Volume 1, Issue 2 (October 2016)

Original research papers

Medical Imaging

APPLICATION OF CONTRAST IMPROVEMENT METHODS FOR CORPULENT PATIENTS UNDERGOING CHEST SCREENING

L. Aslamova, N. Melenevska, E. Kulich, N. Miroshnichenko, S. Miroshnichenko

Pages: 143-146

DOI: 10.21175/RadJ.2016.02.026

Received: 2 APR 2015, Received revised: 22 MAY 2015, Accepted: 29 MAY 2015, Published online: 18 OCT 2016

Annual chest screening in Ukraine is a needed diagnostic procedure due to high level of tuberculosis, and it essentially contributes to the collective effective dose. Particularly this problem is actual for stout patients, who receive a higher exposure dose during chest screening, compared to average patients. This is done to obtain X-ray images with proper visual contrast and accuracy. In the present study, the results obtained with the application of anti-scatter grid technique, common for clinical fluorography examination, were compared to results obtained by image processing, as an improving visual contrast method for stout patients. In the present study, image processing increased the contrast value of test-object in the range of 2.0-2.73 times without ED increase; image processing after signal filtration with anti-scatter grid demonstrated the increase of image contrast 3 times in average along with the ED increase in Bucky factor to the 3.1-3.2.
  1. K.L. Fung, W.B. Gilboy, "The effect of beam tube potential variation on gonad dose to patients during chestradiography investigated using high sensitivity LiF:Mg, Cu, P thermoluminescent dosemeters", The British Journal of Radiology, vol. 74, pp 358-367, 2001.
    DOI: 10.1259/bjr.74.880.740358
  2. C.J. Martin, "The importance of radiation quality for optimization in radiology" Biomedical Imaging and Intervention Journal, vol. 3(2), pp e38, 2007.
    DOI: 10.2349/biij.3.2.e38
  3. J. Vassileva, "A phantom approach to find the optimal technical parameters for plain chest radiography", The British Journal of Radiology, vol. 77, pp 648-653, 2004.
    DOI: 10.1259/bjr/33291071
  4. P. Doyle, C.J. Martin, D. Gentle "Dose-image quality optimization in digital chest radiography", Radiation Protection Dosimetry, vol. 114 (1-3), pp 269-272, 2005.
    DOI: 10.1093/rpd/nch546
  5. J. Vassileva, "A phantom for dose-image quality optimization in chest radiography", The British Journal of Radiology, vol. 75, pp 837-842, 2002.
    DOI: 10.1259/bjr.75.898.750837
  6. P. Bernhardt, M. Lendl, F. Deinzer, "New technologies to reduce pediatric radiation doses", Pediatric Radiology, vol. 33 Suppl.2, pp 212-215, 2006.
    DOI: 10.1007/s00247-006-0212-4
  7. U. Redlich, C. Hoeschen, W. Doehring, "Assessment and optimization of the image quality of chest-radiography systems", Radiation Protection Dosimetry, vol. 114 (1-3), pp 264-268, 2005.
    DOI: 10.1093/rpd/nch559
  8. R. Fukui et al., "Evaluation of a noise reduction procedure for chest radiography", Yonago Acta medica, vol.56, pp 85-91 2013.
  9. E. Michel-Gonzalez, M.H. Cho, S.Y. Lee, "Geometric nonlinear diffusion filter and its application to X-ray imaging", BioMedical Engineering OnLine, 2011.
    DOI: 10.1186/1475-925X-10-47
  10. H. Precht, O. Gerke, K. Rosendahl, A. Tingberg, D. Waaler, "Digital radiography: optimization of image quality and dose using multi-frequency software", Pediatric Radiology, vol. 42, pp 1112-118, 2012.
    DOI: 10.1007/s00247-012-2385-3
  11. ContextVision, Available at: www.contextvision.com