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Diagnostic performance of chest CT to differentiate COVID-19 pneumonia in non-high-epidemic area in Japan.
Jpn J Radiol. 2020 May; 38(5):400-406.JJ

Abstract

PURPOSE

To evaluate the diagnostic performance of chest CT to differentiate coronavirus disease 2019 (COVID-19) pneumonia in non-high-epidemic area in Japan.

MATERIALS AND METHODS

This retrospective study included 21 patients clinically suspected COVID-19 pneumonia and underwent chest CT more than 3 days after the symptom onset: six patients confirmed COVID-19 pneumonia by real-time reverse-transcription polymerase chain reaction (RT-PCR) and 15 patients proved uninfected. Using a Likert scale and its receiver operating characteristic curve analysis, two radiologists (R1/R2) evaluated the diagnostic performance of the five CT criteria: (1) ground glass opacity (GGO)-predominant lesions, (2) GGO- and peripheral-predominant lesions, (3) bilateral GGO-predominant lesions; (4) bilateral GGO- and peripheral-predominant lesions, and (5) bilateral GGO- and peripheral-predominant lesions without nodules, airway abnormalities, pleural effusion, and mediastinal lymphadenopathy.

RESULTS

All patients confirmed COVID-19 pneumonia had bilateral GGO- and peripheral-predominant lesions without airway abnormalities, mediastinal lymphadenopathy, and pleural effusion. The five CT criteria showed moderate to excellent diagnostic performance with area under the curves (AUCs) ranging 0.77-0.88 for R1 and 0.78-0.92 for R2. The criterion (e) showed the highest AUC.

CONCLUSION

Chest CT would play a supplemental role to differentiate COVID-19 pneumonia from other respiratory diseases presenting with similar symptoms in a clinical setting.

Authors+Show Affiliations

Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan. yukihimoto@gmail.com.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Infectious Diseases, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Infectious Diseases, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Infectious Diseases, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.Department of Diagnostic Radiology, Japanese Red Cross Wakayama Medical Center, Wakayama, 6408558, Japan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32232648

Citation

Himoto, Yuki, et al. "Diagnostic Performance of Chest CT to Differentiate COVID-19 Pneumonia in Non-high-epidemic Area in Japan." Japanese Journal of Radiology, vol. 38, no. 5, 2020, pp. 400-406.
Himoto Y, Sakata A, Kirita M, et al. Diagnostic performance of chest CT to differentiate COVID-19 pneumonia in non-high-epidemic area in Japan. Jpn J Radiol. 2020;38(5):400-406.
Himoto, Y., Sakata, A., Kirita, M., Hiroi, T., Kobayashi, K. I., Kubo, K., Kim, H., Nishimoto, A., Maeda, C., Kawamura, A., Komiya, N., & Umeoka, S. (2020). Diagnostic performance of chest CT to differentiate COVID-19 pneumonia in non-high-epidemic area in Japan. Japanese Journal of Radiology, 38(5), 400-406. https://doi.org/10.1007/s11604-020-00958-w
Himoto Y, et al. Diagnostic Performance of Chest CT to Differentiate COVID-19 Pneumonia in Non-high-epidemic Area in Japan. Jpn J Radiol. 2020;38(5):400-406. PubMed PMID: 32232648.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diagnostic performance of chest CT to differentiate COVID-19 pneumonia in non-high-epidemic area in Japan. AU - Himoto,Yuki, AU - Sakata,Akihiko, AU - Kirita,Mitsuhiro, AU - Hiroi,Takashi, AU - Kobayashi,Ken-Ichiro, AU - Kubo,Kenji, AU - Kim,Hyunjin, AU - Nishimoto,Azusa, AU - Maeda,Chikara, AU - Kawamura,Akira, AU - Komiya,Nobuhiro, AU - Umeoka,Shigeaki, Y1 - 2020/03/30/ PY - 2020/03/13/received PY - 2020/03/18/accepted PY - 2020/4/2/pubmed PY - 2020/5/1/medline PY - 2020/4/2/entrez KW - COVID-19 KW - CT criteria KW - Chest CT KW - Diagnostic performance SP - 400 EP - 406 JF - Japanese journal of radiology JO - Jpn J Radiol VL - 38 IS - 5 N2 - PURPOSE: To evaluate the diagnostic performance of chest CT to differentiate coronavirus disease 2019 (COVID-19) pneumonia in non-high-epidemic area in Japan. MATERIALS AND METHODS: This retrospective study included 21 patients clinically suspected COVID-19 pneumonia and underwent chest CT more than 3 days after the symptom onset: six patients confirmed COVID-19 pneumonia by real-time reverse-transcription polymerase chain reaction (RT-PCR) and 15 patients proved uninfected. Using a Likert scale and its receiver operating characteristic curve analysis, two radiologists (R1/R2) evaluated the diagnostic performance of the five CT criteria: (1) ground glass opacity (GGO)-predominant lesions, (2) GGO- and peripheral-predominant lesions, (3) bilateral GGO-predominant lesions; (4) bilateral GGO- and peripheral-predominant lesions, and (5) bilateral GGO- and peripheral-predominant lesions without nodules, airway abnormalities, pleural effusion, and mediastinal lymphadenopathy. RESULTS: All patients confirmed COVID-19 pneumonia had bilateral GGO- and peripheral-predominant lesions without airway abnormalities, mediastinal lymphadenopathy, and pleural effusion. The five CT criteria showed moderate to excellent diagnostic performance with area under the curves (AUCs) ranging 0.77-0.88 for R1 and 0.78-0.92 for R2. The criterion (e) showed the highest AUC. CONCLUSION: Chest CT would play a supplemental role to differentiate COVID-19 pneumonia from other respiratory diseases presenting with similar symptoms in a clinical setting. SN - 1867-108X UR - https://www.unboundmedicine.com/medline/citation/32232648/Diagnostic_performance_of_chest_CT_to_differentiate_COVID_19_pneumonia_in_non_high_epidemic_area_in_Japan_ L2 - https://dx.doi.org/10.1007/s11604-020-00958-w DB - PRIME DP - Unbound Medicine ER -