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Indirect X-ray photon-counting image sensor with 27T pixel and 15erms accurate threshold

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4 Author(s)
Dierickx, B. ; Vrije Univ. Brussel, Brussels, Belgium ; Dupont, B. ; Defernez, A. ; Ahmed, N.

In X-ray imaging, as in other imaging domains, the ultimate sensitivity and signal-to-noise ratio are obtained when each incoming photon is counted - the so-called quantum limit. Present state-of-the-art digital radiography is largely “charge integration” based, which results in a read noise that is composed of the quantum-limited photon shot noise, but also of electronic read noise and excess noise due to the non-reproducible charge packet sizes per absorbed X-ray photon.

Published in:

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International

Date of Conference:

20-24 Feb. 2011