Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Evaluation of artifacts around the breast expander according to magnetic field strength

자장의 세기에 따른 유방 확장기 주위의 인공물 평가

  • Received : 2020.08.23
  • Accepted : 2020.09.04
  • Published : 2020.09.30
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Abstract

The magnetic valve of the breast tissue expander generates imaging artifacts during MRI examination, so MRI examination is limited. To evaluate the effect of imaging artifacts on the diagnosis area for patients with breast tissue expander who need MRI examination. Imaging artifacts were measured using self-made phantoms and actual clinical conditions. Imaging artifacts were measured differently depending on the environment of 1.5 Tesla and 3.0 Tesla, and the effects of imaging artifacts were less in the C-spine and L-spine tests. If MRI due to breast cancer metastasis is absolutely necessary, head & neck examination and L-spine can be examined mainly at 1.5 Tesla, but some sequences may cause distortion due to image artifacts. In terms of safety, MRI scans of patients with breast tissue expanders can be performed conditionally at 1.5T, avoiding 3.0T.

유방조직확장기의 Magnetic Valve는 MRI 검사 시 영상 인공물이 발생하여 MRI 검사가 제한적이다. MRI 검사가 필요한 유방조직확장기 삽입 환자에 대해 영상 인공물이 진단영역에 미치는 영향을 평가한다. 자체 제작한 팬텀과 실제 임상 조건을 이용하여 영상 인공물 측정을 실시하였다. 영상 인공물은 1.5 Tesla와 3.0 Tesla 환경에 따라 상이하게 측정되었으며, C-spine, L-spine 검사 시 영상 인공물의 영향이 T-spine에 비해 상대적으로 적었다. 유방암 전이로 인한 MRI 검사가 꼭 필요한 경우 주로 1.5 Tesla에서 Head & Neck 검사와 L-spine 아래 부위를 검사 할 수 있으나 일부 시퀀스에서는 영상 인공물로 인한 왜곡이 발생할 수 있다. 유방조직확장기 삽입 환자의 MRI 검사는 안전성 측면에서는 3.0T는 피하고 1.5T에서 조건부로 가능하다.

Keywords

References

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