Volume 3 Issue 6
Dec.  2010
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LIN Chao, ZHENG Yu-quan. Test and application of compact digital X-ray imaging system[J]. Chinese Optics, 2010, 3(6): 591-597.
Citation: LIN Chao, ZHENG Yu-quan. Test and application of compact digital X-ray imaging system[J]. Chinese Optics, 2010, 3(6): 591-597.

Test and application of compact digital X-ray imaging system

  • Received Date: 11 May 2010
  • Rev Recd Date: 13 Jul 2010
  • Publish Date: 20 Dec 2010
  • A compact digital X-ray imaging system which adopts an X-ray sensitive CCD as an imaging detector was introduced for the dental imaging. A tooth model and a resolution testing card were used to test the revolution and radiographic dosage, respectively, and the subsection linearity correction was used to calibrate the nonuniformity of coupling of CCD and switch screen. In order to identify the bad pixel, a linear correlation coefficient was calculated to avoid the misjudgement. The imaging system was applied to an X-ray detection required a high resolution and a small work-area and the results show that the resolution of imaging system is higher than 10 lp/mm, radiographic dosage is less than 10% in contrast with that of X-ray film, and the calibrated nonuniformity of image has reduced by 27.5%. Obtained results prove that the system can satisfy the system requirements of high-revolution, low- radiographic dosage, and has a strong applied potential in X-ray detection for small objects.

     

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