Feasibility study of chest CT Flash scan protocol in follow-up of severe coronavirus disease 2019_Chinese Journal of Respiratory and Critical Care Medicine

Authors：

 LONG Bin , HAN Rui , PENG Yong , YANG Yi , LIU Haifeng , ZHANG Wei , ZHANG Dongyou , BAI Yuhan

Department of Radiology, Wuhan No.1 Hospital, Wuhan, Hubei 430022, P. R. China;

Corresponding?author：

LONG Bin, Email: longbin774@163.com

Keywords：

Coronavirus disease 2019; Long pitch; X-ray computed tomography; Radiation dose

DOI：

10.7507/1671-6205.202012052

Video：

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Objective To explore the application value of Flash chest CT scan protocol in the follow-up of severe coronavirus disease 2019 (COVID-19). Methods Twenty-eight patients with severe COVID-19 who were admitted to this hospital from February 1, 2020 to March 15, 2020 were included. The follow-up CT examinations used conventional chest CT scan protocol and Flash scan protocol respectively, the image quality, signal-to-noise ratio (SNR) and effective dose of these two scan protocols were compared. Kappa test was used to evaluate the consistency of image quality scores of readers; Mann-Whitney test was used for image quality comparison; paired t test is performed for signal-to-noise ratio and effective dose comparison. Results The scores of the two readers had good consistency (Kappa=0.62, P<0.01 and Kappa=0.67, P<0.01). There was no statistically significant difference in image quality scores (Z=–0.275, P=0.783 and Z=–0.212, P=0.832). The signal-to-noise ratio of Flash protocol was statistically higher than that of conventional protocol (2.30±0.30 vs. 1.76±0.25, P<0.01). The effective dose of Flash protocol was 66.8% lower than that conventional protocol [(1.43±0.32) mSv vs. (4.31±1.36) mSv]. Conclusion Compared with conventional scan protocol, the Flash scan protocol does not require contact with COVID-19 patients, and effectively reduces the radiation dose and improves image quality of severe COVID-19 patients.

Citation： LONG Bin, HAN Rui, PENG Yong, YANG Yi, LIU Haifeng, ZHANG Wei, ZHANG Dongyou, BAI Yuhan. Feasibility study of chest CT Flash scan protocol in follow-up of severe coronavirus disease 2019. Chinese Journal of Respiratory and Critical Care Medicine, 2021, 20(12): 853-856. doi: 10.7507/1671-6205.202012052 Copy

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1. 國家衛生健康委員會. 《新型冠狀病毒肺炎診療方案(試行第七版)》(2020-03-03)[EB/OL]. http://www.nhc.gov.cn/yzygj/s7653p/202003/46c9294a7dfe4cef80dc7 f5912eb1989.shtml.
2. 劉海峰, 張東友, 陽義, 等. 新型冠狀病毒肺炎首次胸部高分辨率CT影像分析. 中華放射學雜志, 2020, 54(4): 292-295.
3. 柏玉涵, 楊健, 彭紅芬, 等. 初診普通型新型冠狀病毒肺炎的肺部高分辨率CT表現與動態觀察. 實用醫學雜志, 2020, 36(9): 1131-1134.
4. 唐光孝, 李春華, 劉雪艷, 等. 新型冠狀病毒肺炎的臨床與CT表現. 中國呼吸與危重監護雜志, 2020, 19(2): 161-165.
5. 劉卓, 張誠, 張卓璐, 等. 自由呼吸狀態下冠狀動脈CT造影可行性研究. 臨床放射學雜志, 2016, 35(6): 938-942.
6. 國家衛生健康委員會. 新型冠狀病毒肺炎診療方案(試行第八版)(2020-08-18)[EB/OL]. http://www.nhc.gov.cn/yzygj/s7653p/202008/0a7bdf12bd4b46e5bd28ca7 f9a7 f5e5a.shtml.
7. American Association of Medical Physicists (AAPM). The measurement, reporting and management of radiation dose in CT: Report of AAPM Task Group 23 of the Diagnostic Imaging Council CT Committee[EB/OL]. [2013-05-01]. http://www.aapm.org/pubs/reports/_96.pdf.
8. Doda Khera R, Nitiwarangkul C, Singh R, et al. Multiplatform, non-breath-hold fast scanning protocols: should we stop giving breath-hold instructions for routine chest CT? [Formula: see text]. Can Assoc Radiol J, 2021, 72(3): 505-511.
9. Padole AM, Sagar P, Westra SJ, et al. Development and validation of image quality scoring criteria (IQSC) for pediatric CT: a preliminary study. Insights Imaging, 2019, 10(1): 95.
10. 靳英輝, 蔡林, 程真順, 等. 新型冠狀病毒(2019-nCoV)感染的肺炎診療快速建議指南(標準版). 解放軍醫學雜志, 2020, 45(1): 1-20.
11. 雷子喬, 史河水, 梁波, 等. 新型冠狀病毒(2019-nCoV)感染的肺炎的影像學檢查與感染防控的工作方案. 臨床放射學雜志, 2020, 39(1): 1-6.
12. 史河水, 韓小雨, 樊艷青, 等. 新型冠狀病毒(2019-nCoV)感染的肺炎臨床特征及影像學表現. 臨床放射學雜志, 2020, 39(1): 8-11.
13. Han R, Huang L, Jiang H, et al. Early clinical and CT manifestations of coronavirus disease 2019 (COVID-19) pneumonia. Am J Roentgenol, 2020, 215(2): 338-343.
14. 周俊, 魏蓉. 雙低掃描技術結合雙源CT Flash Spiral模式在冠狀動脈成像中的應用. 臨床放射學雜志, 2016, 35(9): 1437-1440.
15. Huang C, Wang Y, Li X, et al. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. Lancet, 2020, 395(10223): 497-506.
16. 黃璐, 韓瑞, 于朋鑫, 等. 新型冠狀病毒肺炎不同臨床分型間CT和臨床表現的相關性研究. 中華放射學雜志, 2020, 54(4): 300-304.
17. 龍斌, 宋少輝, 劉怡, 等. SAFIRE算法對冠狀動脈鈣化積分的影響. 臨床放射學雜志, 2018, 37(7): 48-51.
18. 吳永娟, 畢純龍, 敏雍, 等. 雙源CT Flash模式雙低劑量掃描聯合SAFIRE在冠狀動脈成像中的可行性研究. 臨床放射學雜志, 2016, 35(1): 142-146.
19. 唐利軍, 周文珊, 劉盛, 等. 新型冠狀病毒肺炎放射診斷檢查場所的感染控制與輻射安全監測和分析. 中華放射醫學與防護雜志, 2020, 40(4): 253-258.
20. 陽義, 彭紅芬, 梅海清, 等. 放射科新型冠狀病毒肺炎操作管理流程實戰方案. 中國中西醫結合影像學雜志, 2020, 18(2): 113-115.

Chinese Journal of Respiratory and Critical Care Medicine

Feasibility study of chest CT Flash scan protocol in follow-up of severe coronavirus disease 2019

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