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J Neurol Sci ; 421: 117308, 2021 02 15.
Article in English | MEDLINE | ID: covidwho-1033825


We evaluated the incidence, distribution, and histopathologic correlates of microvascular brain lesions in patients with severe COVID-19. Sixteen consecutive patients admitted to the intensive care unit with severe COVID-19 undergoing brain MRI for evaluation of coma or neurologic deficits were retrospectively identified. Eleven patients had punctate susceptibility-weighted imaging (SWI) lesions in the subcortical and deep white matter, eight patients had >10 SWI lesions, and four patients had lesions involving the corpus callosum. The distribution of SWI lesions was similar to that seen in patients with hypoxic respiratory failure, sepsis, and disseminated intravascular coagulation. Brain autopsy in one patient revealed that SWI lesions corresponded to widespread microvascular injury, characterized by perivascular and parenchymal petechial hemorrhages and microscopic ischemic lesions. Collectively, these radiologic and histopathologic findings add to growing evidence that patients with severe COVID-19 are at risk for multifocal microvascular hemorrhagic and ischemic lesions in the subcortical and deep white matter.

Brain Injuries/diagnostic imaging , COVID-19/diagnostic imaging , Magnetic Resonance Imaging/methods , Microvessels/diagnostic imaging , Severity of Illness Index , Brain/blood supply , Brain/diagnostic imaging , Brain Injuries/etiology , COVID-19/complications , Humans , Intensive Care Units/trends , Male , Microvessels/injuries , Middle Aged , Retrospective Studies
Comput Biol Med ; 124: 103960, 2020 09.
Article in English | MEDLINE | ID: covidwho-714312


Artificial intelligence (AI) has penetrated the field of medicine, particularly the field of radiology. Since its emergence, the highly virulent coronavirus disease 2019 (COVID-19) has infected over 10 million people, leading to over 500,000 deaths as of July 1st, 2020. Since the outbreak began, almost 28,000 articles about COVID-19 have been published (; however, few have explored the role of imaging and artificial intelligence in COVID-19 patients-specifically, those with comorbidities. This paper begins by presenting the four pathways that can lead to heart and brain injuries following a COVID-19 infection. Our survey also offers insights into the role that imaging can play in the treatment of comorbid patients, based on probabilities derived from COVID-19 symptom statistics. Such symptoms include myocardial injury, hypoxia, plaque rupture, arrhythmias, venous thromboembolism, coronary thrombosis, encephalitis, ischemia, inflammation, and lung injury. At its core, this study considers the role of image-based AI, which can be used to characterize the tissues of a COVID-19 patient and classify the severity of their infection. Image-based AI is more important than ever as the pandemic surges and countries worldwide grapple with limited medical resources for detection and diagnosis.

Betacoronavirus , Brain Injuries/epidemiology , Coronavirus Infections/epidemiology , Heart Injuries/epidemiology , Pneumonia, Viral/epidemiology , Artificial Intelligence , Betacoronavirus/pathogenicity , Betacoronavirus/physiology , Brain Injuries/classification , Brain Injuries/diagnostic imaging , COVID-19 , COVID-19 Testing , Clinical Laboratory Techniques/methods , Comorbidity , Computational Biology , Coronavirus Infections/classification , Coronavirus Infections/diagnosis , Coronavirus Infections/diagnostic imaging , Deep Learning , Heart Injuries/classification , Heart Injuries/diagnostic imaging , Humans , Machine Learning , Pandemics/classification , Pneumonia, Viral/classification , Pneumonia, Viral/diagnostic imaging , Risk Factors , SARS-CoV-2 , Severity of Illness Index