From the Department of Radiology, Clínica Alemana de Santiago, Facultad de Medicina Clinica Alemana- Universidad del Desarrollo, Santiago, Chile.
J Comput Assist Tomogr. 2021;45(3):485-489. doi: 10.1097/RCT.0000000000001162.
The aim of this study was to study interreader agreement of the RSNA-STR-ACR (Radiological Society of North America/Society of Thoracic Radiology/American College of Radiology) consensus statement on reporting chest computed tomography (CT) findings related to COVID-19 on a sample of consecutive patients confirmed with reverse transcriptase-polymerase chain reaction (RT-PCR) for severe acute respiratory syndrome coronavirus 2.
This institutional review board-approved retrospective study included 240 cases with a mean age of 47.6 ± 15.9 years, ranging from 20 to 90 years, who had a chest CT and RT-PCR performed. Computed tomography images were independently analyzed by 2 thoracic radiologists to identify patterns defined by the RSNA-STR-ACR consensus statement, and concordance was determined with weighted κ tests. Also, CT findings and CT severity scores were tabulated and compared.
Of the 240 cases, 118 had findings on CT. The most frequent on the RT-PCR-positive group were areas of ground-glass opacities (80.5%), crazy-paving pattern (32.2%), and rounded pseudonodular ground-glass opacities (22.9%). Regarding the CT patterns, the most frequent in the RT-PCR-positive group was typical in 75.9%, followed by negative in 17.1%. The interreader agreement was 0.90 (95% confidence interval, 0.80-0.96) in this group. The CT severity score had a mean difference of -0.07 (95% confidence interval, -0.48 to 0.34) among the readers, showing no significant differences regarding visual estimation.
The RSNA-STR-ACR consensus statement on reporting chest CT patterns for COVID-19 presents a high interreader agreement, with the typical pattern being more frequently associated with RT-PCR-positive examinations.
本研究旨在研究放射学学会北美放射学会/胸放射学会/美国放射学院（RSNA-STR-ACR）关于报告与 COVID-19 相关的胸部计算机断层扫描（CT）发现的共识声明在连续接受逆转录酶-聚合酶链反应（RT-PCR）检测严重急性呼吸综合征冠状病毒 2 检测的患者样本中的读者间一致性。
本机构审查委员会批准的回顾性研究包括 240 例患者，平均年龄为 47.6±15.9 岁，年龄范围为 20 至 90 岁，这些患者均进行了胸部 CT 和 RT-PCR 检查。由 2 名胸部放射科医生独立分析 CT 图像，以确定 RSNA-STR-ACR 共识声明定义的模式，并通过加权κ检验确定一致性。还列出并比较了 CT 发现和 CT 严重程度评分。
在 240 例患者中，有 118 例 CT 有发现。在 RT-PCR 阳性组中最常见的是磨玻璃影（80.5%）、铺路石样模式（32.2%）和圆形假结节性磨玻璃影（22.9%）。关于 CT 模式，在 RT-PCR 阳性组中最常见的是典型模式（75.9%），其次是阴性模式（17.1%）。在该组中，读者间的一致性为 0.90（95%置信区间，0.80-0.96）。在读者之间，CT 严重程度评分的平均差异为-0.07（95%置信区间，-0.48 至 0.34），表明在视觉估计方面没有显著差异。
RSNA-STR-ACR 关于报告 COVID-19 胸部 CT 模式的共识声明具有较高的读者间一致性，其中典型模式与 RT-PCR 阳性检查更相关。
