New multilinear solid state detector for digital slot scan radiography

Bernard Munier; Roland Sottoriva; Paul M. de Groot

doi:10.1117/12.349506

28 May 1999 New multilinear solid state detector for digital slot scan radiography

Bernard Munier, Roland Sottoriva, Paul M. de Groot

Proceedings Volume 3659, Medical Imaging 1999: Physics of Medical Imaging; (1999) https://doi.org/10.1117/12.349506
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

A novel solid state detector has been developed for digital radiography. It is based on an assembly of CCD chips operated in TDI mode. The X-ray detection is achieved by a CsI scintillator layer which features a needle structure. It combines an excellent resolution with a high absorption efficiency. The detector is able to operate in 2 modes: a standard resolution mode and a high resolution mode. In the standard mode, the detector features a 440 mm long sensitive area and a 162 micrometer pixel size. The total number of pixels along detector direction is 2720. Along the scan direction, the detector features a 10.8 mm wide sensitive area. A TDI process is performed in the chip itself over 67 X- ray sensitive elements. A 440 mm X 440 mm sized image can be acquired in typically 1.2 second. The high resolution mode allows producing images with an 81 micrometer pixel size. The detection dynamic range is 10,000:1. The main performance characteristics of the detector are presented, such as DQE, MTF, dynamic range.

Citation Download Citation

Bernard Munier, Roland Sottoriva, and Paul M. de Groot "New multilinear solid state detector for digital slot scan radiography", Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); https://doi.org/10.1117/12.349506

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