Hyperoxia-induced diffuse alveolar damage in pigs:: Correlation between thin-section CT and histopathologic findings

被引:41
作者
Ichikado, K
Suga, M
Gushima, Y
Johkoh, T
Iyonaga, K
Yokoyama, T
Honda, O
Shigeto, Y
Tomiguchi, S
Takahashi, M
Itoh, H
Ikezoe, J
Müller, NL
Ando, M
机构
[1] Kumamoto Univ, Sch Med, Dept Internal Med 1, Kumamoto 8600811, Japan
[2] Kumamoto Univ, Sch Med, Dept Radiol, Kumamoto 8600811, Japan
[3] Osaka Univ, Sch Med, Dept Radiol, Osaka 553, Japan
[4] Osaka Univ, Sch Med, Dept Internal Med, Osaka 553, Japan
[5] Kyoto Univ Hosp Shogoin, Dept Radiol, Kyoto, Japan
[6] Ehime Univ, Sch Med, Dept Radiol, Matsuyama, Ehime 790, Japan
[7] Vancouver Hosp & Hlth Sci Ctr, Dept Radiol, Vancouver, BC V5Z 1M9, Canada
[8] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
关键词
animals; computed tomography (CT); thin-section; lung; CT; diseases; respiratory distress syndrome; adult; (ARDS);
D O I
10.1148/radiology.216.2.r00jl05531
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
PURPOSE: To determine whether lung abnormalities at thin-section computed tomography (CT) in experimental hyperoxic lung injury correlate with the pathologic phases of diffuse alveolar damage (DAD). MATERIALS AND METHODS: Eighteen juvenile pigs were exposed to more than 80% oxygen-for 24, 48, 72, 96, or 120 hours-or room air in sealed cages. Their removed lungs were inflated with air infused through the trachea and examined with thin-section CT. Two independent observers, without knowledge of the exposure times, compared 63 areas selected on the CT scans with the corresponding pathologic and histologic findings, which were evaluated independently by two pathologists. RESULTS: CT findings correlated well with histologic findings (p = 0.86, P < .001), which corresponded to the pathologic phases of DAD. All areas of normal CT attenuation, eight of nine spared regions within areas of opacity, and two of 15 areas of ground-glass opacity corresponded to the early exudative pathologic phase of DAD. All areas that showed traction bronchiolectasis at CT corresponded to the early proliferative pathologic phase. There was good observer agreement regarding the interpretation of CT findings (kappa statistic, > 0.60) and histologic results (greater than or equal to 0.70). CONCLUSION: Thin-section CT findings reflect the pathologic phases of DAD, although the early exudative phase cannot be specifically depicted by thin-section CT. Traction bronchiolectasis on a CT scan suggests progression to the proliferative phase.
引用
收藏
页码:531 / 538
页数:8
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