As the designated tertiary referral centre for infectious diseases in Hong Kong, our hospital received the city's first group of patients diagnosed with coronavirus disease 2019 . Herein, we studied the earliest patients admitted to our centre in order to clarify the typical radiological findings, particularly computed tomography (CT) findings, associated with COVID-19.Methods: From 22 January 2020 to 29 February 2020, 19 patients with confirmed COVID-19 underwent high-resolution or conventional CT scans of the thorax in our centre. The CT imaging findings of these patients with confirmed COVID-19 in Hong Kong were reviewed in this study.Results: Ground-glass opacities (GGO) with peripheral subpleural distribution were found in all patients (100%). No specific zonal predominance was observed. All lobes were involved in 16 (84.2%) patients, focal subsegmental consolidations were observed in 14 (73.7%) patients, and interlobular septal thickening was present in 12 (63.2%) patients. No mediastinal lymph node enlargement, centrilobular nodule, or pleural effusion was detected in any of the patients. Other imaging

CT has become the single sufficient and necessary radiographic test in the evaluation of patient with cranial trauma_ Recognition of the classic patterns and variations of traumatic CT abnormalities is challenging and rewarding aspects in head trauma.I n retrospective analysis of CT findings of 532 patients with head trauma, a wide spectrum of traumatic abnormalities were demonstrated : skull fracture , subgaleal hematoma, pneumocephalus , cerebral edema, cerebral contusion , epidural hematoma, subdural hem atom a, subarachnoid hemorrhage, intracerebral hematoma, intraventricular hematoma, brain infarction , hydrocephalus and porencephaly.