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Proceedings Paper

Phosphor-covered junction CCD x-ray sensor for dental imaging
Author(s): Antonius J.G. Spiekerman; J. C. Staalenburg; E. J. van Leeuwen
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Paper Abstract

X-ray imaging devices for dental applications must have an image area of at least 3 X 4 cm2. MOS CCDs cover an area of about only 1.5 X 2.5 cm2, in this case the x-ray image should be reduced to these smaller dimensions. This can be realized by tapered optical fibers after the x-radiation has been converted into light. This procedure results in a rather bulky construction. Junction CCDs can be realized in the desired image area of 3 X 4 cm2, thus making the taper construction unnecessary. Experiments on a linear array Junction CCD covered with a phosphorescent layer have been carried out. These experiments show, that only 3.2 mR for one exposure is needed. This results in a very low radiation load for the patient. The radiation load for the sensor itself is very low too, which makes a high number of exposure possible during the lifetime of the device.

Paper Details

Date Published: 1 May 1994
PDF: 9 pages
Proc. SPIE 2163, Medical Imaging 1994: Physics of Medical Imaging, (1 May 1994); doi: 10.1117/12.174274
Show Author Affiliations
Antonius J.G. Spiekerman, Delft Univ. of Technology (Netherlands)
J. C. Staalenburg, Delft Univ. of Technology (Netherlands)
E. J. van Leeuwen, Univ. of Nijmegen (Netherlands)

Published in SPIE Proceedings Vol. 2163:
Medical Imaging 1994: Physics of Medical Imaging
Rodney Shaw, Editor(s)

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