Wu Ruodai, Guan Wei, Gao Zhenhua, Wu Nashan, Lv Yungang, Liu Yumeng, Mi Rui, Xu Junqing
Department of Radiology, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, China.
Department of Nuclear Medicine, the First People's Hospital of Foshan, Foshan, China.
Quant Imaging Med Surg. 2020 Jul;10(7):1551-1558. doi: 10.21037/qims-20-688.
To investigate the distribution of CT features and also to introduce a novel described CT feature of coronavirus disease-19 (COVID-19) pneumonia.
A series of radiologic signs in 11 COVID-19 patients were summarized and made morphometric analysis.
A special sign termed as "the arch bridge sign" owing to its morphological mimicking an arch bridge was firstly introduced. Statistical analyze showed that the subpleural area is the priority distribution location (14/14) and the sign inclined to perform in those patients in a relatively early stage (6/8) and with moderate clinical severity (8/8). Segment VI in lower lobe involved most (6/14). In this retrospective study, other characteristic radiologic signs of COVID-19 pneumonia were analyzed synchronously. A series of radiologic signs were identified in bilateral lungs with a bias towards segment VI, I + II and X. Segment VI had the largest number of each sign. Ground-glass opacities (GGOs), subpleural distribution pattern and vessels dilatation were the top three most common signs among them.
The recognition of the arch bridge sign may benefit patient care by earlier definitive diagnosis of COVID-19 pneumonia. The lesions of COVID-19 pneumonia distributed mainly in the back-lung segments, which characteristic may light new ideas in clinical treatment and nursing strategy.
探讨新型冠状病毒肺炎（COVID-19）的CT特征分布，并介绍一种新描述的CT特征。
总结11例COVID-19患者的一系列影像学征象并进行形态计量分析。
首次引入一种因其形态类似拱桥而被称为“拱桥征”的特殊征象。统计分析显示，胸膜下区域是优先分布位置（14/14），该征象倾向于在相对早期（6/8）和临床严重程度为中度（8/8）的患者中出现。下叶VI段受累最多（6/14）。在这项回顾性研究中，同步分析了COVID-19肺炎的其他特征性影像学征象。在双侧肺中发现了一系列影像学征象，以VI段、I+II段和X段为著。VI段每种征象的数量最多。磨玻璃影（GGO）、胸膜下分布模式和血管扩张是其中最常见的三大征象。
识别拱桥征可能有助于通过早期明确诊断COVID-19肺炎来改善患者护理。COVID-19肺炎病变主要分布在肺后段，这一特征可能为临床治疗和护理策略提供新思路。
