But they can only see what white light reveals. 'If we switch to a blue laser light, however, and look into the lungs, we are able to see early changes in cells which would otherwise be missed by ...

For patients dealing with lingering respiratory symptoms from the coronavirus, a simple chest X-ray can now reveal its impact on the lungs. The two-dimensional (2D) scans simply can't distinguish ...

the machine's X-ray beams send images to a computer that creates multiple separate images, called slices, of your lungs. The dye makes your arteries appear bright and white on the scan pictures so ...