性 与XRII相比，系统将大大减少笨重和繁琐 将直接使医生和其他人员受益的设备 不同的临床环境。除了提供高分辨率， 高信噪比、数字图像以及高信噪比前景 便携式透视设备、平板成像器将消除 遮盖眩光问题和XRII系统的失谐问题。在……里面 此外，它们不会受到杂散磁场的影响，也不会 遭受扭曲，从而辅助定量分析，如血液 体积流量。因此，质量有保证的成像没有遮盖眩光， 失真和失谐将是可能的。的固态特性 成像表面意味着它可以在任何临床上设计 有利的配置(例如4：3用于胸部成像)。最后，当前 平板技术的发展在很大程度上意味着 可能会有更大的成像面板，最大可达60x60平方厘米 在这个十年结束之前。毫无疑问，这项技术将导致 在改进现有放射学技术和创造新的放射学技术方面 最终为病人提供更好的护理。

This proposal requests support for the development of a new imaging technology allowing the creation of MASDA-X, Multi-element Amorphous Silicon Detector Array for X-rays, the first flat-panel, digital imaging system for x-ray fluoroscopy, MASDA-X arrays will consist of thin, flat panels having up to a 30 by 30 cm2 imaging surface. The imaging surface consists of a regular two-dimensional pattern of individual imaging pixels. Each pixel consists of a single hydrogenated amorphous-silicon photodiode coupled to a single polycrystalline-silicon field-effect transistor which allow the imaging array to be self-scanning. These pixels will be spaced at a pitch as fine as 100 microm. The MASDA-X arrays, when used in conjunction with phosphor screens and with readout electronics also to be developed in this project, will permit high signal-to-noise fluoroscopic imaging at high frame rates. The successful completion of this project will result in the creation of a replacement technology for the x-ray image-intensifier (XRII) systems which are currently the primary means for performing fluoroscopic imaging. This fundamental advance will revolutionize numerous aspects of fluoroscopy. Flat panel imagers will have a profile approximately the same as that of a film cassette. This tremendous compaction compared to XRII systems will lead to far less bulky an cumbersome equipment which will directly benefit physicians and other personnel in a variety of clinical environments. Besides offering high resolution, high signal-to-noise, digital images as well as the prospect of high portable fluoroscopic units, flat panel imagers will eliminate the problem of veiling glare and the detuning problems of XRII systems. In addition, they will be unaffected by stray magnetic fields, and will not suffer distortion thereby assisting quantitative analysis such as blood volume flow. Thus, quality-assured imaging free from veiling glare, distortion, and detuning will be possible. The solid-state nature of the imaging surface means that it may be designed in any clinically advantageous configuration (eg. 4:3 for chest imaging). Lastly, current developments in the flat panel technologies imply that considerably larger imaging panels, up to 60 by 60 cm2, are likely to be available before the end of the decade. Undoubtedly, this technology will result in improvement of existing and the creation of new radiologic techniques ultimately resulting in better care for patients.