PMC:7782580 / 5225-5412 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T34","span":{"begin":16,"end":104},"obj":"Sentence"},{"id":"T35","span":{"begin":105,"end":173},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"2–64 levels)17. The CT images are digitally processed18 to create a three-dimensional image of the body. However, CT examinations are more expensive than CXR examinations19. Recent studie"}