정상견에서 다중채널 컴퓨터단층촬영술을 통한 폐용적과 밀도의 평가

Evaluation of Total Lung Volume and Density using Multi-Detector Computed Tomography in Normal Dogs

  • 최호정 (충남대학교 수의과대학) ;
  • 이기자 (오비히로 농과대학 임상수의학부) ;
  • 최수영 (충남대학교 수의과대학) ;
  • 이정우 (충남대학교 수의과대학) ;
  • 한우석 (건양대학교 의과대학) ;
  • 이인 (충남대학교 수의과대학) ;
  • 권영항 (충남대학교 수의과대학) ;
  • 이영원 (충남대학교 수의과대학)
  • Choi, Ho-Jung (College of Veterinary Medicine, Chungnam National University) ;
  • Lee, Ki-Ja (Department of Clinical Veterinary Science, Obihiro University of Agriculture and Veterinary Medicine) ;
  • Choi, Soo-Young (College of Veterinary Medicine, Chungnam National University) ;
  • Lee, Jung-Woo (College of Veterinary Medicine, Chungnam National University) ;
  • Han, Woo-Sok (College of Medicine, Konyang University) ;
  • Lee, In (College of Veterinary Medicine, Chungnam National University) ;
  • Kwon, Young-Hang (College of Veterinary Medicine, Chungnam National University) ;
  • Lee, Young-Won (College of Veterinary Medicine, Chungnam National University)
  • 심사 : 2011.09.19
  • 발행 : 2011.10.31

초록

개에서 컴퓨터단층촬영술을 이용하여, 촬영 자세에 따른 정상 폐의 용적과 밀도를 정량적으로 평가하였다. 각각 6 마리의 페키니즈견과 말티즈견에서 컴퓨터단층촬영을 실시하면서 자세를 앙와위, 좌측과 우측 횡와위, 그리고 흉와위로 변경하였다. 컴퓨터단층촬영을 실시하는 동안 일정한 정도의 양압환기를 실시하였다. 폐용적과 밀도는 CT 영상의 삼차원 재구성 방식을 통해 측정하였고, 전체 폐용적 및 밀도, 좌측과 우측 폐의 용적과 밀도를 각각 측정하였다. 삼차원 재구성 결과 폐의 모양은 두 품종견에서 매우 다르게 나타났다. 폐용적과 밀도는 촬영 자세를 변경하는 동안 두 품종견에서 모두 유의적인 변화를 보이지 않았다. 오른쪽 폐용적이 왼쪽 폐에 비해 유의적으로 약 $66.91{\pm}25.1$ ml 만큼 컸다. 페키니즈 견과 말티즈 견의 체중 차이가 유의적이었으며, 체중과 흉와위로 촬영한 폐용적 간에 선형관계가 관찰되었다. 좌우측 횡와위 촬영에서 중력의 영향을 받는 쪽의 폐는 반대쪽 폐에 비해 밀도는 높고 용적은 감소되었다. 컴퓨터단층촬영으로 측정한 전체 폐용적은 폐밀도와 관련이 있었으며, 폐밀도가 정상 폐용적을 유추하는데 유용하게 사용될 것으로 생각된다.

This study was performed to quantitatively assess the normal lung volume and density according to the position by multi-detector computed tomography (MDCT) in dogs. Helical CT of the thorax was performed on 4 different positions with dorsal, left lateral, right lateral and ventral recumbency in 6 Pekingese and 6 Maltese dogs. During CT scanning, dogs were kept hyperventilated. Through the 3-dimensional reconstruction of CT images, the lung parameters were measured as the volume and density of the left, right including accessory lobe, and total lung. 3D images represented the different lung shape between Pekingese and Maltese dogs. Their difference of total lung volume and total lung density was not significant on the each position in both breeds. Right lung volume was significantly higher than left. The difference of left and right volume was $66.91{\pm}25.1$ ml. Linear relationship was shown between body weight and lung volume of ventral recumbency position. The dependent lung had higher density and lower volume than nondependent lung in both breed dogs. The volume of nondependent lung was not changed compared with the volume on ventral or dorsal recumbency. The total lung volume measured with MDCT is correlated with the lung density, and the lung density is useful to predict the normal total lung volume.

키워드

참고문헌

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