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논문 기본 정보

자료유형
학술저널
저자정보
이경수 (순천향대학교 의과대학 진단방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제28권 제6호
발행연도
1992.1
수록면
865 - 874 (10page)

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The authors evaluated high resolution computed tomographic (HRCT) findings of the isolated rabbit lungs with paraquat poisoning, and the findings were correlated with pathologic specimens. The purposes of this study are 1) to obtain the HRCT findings of the normal rabbit lung, 2) to find out if pulmonary pathology can be induced in rabbits by paraquat, and 3) to correlate the HRCT findings to those of pathology. Thirty rabbits were divided into three groups : group Iincluded four control rabbits; roup II included 16 rabbits given paraquat intraperitoneally (IP group); and group III included 10 rabbits given paraquat intravenously (IV group). The rabbits were sacrificed seven, 10 and 14 days after injection of various amount of paraquat, and then lungs were isolated for HRCT and pathologic studies. Gross and microscopic findings of the three groups of control and paraquat-injected rabbit lungs were correlated with HRCT findings. Pulmonary congestion, mild thickening of alveolar walls and septae, and multifocal micro-atelectasis were the main pathologic findings of the lungs in both groups of the rabbits. Pulmonary hemorrhage was noted in five (31%) of 16 rabbits of IP group and three (30%) of 10 IV group. Pulmonary edema was seen in one rabbit (6%) and IV (10%) group, respectively. There was no correlation between the amount of paraquat and frequency of the pulmonary pathology. Pulmonary fibrosis was seen at least one week after the paraquat injection. On HRCT, pulmonary hemorrhage and edema appeared as diffuse air-space consolidation and pulmonary fibrosis as linear or band-like opacities. However, minimal changes such as mild congestion, thickening of alveolar wall, and focal atelectasis were not clearly seen on HRCT. It is concluded that mild pulmonary congestion, mild thickening of alveolar walls and septae, and multifocal micro-atelectasis are the main pathologic features, while pulmonary hemorrhage and fibrosis are associated in the limited number of he paraquat lungs of the rabbits. The pathologic findings as well as the normal anatomy of the rabbit lung can be demonstrated on HRCT.

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