C-MOS flat-panel sensor for real-time X-ray imaging.

K Nakagawa; S Mizuno; Y Aoki; K Ohtomo

PubMed · 11153687

C-MOS flat-panel sensor for real-time X-ray imaging.

Abstract

PURPOSE: The aim of this report is to introduce a flat-panel, self-scanning, solid-state diagnostic X-ray imaging device using complementary metal-oxide-semiconductor (C-MOS) arrays for real time digital X-ray imaging and to present findings on its performance. METHODS: A device with a 5.12 cm by 5.12 cm sensor area was developed and tested. The device consists of a cesium iodide scintillator and C-MOS detector arrays. The detector arrays are composed of a regular arrangement of pixels (256x256), each of which is made of a C-MOS photodiode sensor coupled to a C-MOS FET (field effect transistor). RESULTS: A sampling speed of 30 frames per second and spatial resolution of 2.5 lines per mm were achieved. Noise level and maximum signal were 1.5 mV rms and 1.8 V, respectively. CONCLUSIONS: The C-MOS flat-panel sensor is a significant step in actualizing real-time X-ray imaging. A large area sensor needs to be fabricated for clincial use.

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Cesium Equipment Design Iodides Radiography Semiconductors Journal Article Research Support, Non-U.S. Gov't

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K Nakagawa, S Mizuno, Y Aoki, K Ohtomo. C-MOS flat-panel sensor for real-time X-ray imaging.. https://pubmed.ncbi.nlm.nih.gov/11153687/

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