The comparison of chest X-ray and CT visibility according to size and lesion types in the patients with COVID-19

Authors : Emrah DOĞAN, Canan GÜRSOY, Özge ORAL TAPAN, Cenk ELİBOL, Turhan TOGAN, Semra DEMİRBİLEK

Pages : 1151-1155

Doi:10.32322/jhsm.1100231

View : 34 | Download : 13

Publication Date : 2022-07-20

Article Type : Research Paper

Abstract :Introduction: Chest X-ray insert ignore into journalissuearticles values(CXR); is one of the routinely used radiological examinations in COVID-19. However, the lesion detectability level of CXR is low. To date, to the best of our knowledge, the visualization quality of X-ray in COVID-19 has not been specifically evaluated in different lesions. Our study aims to determine the visualization quality of CXR in COVID-19 patients according to elementary lesions. Material and Method: 52 COVID-positive patients insert ignore into journalissuearticles values(26 Males and 26 Females);; 69,6346±15,14250 insert ignore into journalissuearticles values(32-89); years [mean±SD age insert ignore into journalissuearticles values(range);] were included in the study. 98 different elementary lesions of lung detected on CT were evaluated in six different groups insert ignore into journalissuearticles values(consolidation, indeterminate ground-glass opacity insert ignore into journalissuearticles values(IGGO);, dense GGO insert ignore into journalissuearticles values(DGGO);, reversed halo, parenchymal band and curvilinear band);. Lesions were compared with CXR taken on the same day. The detectability rates of the lesions on CXR were evaluated. Results: The mean sizes of CXR negative and CXR positive lesions for every group insert ignore into journalissuearticles values(consolidations, IGGO, DGGO, reversed halo sign, parenchymal band, curvilinear band); were respectively 1.36 cm -5.75 cm, 3.44 cm -5.50 cm, 2.25 cm -5.06 cm, 2.5cm -4.09 cm, N/A -3.14 cm and 1 cm -4.5 cm. According to Mann-Whitney U analysis, p values were found as insert ignore into journalissuearticles values(respectively in consolidations, IGGO, DGGO, reversed halo sign, and curvilinear band); 0.0001p, 0.145, 0.0001 p, 0.143 and 0.286. Given consolidation and DGGO groups, there was a statistically significant difference between non-visualized and visualized groups. According to ROC analysis, cut-off values were respectively 3 cm and 3.5 cm for consolidation and DGGO. Conclusion: Our study showed that consolidations smaller than 3 cm and DGGO smaller than 3.5 cm are difficult to visualize with CXR. Although there is no definite cut-off value in other elementary lesions, the visualization ratio of parenchymal bands and curvilinear bants on chest X-rays is quite high. IGGOs may not be detected even at higher dimensions. Reversed halos less than 3 cm can rarely be detected on CXR.
Keywords : COVID 19, Chest X Ray, computed tomography, thorax radiology