Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Modified Fermi Filter Design to Improve the MR Image of Knee in the Rheumatoid Arthritis Patient

류마티스 관절염 환자의 무릎 MR 영상 개선을 위한 변형된 Fermi 필터 설계

  • Kim, Dong-Hyun (Department of Diagnostic Radiology, Pusan National University Hospital) ;
  • Ye, Soo-Young (Department of Mechatronics Engineering, Dongseo University)
  • 김동현 (부산대학교병원 영상의학과) ;
  • 예수영 (동서대학교 메카트로닉스공학과)
  • Received : 2010.08.17
  • Accepted : 2010.09.20
  • Published : 2010.10.01
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Abstract

In this study, we intended to design the optimal Fermi filter to apply the k-space date that is knee image of the rheumatoid arthritis patient acquired from the MRI (magnetic resonance imaging) instrument. After deciding the suitable coefficient for the Fermi filter, the results were compared with modified Fermi filter and inverse Chebyshev filter, Chebyshev filter, Elliptic filter and Butterworth filter. Firstly, in comparison to the results, the radiologist confirmed that modified Fermi filter was best decision for boundary of the rheumatoid arthritis images. The number of the black voxels of the histogram showed the quantity of the results. At the proposed filter images, numbers of the blacks voxels were statistically decreased. That meant voxels only appeared the black color were changed to others voxels color. Because the number of the total voxels was fixed, the area appeared block color could be effected to the other areas. If the modified Fermi filter were used for rheumatoid arthritis patient, the result will be better than other filters.

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References

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