1 May 1994 Phosphor-covered junction CCD x-ray sensor for dental imaging
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonius J.G. Spiekerman, Antonius J.G. Spiekerman, J. C. Staalenburg, J. C. Staalenburg, E. J. van Leeuwen, E. J. van Leeuwen, } "Phosphor-covered junction CCD x-ray sensor for dental imaging", Proc. SPIE 2163, Medical Imaging 1994: Physics of Medical Imaging, (1 May 1994); doi: 10.1117/12.174274; https://doi.org/10.1117/12.174274
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