On the dynamic range of different X-ray photon detectors in intra-oral radiography. A comparison of image quality in film, charge-coupled device and storage phosphor systems

Dento Maxillo Facial Radiology
E Borg, H G Gröndahl

Abstract

To compare film for intra-oral radiography with two charge-coupled device (CCD) and one storage phosphor system for digital imaging in respect of subjective image quality, detectability of small mass differences and appearance of burn-out effects and blooming phenomena at various exposure times. Dried mandibles with teeth from different areas were radiographed at exposures covering a relative range from 1 to 100. Image quality was subjectively evaluated after image processing, when applicable, using a visual grading scale from 0 to 10. The number of visible holes in an aluminium block was used to measure the detectability of small mass differences. Burn-out effects and blooming were evaluated by measuring widths of roots and of aluminium and plastic cylinders. Radiographs with the storage phosphor system achieved image quality scores similar to those of film but over a larger exposure range, while CCD images were rated lower and over a smaller range. All holes in the aluminium block were only detected with the storage phosphor system. While the widths of roots were strongly affected by sensor saturation in CCD images and by burn-out in film images, smaller effects were seen with the storage phosphor system. Similar results were...Continue Reading

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Citations

Aug 15, 2003·Dento Maxillo Facial Radiology·K YoshiuraS Kanda
May 14, 2004·Dento Maxillo Facial Radiology·W E R BerkhoutP F van der Stelt
Aug 13, 2011·Dento Maxillo Facial Radiology·Semanur DölekoğluD İlgüy
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Dec 6, 2012·TheScientificWorldJournal·Ali Murat AktanFaruk Akgünlü
Dec 11, 2002·The Journal of Prosthetic Dentistry·Keiji Koyanagi
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