Usui Akihito, Kawasumi Yusuke, Funayama Masato, Saito Haruo
Department of Diagnostic Image Analysis, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai, 980-8575, Japan,
Jpn J Radiol. 2014 Jul;32(7):414-20. doi: 10.1007/s11604-014-0326-9. Epub 2014 May 14.
We sought to compare postmortem chest computed tomography (CT) features of drowning cases with autopsy findings, and to classify these features.
We performed a retrospective analysis of high-resolution and multi-planar reconstruction chest CT images of drowning in 92 adults (54 men, 38 women; mean age 65.4 years) scanned before forensic autopsy. The average lung CT number was calculated from whole-lung images reconstructed on a 3D workstation. The statistically significant differences of CT numbers were assessed with an alpha level of 0.05.
Postmortem chest CT image patterns were classified into six types: the two main types were ground-glass opacities with thickened pulmonary interstitium (n = 31), and a centrilobular distribution of ill-defined nodules along the airways (n = 38). Some cases were mixed type (n = 10). There were significant differences in CT numbers between each type. The remaining three types were consolidation (n = 5), emphysema and/or fibrosis (n = 4), and unclassifiable (n = 4).
Postmortem CT images of drowning cases can be classified into three major types with a few exceptions.
我们试图比较溺水病例的尸检胸部计算机断层扫描（CT）特征与尸检结果，并对这些特征进行分类。
我们对92名成年人（54名男性，38名女性；平均年龄65.4岁）溺水后的高分辨率和多平面重建胸部CT图像进行了回顾性分析，这些图像是在法医尸检前扫描的。从三维工作站重建的全肺图像中计算平均肺CT值。采用0.05的α水平评估CT值的统计学显著差异。
尸检胸部CT图像模式分为六种类型：两种主要类型为肺间质增厚的磨玻璃影（n = 31），以及沿气道的小叶中心分布的边界不清的结节（n = 38）。一些病例为混合型（n = 10）。各类型之间的CT值存在显著差异。其余三种类型为实变（n = 5）、肺气肿和/或纤维化（n = 4）以及无法分类（n = 4）。
溺水病例的尸检CT图像可分为三种主要类型，少数例外。
