Moderator: Prof. Antoine Khalil, MD, PhD, FRCP, FESC
Head of the Radiology Department
Bichat–Claude Bernard University Hospital
Paris, France

Background information
Prof. Antoine Khalil MD, PhD is the Head of the Radiology Department at the Bichat–Claude Bernard University Hospital in Paris, since 2017. The Radiology Department of this hospital is mainly specialized in the treatment and diagnosis of lung and heart diseases. Bichat Hospital is one of the two reference centers of the Assistance publique - Hôpitaux de Paris (AP-HP) for the care of patients affected by COVID-19. Prof. Khalil is also a member of several national scientific societies, SFR (French Society of Radiology) and SIT (Thoracic Imaging Society).

Speaker: Dr. Russell Bull, BSc, MBBChir, MRCP, FRCR, FSCCT
Consultant Radiologist at the Radiology Department
Royal Bournemouth Hospital
Bournemouth, UK

Background information
Dr. Russell Bull has 15 years of radiology experience at consultant level and 11 years of experience in cardiac CT and cardiac MRI scanning. He is Level 3 accredited in cardiac CT by SCCT and BSCI.
Russell has been involved in the development of Canon ^PUREViSION optics combined with ultra-low, dose-efficient detector for CT in conjunction with Canon Medical. This allows patients to be scanned more safely using lower doses of radiation and IV contrast.
He currently supervises and reports over 500 cardiac CT and 500 cardiac MRI examinations per year.

Presentation: How COVID-19 has changed CT imaging in the UK
The advent of a highly contagious pathogen – SARS CoV-2 has accelerated this process due to the risks to the doctor and the value of CT in diagnosing and risk stratifying both COVID-19 as well as other unrelated conditions. Aerosol generating procedures have almost disappeared and have been replaced with CT alternatives. For example colonoscopy (to detect cancer) and trans-esophageal CT (to exclude left atrial thrombus) have been almost completely replaced by CT colonography and dual-phase cardiac CT respectively. Managing highly infectious patients with large clinical teams whilst wearing full PPE is a stressful environment for CT staff and is prone to increased scanning errors. Radiologists need to embrace rather than resist this change and to scan these patients safely and consistently with high throughput and very-low radiation doses. The scanners need to help us out with increased automation and built-in safety procedures.

Presentation: learning objectives

• With COVID-19 the use of CT in the UK has exploded.
• CT is now the ‘physical examination of the 21^st century’.
• COVID-19 has highlighted the need to redesign the CT departments to separate high-risk inpatients from low-risk outpatients.

Speaker: Dr. Monique Brink, MD, PhD
Radiologist at Department of Radiology and Nuclear Medicine
Radboud University Medical Center
Nijmegen, the Netherlands

Background information
Monique Brink is a radiologist at the Department of Imaging at the Radboud University Medical Centre in Nijmegen, the Netherlands. She has special interest in cardiothoracic radiology, computed tomography and emergency radiology. She is one of the authors of the COVID-19 Reporting and Data System (CO-RADS) classification scheme from the Dutch Society of Radiology released in 2020.

Presentation: CT in COVID-19 patients: my top 3 tips
The purpose of this presentation is to discuss the value of CT in diagnosing pulmonary involvement in COVID-19 disease. The application and the diagnostic value of the categorical CT assessment scheme for patients suspected of having COVID-19, the CO-RADS system, will be discussed. Potential pitfalls, tips and tricks on the use of CT for the diagnosis of COVID-19 will be shared.

Presentation: learning objective

• How to distinguish pulmonary COVID-19 features from abnormalities in other pulmonary infections
• How to use CT for diagnosis of COVID-19 in an appropriate setting

Speaker: Prof. Ernesto Di Cesare, MD
Head of Neuroradiology and Interventional Radiology Department
San Salvatore Hospital L'Aquila
L’Aquila, Abruzzo, Italy

Background information
Prof. Di Cesare is an expert in advanced diagnostics of Cardioradiology, MRI and CT, Echography and echocontrastography, Echocardiography.

He is the former President of the Cardioradiology Section of the Italian Society of Radiology (SIRM), a member of the Board of Directors of the Cardioradiology Section of SIRM and of the Italian Society of Cardiology of Sport.

As a founding member of European Society of Cardioradiology (ESCR), he held the position of Vice President and member of the Scientific Board. His research interests include myocardial perfusion, CT late enhancement and most recently COVID-19 treatment.

Presentation: Prognostic role of quantitative lung CT in COVID-19 patients
In this presentation, Prof. Di Cesare will focus on showing the results of a study aimed at investigating the clinical validity of quantitative chest CT measurements, performed with the CT Lung Density Analysis functionality of Canon’s Vitrea Advanced Visualization software.

During the COVID-19 pandemic in Italy, a specific patient workflow was created to assess the treatment path based on severity of the symptoms extracted from measurements depicted by Vitrea Advanced Visualization. Thresholds were created and based on the results, a decision is made if the patient will be given medicine or sent to the respiratory unit.

The criteria used are mean density, weight, and total percentage of normal, ground glass and consolidation areas. During the webinar Prof. Di Cesare will share how these quantitative measurements play a fundamental role in the assessment of the risk for COVID-19 patients.

Presentation: learning objectives

• COVID-19 Disease Quantitative Approach
• COVID-19 Patients Clinical Workflow
• Risk Stratification of COVID-19 Patients