SOMERVILLE, MASSACHUSETTS - On February 26, 2020, the Radiological Society of North America (RSNA) put out a press release proclaiming ‘CT (computed tomography) Provides Best Diagnosis for COVID-19.’ The announcement was quickly picked up by news outlets such as Science Daily, EurekaAlert, and a number of other medical news sites.
Collage from Luke Oakden-Rayner
The lead in the RSNA’s press release states:
“In a study of more than 1,000 patients published in the journal Radiology, chest CT outperformed lab testing in the diagnosis of 2019 novel coronavirus disease (COVID-19). The researchers concluded that CT should be used as the primary screening tool for COVID-19.”
They then go on to note:
“...recent research found that the sensitivity of CT for COVID-19 infection was 98 percent compared to RT-PCR (polymerase chain reaction) sensitivity of 71 percent.”
This statement aroused some skepticism. How could CT provide a better test result than PCR if most COVID-19 cases are asymptomatic? Do people with asymptomatic COVID-19 have abnormalities in their lungs?
Radiologist Dr Luke Oakden-RaynThe content herein is subject to copyright by The Yuan. All rights reserved. The content of the services is owned or licensed to The Yuan. The copying or storing of any content for anything other than personal use is expressly prohibited without prior written permission from The Yuan, or the copyright holder identified in the copyright notice contained in the content.