Aim of the work: this study aimed to assess the role of ECG gated multidetector computed tomography in detection and characterization of congenital heart diseases. Patients and method: this study was carried out in the Radiology Department of Ain Shams University Hospitals. A total of 30 patients presented with clinically/echocardiographically known to have congenital heart disease. They were 17(56.7%) females and 13 (43.3%) males. Their age was ranged from 3 days-18 year old. Results: Regarding the cardiac abnormalities, we found good agreement between Echo and ECG gated MDCT as regard cardiac abnormalities with kappa value measuring 0.771. Regarding great vessels anomalies, we found overall good agreement between Echo and MDCT where k measuring 0.790. As regard extracardiac findings, lung changes that were seen in MDCT only in form of lung consolidation in three cases (10%) and one case of unilateral lung hypoplasia (3.3 %). Conclusion: ECG gated MDCT is considered as an essential non-invasive diagnostic tool for the evaluation of congenital cardiac and extra cardiac great vessels. MDCT is complementary to the cardiac echocardiography especially in complex heart abnormalities.

Background: For early diagnosis of pulmonary abnormalities in COVID-19 patients, a CT scan of the chest is a main and straightforward diagnostic approach. A semi-quantitative approach based on both visual and colour coded images aids in the early diagnosis of COVID-19 lung abnormalities, allowing for better disease detection and infection control. Aim of Study:The purpose of this study is to confirm the value of color-coded lung imaging in improving the detection of faint ground glass opacities, which were the only symptom in COVID-19 patients who were diagnosed early.Patients and Methods: This cross section study included 50 patients (36 males, 14 females) ranging in age from 25 to 65 years (mean age of 34.2 years) who were confirmed to be infected with SARS-CoV-2 using an RT-PCR test and were referred to the Cairo University Faculty of Medicine's Radiology department for a chest CT scan.Results: From mid-January to April 15, 2021, we studied 50 patients in Cairo, Egypt, who had positive RT-PCR tests and pulmonary manifestations. Fifty patients (100%) had faint ground glass opacities that were detected by both visual and colour coded images, while seven patients (14%) had only colour coded images that were confirmed by CT HU assessment. Conclusion:The application of both visual and color coded images improve and augment the early detection of faint ground glass opacities seen in early COVID-19 affection.