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논문 기본 정보

자료유형
학술저널
저자정보
양상규 (국립의료원 진단방사선과)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제37권 제2호
발행연도
1997.1
수록면
249 - 253 (5page)

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Purpose : To evaluate the changes and normal ranges of the artery-bronchus ratio(ABR) during respirationMaterials and Methods : We analyzed HRCT of 10healthy adults. The HRCT findings of ten healthy adults were analysed CT scanning was performed with 1mm collimation at 3mm intervals during full inspiration and full expiration, with a range during inspiration from 2cm to 4cm above the carina and from 4cm above to 2cm below the right hemidiaphragm. The range during expiration was from 1cm to 3cm above the carina and from 4cm above to 2cm below the right hemidiaphragm. ABiR (defined as the diameter of pulmonary artery divided by the inner diameter of the bronchus) and ABoR (defined as the diameter of pulmonary artery divided by the outer diameter of the bronchus) and BLR (defined as the inner diameter of the bronchus divided by the outer diameter of the bronchus) were measured on the display console.Results : The mean inner diameter of the bronchi was 2.04$\pm$0.73mm during inspiration and 1.68$\pm$0.51mm during expiration, while the mean diameter of the arteries was 3.95$\pm$1.03mm during inspiration and 4.37$\pm$1.09mm during expiration. The diameters of the bronchi were thus seen to increase during inspiration, and the diameters of the pulmonary arteries, to decrease. The mean thickness of the bronchial wall 1.07$\pm$0.19mm during inspiration and 1.06$\pm$0.24mm during expiration; thus, no change in thickness was seen during respiration (p<0.05). Mean ABiR was 2.01$\pm$0.60 (rang 1.15-4.58) during inspiration and 2.59$\pm$0.74(range 1.16-4.9) during expiration, and in all cases the inner diameter of the bronchus was less than that of the accompanying pulmonary artery. Mean ABoR was 0.91$\pm$0.19 during inspiration and 1.09$\pm$0.22 during expiration. while for BLR, the corresponding fingures were 0.46$\pm$0.06, and 0.44$\pm$0.09.Conclusion : HRCT is a useful tool for evaluating changes in the pulmonary arteries and bronchi during respiration.

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