Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
권호 표지

Performance Comparison of Reconstruction Algorithms for Fan-Beam Computerized Tomography

Fan-Beam CT 영상 재구성 알고리즘 성능 비교

  • 이상철 (경희대학교 동서의학대학원 의료공학 전공) ;
  • 조민형 (경희대학교 동서의학대학원 의료공학 전공) ;
  • 이수열 (경희대학교 동서의학대학원 의료공학 전공)
  • Published : 2001.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we have compared the direct fan-beam reconstruction method with the rebinning method in terms of computation time and spatial resolution using computer simulation. As a result, the direct fan-beam method is superior to the rebinning method in the spatial resolution though the former needs longer computation time. However, if we adopt the quarter-detector-offset technique to improve the spatial resolution, the rebinning method outperforms the direct fan-beam method. The computation times have been evaluated using the fast algorithms optimized to reduce the number of interpolation calculations at the back-projection, and the spatial resolutions have been compared using the computer generated phantoms.

Keywords

References

  1. Foundations of Medical Imaging Z.H.Cho;J.P.Jones;M.Singh
  2. IEEE Trans. Nucl. Sci. NS v.21 Reconstructing interior head tissue from x-ray transmissions L.A.Shepp;B.F. Logan
  3. Reconstruction Using Divergent-Ray Shadowgraphs G.T. Herman;A.V. Lakshminarayanan;A. Naparstek
  4. Medical CT & ultrasound:Current Technology and Applications, American Association of Physicists in Medicine L.W. Goldman;J.B. Fowlkes
  5. J. of Computer Assisted Tomography v.5 Sampling Properties of Stationary and Half-Rotation Rings in Positron Emission Tomography K. Kouris;E.S. Garnett;G.T. Herman
  6. United State Patent 5,841,117 Apparatus and method for computed tomography scanning using halfscan reconstruction with asymmetric detector system S.N.Urchuk;C.C.Ruth;C.R.Crawford
  7. United State Patent 5,768,331 X-ray tomography system for and method of improving the quality of a scanned image B.M. Gordon;J.Dobbs
  8. Dep. Comput. Sci. State Univ. New York at Buffalo, Tech. Rep.92 Reconstruction from divergent ray data A.V. Lakshminarayanan
  9. Comput. Graphics Images Process v.10 The reconstruction of fan-beam data by filtering the back projection G.T. Gullberg
  10. Images reconstruction from projection G.T. Herman
  11. IEEE Transactions on Biomedical Engineering v.BME-28 no.2 Rapid Execution of Fan-Beam Image Reconstruction Algorithms Using Efficient Computational Techniques and Special Purpose Processors B.K. Gilbert;S.K. Kenue;R.A. Robb;A.Chu;A.H. Lent;E.E. Swartzlander