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Artificial intelligence CT helps evaluate the severity of COVID-19 patients: A retrospective study
人工智能 CT 有助于评估 COVID-19 患者的严重程度:一项回顾性研究
人工知能CTはCOVID-19患者の重症度を評価するのに役立ちます:後ろ向き研究
인공 지능 CT, COVID-19 환자의 중증도 평가에 도움: 후향적 연구
La TC con inteligencia artificial ayuda a evaluar la gravedad de los pacientes con COVID-19: un estudio retrospectivo
L'intelligence artificielle permet d'évaluer la gravité des patients atteints de COVID-19 : une étude rétrospective
КТ с искусственным интеллектом помогает оценить тяжесть состояния пациентов с COVID-19: ретроспективное исследование
Yi Han ¹, Su-cheng Mu ¹, Hai-dong Zhang ², Wei Wei ¹, Xing-yue Wu ¹, Chao-yuan Jin ¹, Guo-rong Gu 顾国嵘 ¹, Bao-jun Xie 谢宝君 ², Chao-yang Tong 童朝阳 ¹
¹ Department of Emergency Medicine, Zhongshan Hospital Fudan University, Shanghai 200032, China
中国 上海 复旦大学附属中山医院急诊科
² Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
中国 武汉 武汉大学人民医院放射科
World Journal of Emergency Medicine, 23 December 2021
Background

Computed tomography (CT) is a noninvasive imaging approach to assist the early diagnosis of pneumonia. However, coronavirus disease 2019 (COVID-19) shares similar imaging features with other types of pneumonia, which makes differential diagnosis problematic. Artificial intelligence (AI) has been proven successful in the medical imaging field, which has helped disease identification. However, whether AI can be used to identify the severity of COVID-19 is still underdetermined.

Methods

Data were extracted from 140 patients with confirmed COVID-19. The severity of COVID-19 patients (severe vs. non-severe) was defined at admission, according to American Thoracic Society (ATS) guidelines for community-acquired pneumonia (CAP). The AI-CT rating system constructed by Hangzhou YITU Healthcare Technology Co., Ltd. was used as the analysis tool to analyze chest CT images.

Results

A total of 117 diagnosed cases were enrolled, with 40 severe cases and 77 non-severe cases. Severe patients had more dyspnea symptoms on admission (12 vs. 3), higher acute physiology and chronic health evaluation (APACHE) II (9 vs. 4) and sequential organ failure assessment (SOFA) (3 vs. 1) scores, as well as higher CT semiquantitative rating scores (4 vs. 1) and AI-CT rating scores than non-severe patients (P<0.001). The AI-CT score was more predictive of the severity of COVID-19 (AUC=0.929), and ground-glass opacity (GGO) was more predictive of further intubation and mechanical ventilation (AUC=0.836). Furthermore, the CT semiquantitative score was linearly associated with the AI-CT rating system (Adj R2=75.5%, P<0.001).

Conclusion

AI technology could be used to evaluate disease severity in COVID-19 patients. Although it could not be considered an independent factor, there was no doubt that GGOs displayed more predictive value for further mechanical ventilation.
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