A CT scan of healthy lungs looks typical in size with no inflammation, allowing the diaphragm to dome. Lungs with emphysema can look overinflated, with muscle loss, making the diaphragm misshapen.

One CT scan can expose a patient to 10 or 15 times as much radiation as another, Smith-Bindman said. “There is very large variation,” she said, “and the doses vary by an order of magnitude ...

The CT scan was considered to be positive if it showed the presence of an acute traumatic intracranial ... 95 percent confidence interval, 20.4 to 26.2 percent) all had normal CT scans. Table 3.

(Gray News) - CT scans could be an “important cause of cancer” in the United States, according to a new study.. According to the study by scientists at the University of California, San ...

CT scan radiation is expected to cause about 103,000 future cancers among the 61.5 million people who received a CT in 2023, researchers reported April 14 in JAMA Internal Medicine.

Between September 2020 and December 2022, 54 patients with compromised immune systems who had fevers underwent a pair of chest CT scans -- a normal dose scan and an ultra-low-dose scan.