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首页> 外文会议>Physics of Medical Imaging pt.3; Progress in Biomedical Optics and Imaging; vol.8 no.29; Proceedings of SPIE-The International Society for Optical Engineering; vol.6510 pt.3 >A new x-ray imaging technique for radiography mode of flat-panel imager
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A new x-ray imaging technique for radiography mode of flat-panel imager

机译：平板成像仪射线照相模式的X射线成像新技术

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摘要

A digital radiography system using a flat-panel imager, which has a novel imaging technique for a radiography mode, has been developed. A radiographic image captured by the new imaging technique has a wide dynamic range in comparison with conventional radiographic images. The purpose of this presentation is to show the basic performance of the image quality acquired by the new imaging technique and compare it with an image taken by a conventional technique. The flat-panel imager has a gain switching capability, normally used in a dynamic imaging mode for a cone-beam CT study. The gain switching method has two gain settings and switches between them automatically, depending on the incident dose to each pixel of flat-panel imager. As a result of the gain switching method, an image having wide dynamic range is achieved. In this study, we applied the gain switching method to the radiography mode, and achieved a radiographic image with wider dynamic range than a conventional radiograph. Furthermore, we have also developed an algorithm for calibration of the gain switching method in radiography mode.
机译：已经开发了使用平板成像器的数字放射线照相系统，其具有用于放射线照相模式的新颖的成像技术。与常规放射线图像相比，通过新的成像技术捕获的放射线图像具有较大的动态范围。本演示的目的是展示通过新的成像技术获得的图像质量的基本性能，并将其与常规技术拍摄的图像进行比较。平板成像仪具有增益切换功能，通常在动态成像模式下用于锥束CT研究。增益切换方法具有两个增益设置，并根据对平板成像器每个像素的入射剂量自动在它们之间切换。作为增益切换方法的结果，获得了具有宽动态范围的图像。在这项研究中，我们将增益切换方法应用于射线照相模式，并获得了比传统射线照相具有更宽动态范围的射线照相图像。此外，我们还开发了一种用于在射线照相模式下校准增益切换方法的算法。

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