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News Center
Chest X-Rays Can Aid in Rapid Diagnosis of COVID-19, Find Radiologists
A team of radiologists investigating the usefulness of chest X-rays in COVID-19 have found they could aid in a rapid diagnosis of the disease, especially in areas with limited testing capacity or delayed test results.
Radiologists from the LSU Health Sciences Center New Orleans (New Orleans, LA, USA) conducted a retrospective study of nearly 400 persons under investigation (PUI) for COVID-19. They reviewed the patients’ chest X-rays along with concurrent reverse-transcription polymerase chain reaction (RT-PCR) virus tests. Using well-documented COVID-19 imaging patterns, the radiologists categorized each chest X-ray as characteristic, nonspecific, or negative in appearance for COVID-19. The radiologists found a characteristic chest X-ray appearance is highly specific (96.6%) and has a high positive predictive value of 83.8% for SARS-CoV-2 infection in the setting of pandemic.
“The presence of patchy and/or confluent, band-like ground glass opacity or consolidation in a peripheral and mid-to-lower lung zone distribution on a chest radiograph is highly suggestive of SARS-CoV-2 infection and should be used in conjunction with clinical judgment to make a diagnosis,” said Bradley Spieler MD, Associate Professor of Diagnostic Radiology and Vice Chairman of Research in the Department of Radiology at LSU Health New Orleans School of Medicine.
“The chest radiograph, while low in sensitivity, can indicate COVID-19 in patients whose radiographs exhibit characteristic COVID-19 findings, when used in concert with clinical factors,” said John-Paul Grenier, MD, an LSU Health New Orleans Radiology Resident. “While not a substitute for RT-PCR virus tests or chest CT, radiographs could provide a rapid, cost-effective diagnosis of COVID-19 in a subset of infected patients during the COVID-19 pandemic. The utility of this technique is described in the context of known disadvantages of RT-PCR, considered the gold standard in COVID-19 diagnosis, and Chest CT, which is currently not recommended for COVID-19 diagnosis.”
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