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Proceedings Paper

Test results from a pixel readout chip for 2D dynamic x-ray imaging
Author(s): Camilla Ronnqvist; Richard Brenner; Sven Kullander; Kristian Ellingsberg; Arne Kjensmo; Einar Nygard
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Paper Abstract

A VLSI readout chip for a solid-state hybrid pixel detector for two-dimensional real-time imaging is part of a project with the goal to construct a large-area digital detector with good efficiency for X-rays in the energy range 20 - 70 keV. A new circuit concept with integrated analog counters in each cell makes the detector suitable for high-intensity dynamic imaging. The aim is to acquire 12-bit images with a speed of up to 100 frames per second. The detector concept also includes single-photon counting and an adjustable threshold. The size of the pixel is a trade-off between spatial resolution and amount of implemented logic, and is chosen to 270 micrometer X 270 micrometer. A 8 X 8-channel prototype readout chip, (ANGIE), with a pixel size of 250 micrometer X 250 micrometer, has been fabricated and tested. The results from functional tests are presented.

Paper Details

Date Published: 24 July 1998
PDF: 5 pages
Proc. SPIE 3336, Medical Imaging 1998: Physics of Medical Imaging, (24 July 1998); doi: 10.1117/12.317053
Show Author Affiliations
Camilla Ronnqvist, Uppsala Univ. (Sweden)
Richard Brenner, Uppsala Univ. (Sweden)
Sven Kullander, Uppsala Univ. (Sweden)
Kristian Ellingsberg, IDE AS (Norway)
Arne Kjensmo, IDE AS (Norway)
Einar Nygard, IDE AS (Norway)

Published in SPIE Proceedings Vol. 3336:
Medical Imaging 1998: Physics of Medical Imaging
James T. Dobbins III; John M. Boone, Editor(s)

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