avb
A Matter of Contrast - 2
In
the image labelled C1 note how the diaphragm blends with the abdominal organs
below it. In the other image there is some air (black, shown by arrows)
between the liver and the right dome of the diaphragm. It has outlined the
thin white line of the diaphragm.
Mind
you, air under the diaphragm is a very serious matter – it indicates that some
abdominal hollow organ has a perforation or rupture, causing gas to escape
into the peritoneal cavity. This is not exam material for you!
Key Point :
Contrast can show structures which are
otherwise invisible.