Thursday, February 27, 2014

Arrow Sign

This is a high resolution CT scan of a healthy 25 year old volunteer.

Challenge: What do the arrows refer to?

Image shown under Fair Use.


Alex said...

dependent atelectasis

Craig Chen said...

yep! you should be a radiologist :P
Arrow Sign

The arrows show normal gravitational changes that lead to an increase in density in the posterobasal and laterobasal segments of the lower lobes.

Source: UpToDate.