Journal of Digital Contents Society (디지털콘텐츠학회 논문지)

Digital Contents Society (한국디지털콘텐츠학회)
권호 표지

Evaluation on usefulness of three dimensional reconstructive computed tomography images after pedicle screws fixation

척추경 나사못 고정술 시행 후 3차원 재구성CT영상의 유용성 평가

  • 김현주 (순천향대학교 부천병원 영상의학과) ;
  • 장현철 (순천향대학교 부천병원 영상의학과) ;
  • 조재환 (경산1대학 방사선학과)
  • Received : 2010.11.24
  • Accepted : 2010.12.30
  • Published : 2010.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

By applying the various reformation techniques by using a circle raw data of after computed tomography image in the patient enforcing the spine screw fixation, this research tried to look into the various information including the exact location of the position of the screw spike and accuracy of an operation. In a clinical, by applying the or multi planar reformatting(MPR), that is the re-composition technique used mainly, maximum intensity projection (MIP), and volume rendering technique(VRT) and transformation removal from a register modifying VRT, video data were compared and were analyzed by the quantitative method and qualitative method. It is judged as the transformation volume rendering technique of the re-composition technique which is most useful in minimizing the artifact shadow by the exact location of the position of a screw and metal among the analysis and evaluation result computed tomography image reformation technique of the reformation image after the spine screw fixation.

본 연구는 척추경 나사못 고정술을 시행한 환자를 대상으로 고정술 전, 후 전산화 단층촬영 영상의 원 자료(raw data)를 이용하여 다양한 재구성 기법을 적용하여 나사못의 정확한 위치파악과 수술의 정확도 등 다양한 정보를 알아보고자 하였다. 임상에서 주로 이용 하는 재구성기법인 다평면재구성(MPR), 최대강도투영(MIP), 체적묘사기법(VRT)과 변형 제적묘사기법(modifying VRT)을 적용하여 영상데이터를 각 각 정량적 방법과 정성적 방법으로 비교 분석하였다. 재구성 영상의 분석 및 평가결과 전산화 단층촬영 영상재구성 기법 중 척추경 나사못 고정술 후 나사의 정확한 위치파악과 금속에 의한 인공음영을 최소화 시키는데 가장 유용한 재구성 기법으로는 변형 체적묘사기법으로 사료된다.

Keywords

References

  1. Krag MH, Beynnon BD, Pope MH, Frymoyer JW, Haugh LD, Weaver DL: An internal fixator for posterior application to short segments of the thoracic, lumbar or lumbosacral spine. Clin Orthop Vol. 203, No. 1, pp. 75-98, 1986.
  2. Roy-Camille R, Saillant G, Mazel C: Internal fixatio of the lumbar spine with pedicle screw plating. Clin Orthop Vol. 20, No. 1, pp. 7-17, 1986.
  3. Kawamata A, Ariji Y, Langlais RP. Three-dimensional computed tomography imaging in dentistry. Dent Clin North Am Vol. 44, No. 1, pp. 395-410, 2000.
  4. Calhoun PS, Kuszyk BS, Heath DG, Carley JC, Fishman EK. Threedimensional volume rendering of spiral CT data: theory and method. Radiographics Vol. 19, No. 2, pp. 745-64, 1999. https://doi.org/10.1148/radiographics.19.3.g99ma14745
  5. Kalender WA, Hebel R and Ebersberger J: Reduction of CT artifacts caused by metallic implants. Radiol, Vol. 164, No. 1, pp. 576-577, 1987. https://doi.org/10.1148/radiology.164.2.3602406
  6. Robertson DD, Weiss PJ,Fishman EK , Magid D and Walker PS: Evaluation of techniques for reducing artifacts in the presence of metallic orthopedic implants. J Compute Assist Tomogr, Vol. 12, No. 2, pp. 236-241, 1988. https://doi.org/10.1097/00004728-198803000-00012
  7. Robertson DD, Yuan J, Wang G, Vannier and WM: Total hip prosthesis metal artifact suppression using iterative deblurring reconstruction Vol. 21, No. 1, pp. 293-298, 1997. https://doi.org/10.1097/00004728-199703000-00024
  8. Rohlfing T, Zerfowski D, Beier J, Hosten N and Felix R: Reduction of metal in computed tommographies for the planning and simulation of radiation therapy. In: Lemke HU, Vannier MW, Inamura K, Farman AG ed. Proceedings of the 12th international symposium and exhibition, CAR '98. Amsterdam, Elsevier pp. 57-62, 1998.
  9. Wang G, Feri T and Vannier MW: Fast iterative algorithm for metal artifact reduction in X-ray CT. Acad Radiol Vol.7, No. 2, pp. 607-604, 2000. https://doi.org/10.1016/S1076-6332(00)80576-0
  10. Zhao S. Robertson DD, Wang G, Whiting B and Bae KT: X-ray CT metal artifact reduction using wavelets: an application for imaging total hip prostheses. IEEE Trans Med Imaging, Vol. 19, No. 2, pp. 1238-1247, 2000. https://doi.org/10.1109/42.897816
  11. Kawamata A, Ariji Y, Langlais 게. Three-dimensional computed tomography imaging in dentistry. Dent Clin North AM Vol. 44, No. 2, pp. 395-410, 2000.
  12. JF. Barrett, N Keat. Artifact in CT: recognition and avoidance. Radiographics Vol. 24, No. 6 pp. 1679-1691, 2004. https://doi.org/10.1148/rg.246045065