Author: Yang, Shuyi; Zhang, Yunfei; Shen, Jie; Dai, Yongming; Ling, Yun; Lu, Hongzhou; Zhang, Rengyin; Ding, Xueting; Qi, Huali; Shi, Yuxin; Zhang, Zhiyong; Shan, Fei
Title: Clinical Potential of UTEâ€MRI for Assessing COVIDâ€19: Patient†and Lesionâ€Based Comparative Analysis Cord-id: 7ah22li0 Document date: 2020_6_3
ID: 7ah22li0
Snippet: BACKGROUND: Chest computed tomography (CT) has shown tremendous clinical potential for screening, diagnosis, and surveillance of COVIDâ€19. However, safety concerns are warranted due to repeated exposure of Xâ€rays over a short period of time. Recent advances in MRI suggested that ultrashort echo time MRI (UTEâ€MRI) was valuable for pulmonary applications. PURPOSE: To evaluate the effectiveness of UTEâ€MRI for assessing COVIDâ€19. STUDY TYPE: Prospective. POPULATION: In all, 23 patients wit
Document: BACKGROUND: Chest computed tomography (CT) has shown tremendous clinical potential for screening, diagnosis, and surveillance of COVIDâ€19. However, safety concerns are warranted due to repeated exposure of Xâ€rays over a short period of time. Recent advances in MRI suggested that ultrashort echo time MRI (UTEâ€MRI) was valuable for pulmonary applications. PURPOSE: To evaluate the effectiveness of UTEâ€MRI for assessing COVIDâ€19. STUDY TYPE: Prospective. POPULATION: In all, 23 patients with COVIDâ€19 and with an average interval of 2.81 days between hospital admission and image examination. FIELD STRENGTH/SEQUENCE: 3T; Respiratoryâ€gated threeâ€dimensional radial UTE pulse sequence. ASSESSMENT: Image quality score. Patient†and lesionâ€based interobserver and intermethod agreement for identifying the representative image findings of COVIDâ€19. STATISTICAL TESTS: Wilcoxonâ€rank sum test, Kendall's coefficient of concordance (Kendall's W), intraclass coefficients (ICCs), and weighted kappa statistics. RESULTS: There was no significant difference between the image quality of CT and UTEâ€MRI (CT vs. UTEâ€MRI: 4.3 ± 0.4 vs. 4.0 ± 0.5, P = 0.09). Moreover, both patient†and lesionâ€based interobserver agreement of CT and UTEâ€MRI for evaluating the image signs of COVIDâ€19 were determined as excellent (ICC: 0.939–1.000, P < 0.05; Kendall's W: 0.894–1.000, P < 0.05.). In addition, the intermethod agreement of two image modalities for assessing the representative findings of COVIDâ€19 including affected lobes, total severity score, ground glass opacities (GGO), consolidation, GGO with consolidation, the number of crazy paving pattern, and linear opacities, as well as pseudocavity were all determined as substantial or excellent (kappa: 0.649–1.000, P < 0.05; ICC: 0.913–1.000, P < 0.05). DATA CONCLUSION: Pulmonary MRI with UTE is valuable for assessing the representative image findings of COVIDâ€19 with a high concordance to CT. EVIDENCE LEVEL: 2 TECHNICAL EFFICACY STAGE: 3
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