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Cephalometric landmark clarity in photostimulable phosphor images using pseudo-color and emboss enhancements

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International Journal of Computer Assisted Radiology and Surgery Aims and scope Submit manuscript

Abstract

Objective The conspicuity of cephalometric landmarks may be improved by pseudo color and emboss enhancements of 8 and 16 bit photostimulable phosphor (PSP) cephalograms reviewed by orthodontists.

Methods PSP cephalograms of orthodontic patients were obtained. These 8 bit and 16 bit images were viewed in random order in baseline “for processing,” emboss, pseudo color and emboss/pseudo color states. Ten observers viewed the images simultaneously and idependently. Selected soft tissue and hard tissue cephalometric landmarks and of overall image clarity were rated. Repeat images were included to determine intra observer reliability in making ratings.

Results Statistically significant differences were found in the preferred image state for both specific cephalometric landmark evaluation and image bit depth. The emboss state was most frequently rated highest for clarity of hard tissue landmarks. Pseudo color state was rated best for soft tissue landmarks. Interrater agreement varied between landmarks but was not altered significantly by bit depth. Intrarater agreement was high.

Conclusions Post-processing enhancement of PSP cephalograms is perceived to improve clarity of selected anatomic landmarks in PSP cephalograms.

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Abbreviations

IP:

Imaging plate

PSP:

Photostimulable phosphor

References

  1. Schaetzing R (2003) Computed radiography technology. Advances in digital radiography categorical course in diagnostic radiology physics (2003 syllabus). In: Annual meeting of the Radiological Society of North America, pp 7–22

  2. Cowen AR, Workman A, Price JS (1993) Physical aspects of photostimulable phosphor computed radiography. Br J Radiol 66:332–345

    Article  PubMed  CAS  Google Scholar 

  3. Kato H, Miyahara J, Takano M (1985) New computed radiography using scanning laser stimulated luminescence. Neurosurg Rev 8:53–62

    Article  PubMed  CAS  Google Scholar 

  4. Tateno Y, Iinuma TA, Takano M (1987) Computed radiography. Springer, Berlin Heidelberg New York

    Google Scholar 

  5. Kogutt MS, Jones JP, Perkins DD (1988) Low-dose digital computed radiography in pediatric chest imaging. Am J Roentgenol 151:775–779

    CAS  Google Scholar 

  6. Lim KF, Foong KW (1997) Phosphor-stimulated computed cephalometry: reliability of landmark identification. Br J Orthod 24:301–308

    Article  PubMed  CAS  Google Scholar 

  7. Naslund EB, Kruger M, Petersson A, Hansen K (1998) Analysis of low-dose digital lateral cephalometric radiographs. Dentomaxillofac Radiol 27:136–139

    Article  PubMed  CAS  Google Scholar 

  8. Wenzel A, Sewerin I (1991) Source of noise in digital subtraction radiography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 71:503–508

    CAS  Google Scholar 

  9. Delgado M (2001) Single versus twin peak histograms: orthodontic measurement accuracy using photostimulable phosphor lateral cephalograms. Masters Thesis, University of Louisville Graduate School

  10. Halazonetis D (2005) What do 8-bit and 12-bit grayscale mean and which should I use when scanning. Am J Orthod Dentofacial Orthop 127:387–388

    Article  PubMed  Google Scholar 

  11. Menig J (1999) The DenOptix digital radiographic system. J Clin Orthod 33:407–410

    PubMed  CAS  Google Scholar 

  12. Crozier S (1999) Is it time yet? Digital X-rays are here to stay, but how do you decide when to switch radiography systems? ADA News, 28–32

  13. Siegel EL, Reiner BI (2001) Educational exhibit at the 18th symposium for computer applications in radiology, Salt Lake City

  14. Farman TT, Farman AG (2000) Optimal processing and enhancement of 16-bit photostimulable phosphor images. Radiology 217(P):657

    Google Scholar 

  15. West KD (2003) Post-processing contrast enhancements in 8-bit and 16-bit photostimulable phosphor cephalograms. Masters Thesis, University of Louisville Graduate School

  16. Reddy MS, Bruch JM, Jeffcoat MK, Williams RC (1991) Contrast as an aid to interpretation in digital subtraction radiography. Oral Surg Oral Med Oral Pathol 71:763–769

    Article  PubMed  CAS  Google Scholar 

  17. Scarfe WC, Czerniejewski VJ, Farman AG, Avant SL, Molteni R (1999) In vivo accuracy and reliability of color-coded image enhancements for the assessment of periradicular lesion dimensions. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 88:603–611

    Article  PubMed  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Surgical and Hospital Dentistry, The University of Louisville School of Dentistry, 501 South Preston Street, Louisville, KY, 40292, USA

    Ryan B. Wiesemann, James P. Scheetz, Anibal Silveira, Taeko T. Farman & Allan G. Farman

Authors
  1. Ryan B. Wiesemann
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  2. James P. Scheetz
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  3. Anibal Silveira
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  4. Taeko T. Farman
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  5. Allan G. Farman
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Corresponding author

Correspondence to Allan G. Farman.

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Wiesemann, R.B., Scheetz, J.P., Silveira, A. et al. Cephalometric landmark clarity in photostimulable phosphor images using pseudo-color and emboss enhancements. Int J CARS 1, 105–112 (2006). https://doi.org/10.1007/s11548-006-0042-8

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  • DOI: https://doi.org/10.1007/s11548-006-0042-8

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