Journal of Digital Convergence (디지털융복합연구)

The Society of Digital Policy and Management (한국디지털정책학회)
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Distortion of Magnetic Resonance Imaging for Different Types of Orthodontic Material

치과 교정 물질에 따른 자기공명영상의 왜곡

  • 송현옥 (한서대학교 보건의료학과) ;
  • 임청환 (한서대학교 보건의료학과) ;
  • 이상호 (서남대학교 방사선학과) ;
  • 양오남 (한서대학교 보건의료학과) ;
  • 백창무 (한서대학교 보건의료학과) ;
  • 정홍량 (한서대학교 보건의료학과)
  • Received : 2014.01.02
  • Accepted : 2014.02.20
  • Published : 2014.02.28
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Abstract

To evaluate the effects of an artifact by metal material for orthodontics in Magnetic Resonance Image (MRI) examination, wires and brackets used in orthodontics were selected and compared. Using a head coil, a $T_2$-weighted image, $T_1$-weighted image and FLAIR image were obtained. With obtained images, the sizes of the artifacts were measured and compared using Image J Program. In the research, the material with the biggest artifact in the wires and brackets for orthodontics was stainless steel wire. In the future, selecting and developing metal for correction should be considered also in other fields along with the purpose of orthodontics.

자기공명영상검사에서 치과 교정용 금속 물질에 의한 인공물(Artifact)의 영향을 평가하기 위해 치과 교정에 사용되는 와이어(Wire)와 브라켓(Bracket)을 재질별로 선택하여 비교 연구하였다. 치과 금속을 넣은 사각 아크릴 용기는 $200{\times}135{\times}120mm$ 크기이며, 영상을 얻기 위하여 두부 코일을 사용하여 $T_2$강조영상, $T_1$강조영상, FLAIR영상을 획득하였다. 획득된 시퀀스별 자기공명영상의 인공물을 평가하기 위하여 Image J 프로그램을 사용하여 인공물의 면적을 측정 비교하였다. 연구에서 치과 교정용 와이어와 브라켓의 인공물이 가장 큰 물질은 Stainless steel로 나타났다. 현재까지는 치과 교정에서 교정을 목적에 두고 금속 물질을 선택하였으나 치과 교정용 금속은 환자의 기능과 미의 특성뿐 아니라 자기공명영상 인공물 생성 여부도 함께 고려해야 한다. 추후 교정용 금속의 선택 및 개발 발전은 치아교정의 목적과 더불어 다른 분야도 고려해야 할 것으로 사료된다.

Keywords

References

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