So let's take a look at the bony structures
that can be evaluated on a radiograph.
You can see here both clavicles.
We often see clavicular fractures occur
and sometimes their incidental findings.
So it's important to take a look at all of the bones carefully.
You can see the outline of the scapula
which comes around to this way
and projects posterior to a portion of the lung.
You can see liver in the upper abdomen
and you really shouldn't see any pocket of air in this area.
Every once in a while you may see a little pocket of colon
that can come up this way.
For the most part though, it really should just be in a soft tissue density,
and if you do see air that's concerning for free air in the abdomen.
You can see the spinous processes as we saw earlier
and they really should be midline within the trachea.
And then you should see air in the left upper abdomen
and that usually represents stomach and possibly colon.
On the lateral view, you can have a good image of the thoracic spine,
and this is a good view to take a look at
for any kind of thoracic compression abnormalities or bony abnormalities.
So in this lecture, we've gone over multiple different radiographic projections
of the chest, they include the PA, the lateral, as well as the AP, and decubitus.
We've also gone over different positions
and how they change the appearance of the chest radiograph.
And we've gone over different types of techniques
which you can also change the appearance of a radiograph.
We've also come up with a good algorithm
and you should use this algorithm as you look at
all the different chest x-rays that we'll be evaluating in these future talks.