A practical approach to imaging characteristics and standardized reporting of COVID-19:A radiologic review

Novel coronavirus (2019-nCoV),also known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2),is a pathogen that has caused a rapidly spreading pandemic all over the world.The primary mean of transmission is inhalation with a predilection for respiratory system involvement,especially in the distal airways.The disease that arises from this novel coronavirus is named coronavirus disease 2019 (COVID-19).COVID-19 may have a rapid and devastating course in some cases leading to severe complications and death.Radiological imaging methods have an invaluable role in diagnosis,follow-up,and treatment.In this review,radiological imaging findings of COVID-19 have been systematically reviewed based on the published literature so far.Radiologic reporting templates are also emphasized from a different point of view,considering specific distinctive patterns of involvement.     

Imaging volumes during COVID-19: A Victorian health service experience

BACKGROUNDThe World Health Organisation declared the coronavirus disease 2019 (COVID-19) a pandemic on March 11, 2020. While globally, the relative caseload has been high, Australia’s has been relatively low. During the pandemic, radiology services have seen significant changes in workflow across modalities and a reduction in imaging volumes. AIMTo investigate differences in modality imaging volumes during the COVID-19 pandemic across a large Victorian public health network.METHODSA retrospective analysis from January 2019 to December 2020 compared imaging volumes across two periods corresponding to the pandemic’s first and second waves. Weekly volumes across patient class, modality and mobile imaging were summed for periods: wave 1 (weeks 11 to 16 for 2019; weeks 63 to 68 for 2020) and wave 2 (weeks 28 to 43 for 2019; weeks 80 to 95 for 2020). Microsoft Power Business Intelligence linked to the radiology information system was used to mine all completed examinations.RESULTSSummed weekly data during the pandemic’s first wave showed the greatest decrease of 29.8% in adult outpatient imaging volumes and 46.3% in paediatric emergency department imaging volumes. Adult nuclear medicine demonstrated the greatest decrease of 37.1% for the same period. Paediatric nuclear medicine showed the greatest decrease of 47.8%, with angiography increasing by 50%. The pandemic’s second wave demonstrated the greatest decrease of 23.5% in adult outpatient imaging volumes, with an increase of 18.2% in inpatient imaging volumes. The greatest decrease was 28.5% in paediatric emergency department imaging volumes. Nuclear medicine showed the greatest decrease of 37.1% for the same period. Paediatric nuclear medicine showed the greatest decrease of 36.7%. Mobile imaging utilisation increased between 57.8% and 135.1% during the first and second waves. A strong correlation was observed between mobile and non-mobile imaging in the emergency setting (Spearman’s correlation coefficient = -0.743, P = 0.000). No correlation was observed in the inpatient setting (Spearman’s correlation coefficient = -0.059, P = 0.554).CONCLUSIONNuclear medicine was most impacted, while computed tomography and angiography were the least affected by the pandemic. The impact was less during the pandemic’s second wave. Mobile imaging shows continuous growth during both waves.     

Imaging spectrum of abdominal manifestations of COVID-19

Coronavirus disease 2019 (COVID-19) has posed a serious threat to global public health with its rapid spread, high fatality, and severe burden on health care providers all over the world. Although COVID-19 has been established as a respiratory tract infection, it can manifest with gastrointestinal symptoms as a consequence of direct infection by the virus or due to inflammation-mediated cytotoxicity. It has been observed that COVID-19 patients presenting with gastrointestinal symptoms tend to progress to a severe form of disease with increased morbidity and mortality, thus indicating the need for timely management. COVID-19 manifests with a wide spectrum of radiologic findings on gastrointestinal tract imaging, encompassing bowel abnormalities, hepato-biliary and pancreatic involvement, vascular occlusion, and solid organ infarction. Early recognition of these imaging features can facilitate timely treatment of COVID-19 associated gastrointestinal tract complications and may prompt the diagnosis of COVID-19 in patients with atypical disease manifestations. The aim of this article is to provide an overview of the various gastrointestinal imaging manifestations that can be encountered in patients with COVID-19, with an emphasis on early diagnosis of the disease as well as treatment related complications.     

COVID-19: A call for mentorship in radiology

During the COVID-19 pandemic, mentorship relationships have undergone significant strain. Sudden changes in the practice environment have caused radiologists to focus their attention to more immediate and essential clinical needs, thus leaving important extracurricular non-clinical endeavors like mentorship by the wayside. However, mentorship is essential more than ever during the pandemic to build strength and resilience in radiology. Specifically, mentorship can foster job resilience, facilitate career development, promote diversity, support wellness, and stimulate future practice growth during this pandemic. Practical actions are described that mentors can follow to help develop and sustain mentorship relationships during the pandemic.SummaryMentorship is critical now during the COVID-19 pandemic to build strength and resilience in radiology.     

Imaging in the COVID-19 era: Lessons learned during a pandemic

The first year of the coronavirus disease 2019 (COVID-19) pandemic has been a year of unprecedented changes, scientific breakthroughs, and controversies. The radiology community has not been spared from the challenges imposed on global healthcare systems. Radiology has played a crucial part in tackling this pandemic, either by demonstrating the manifestations of the virus and guiding patient management, or by safely handling the patients and mitigating transmission within the hospital. Major modifications involving all aspects of daily radiology practice have occurred as a result of the pandemic, including workflow alterations, volume reductions, and strict infection control strategies. Despite the ongoing challenges, considerable knowledge has been gained that will guide future innovations. The aim of this review is to provide the latest evidence on the role of imaging in the diagnosis of the multifaceted manifestations of COVID-19, and to discuss the implications of the pandemic on radiology departments globally, including infection control strategies and delays in cancer screening. Lastly, the promising contribution of artificial intelligence in the COVID-19 pandemic is explored.     

Chest Imaging in Patients Hospitalized With COVID-19 Infection - A Case Series

COVID-19 (Corona Virus Disease-19) is a zoonotic illness first reported in the city of Wuhan, China in December 2019, and is now officially a global pandemic as declared by the World Health Organization. The infection is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). COVID-19 infected patients can be asymptomatic carriers or present with mild-to-severe respiratory symptoms. Imaging, including computed tomography is not recommended to screen/diagnose COVID-19 infections, but plays an important role in management of these patients, and to rule out alternative diagnoses or coexistent diseases. In our multicenter case series, we outline the clinical presentations and illustrate the most common imaging manifestations in patients hospitalized with COVID-19.     

Imaging of the liver segments by ultrasound. A practical approach]

Segmentation of the liver according to Couinaud is the anatomical basis for hepatic surgery. Based upon the dichotomic branching of the portal vein and its ramifications the liver is divided into lobes (right, left and caudate): 4 double segments (DS) (right lobe: anterior and posterior DS; left lobe: medial and lateral DS); and 8 segments (S): caudate lobe (S I); lateral DS (S II and S III); medial DS (S IV); anterior DS (S VIII and S V); posterior DS (S VII and S VI). This three-dimensional concept can also be used in US using hepatic veins, the portal vein and its branches, hepatic fissures and ligaments as landmarks. The localization and extent of a tumor and its relationship to the vasculature of the liver can thus be determined and the surgical management of such patients can be improved. The exact definition of each segment of the liver by US is shown and the preoperative localizations in several cases of surgically confirmed liver tumors are presented.