Journal of the Korean Society of Radiology (한국방사선학회논문지)

The Korean Society of Radiology (한국방사선학회)
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A Study on the Performance of 3D Printing Metal Filters and Shields in C-arm Neuroblocking

3D 프린팅으로 제작된 금속 필터와 차폐체의 C-arm 신경차단술 적용 성능 연구

  • Received : 2024.11.04
  • Accepted : 2024.11.30
  • Published : 2024.11.30
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Abstract

This study developed a metal filter and shielding device using FDM-based 3D printing to reduce the radiation exposure of the operator to the reproductive organs during C-arm-guided nerve blocking. Three filters made of copper (Cu), aluminum (Al), and nickel (Ni) were combined with a copper filament housing to create a composite shielding device. When the dose measurements were compared with and without the filter at 60, 80, and 100 kVp, Filter A 45%, Filter B 63%, and Filter C showed a high dose reduction rate of 74%. image quality was evaluated quantitatively Contrast to Noise Ratio (CNR), Signal to Noise Ratio (SNR) and qualitatively (Likert scale), and although there was a slight decrease due to the use of the filter, the clinical impact was minimal. The developed filter effectively reduces operator radiation exposure during C-arm-guided nerve blocking, and the C filter shows high practicality and dose reduction ability. The implementation of these filters is expected to contribute to enhancing the operator's safety and minimizing radiation exposure.

현대 의학에서 C-arm 장비를 활용한 신경차단술의 중요성이 증가하면서, 시술자의 생식선에 대한 1차선 피폭 위험이 우려되고 있다. 본 연구에서는 FDM 방식의 3D 프린팅 기술을 이용해 신경차단술 시 발생하는 1차선을 방어할 금속 필터와 차폐체를 제작하고, 필터 성능을 평가하였다. Cu, Al, Ni의 비율을 다르게 배합한 3개의 필터와 Copper 필라멘트로 제작한 하우징을 결합형 차폐체로 출력하였다. C-arm에서 필터를 사용했을 때 선량 감소 효과를 평가하기 위해 60, 80, 100 kVp에서 필터 유무에 따른 선량을 비교한 결과, A 필터는 45%, B 필터는 63%, C 필터는 74%의 높은 선량 감쇠율을 보였다. 모든 조사 조건에서 필터를 사용할 때 높은 선량 감쇠율이 관찰되었으며, 특히 C 필터가 가장 우수한 성능을 나타냈다. 영상품질 평가는 정량적(CNR, SNR) 및 정성적(리커트 척도)으로 진행하였으며, 필터 사용 시 영상 품질은 약간 저하되었으나 임상적 영향은 미미하였다. 본 연구에서 개발한 필터는 C-arm 장비를 사용하는 신경차단술 시술자의 불필요한 방사선 피폭을 효과적으로 줄일 수 있는 대안으로 제시되며. 그 중 C 필터는 높은 선량 감쇠율을 보였으며, 영상품질이 다소 저하되었으나 임상적 적용에 큰 영향을 주지 않아 실용적으로 적용 가능성이 높았다. 따라서 제작된 필터의 활용은 시술자의 안전성을 높이고, 방사선 노출을 최소화하는 데 기여할 것으로 사료된다.

Keywords

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