A real-time, flat-panel, amorphous silicon, digital x-ray imager.
A real-time, flat-panel, amorphous silicon, digital x-ray imager.
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DOI：
10.1148/radiographics.15.4.7569143
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发表时间：
1995-07
期刊：
影响因子：
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通讯作者：
L. Antonuk;J. Yorkston;W. Huang;J. Siewerdsen;J. Boudry;Y. El‐Mohri;M. Marx
中科院分区：
文献类型：
--
作者：
L. Antonuk;J. Yorkston;W. Huang;J. Siewerdsen;J. Boudry;Y. El‐Mohri;M. Marx
作为实现全数字化放射科所需发展的一部分，作者研究了用于新型光电成像设备的薄膜光电二极管和晶体管。一种这样的装置，一种大面积、平板、非晶硅成像阵列，已经开发出来，目前正在测试中。该阵列的格式为512 x 560像素，像素对像素间距为450微米，面积为230 x 252 mm2，使其成为迄今为止开发的最大的自扫描固态成像阵列。该阵列与上方的x射线转换器一起使用。虽然该设备是专门为超高电压成像设计的，但它可以产生高质量、低空间分辨率的诊断性x射线图像。对拟人化头部、胸部和骨盆幻象的阵列图像和空间分辨率模式的定性比较表明，低空间分辨率的电影图像中的大部分信息内容都存在于相应的阵列图像中。目前的发展趋势是大面积，平板成像技术在不久的将来有望实现更高分辨率的阵列。
As part of the development necessary for implementing a fully digital radiology department, the authors have investigated thin-film photodiodes and transistors for use in new photoelectronic imaging devices. One such device, a large-area, flat-panel, amorphous silicon imaging array, has been developed and is currently being tested. The array has a format of 512 x 560 pixels, a pixel-to-pixel pitch of 450 microns, and an area of 230 x 252 mm2, making it the largest self-scanning, solid-state imaging array developed to date. The array is used in conjunction with an overlying x-ray converter. Although specifically designed for megavoltage imaging, the device can produce high-quality, low spatial resolution, diagnostic x-ray images. Qualitative comparisons of array images of anthropomorphic head, chest, and pelvic phantoms and a spatial resolution pattern suggest that much of the information content of the film images at low spatial resolution is present in the corresponding array images. Current trends in the development of large-area, flat-panel imaging technology hold the promise of higher resolution arrays in the near future.