As a test for the knowledge you have gained in the thorax, examine radiographs of the thorax. There are two main views that are generally examined:
Another view frequently taken is the left or right obliques.
For this lesson, we will only show the PA and Lateral views.
|In a PA view, the anterior chest is placed forward onto a film holder. The x-ray machine then shoots x-rays through the body and onto the film. In this way, the anterior thoracic structures should have the best resolution. Most of you have had a general PA radiograph taken. Remember that they always have you take in a deep breath and hold it and also to place you hands on your hips with your shoulders pressed against the film. What this does is to pull the thorax as far forward as possible and the air in the lungs will give a better contrast to muscular structures and viscera because it will be black.
Identify the following structures:
|The lateral view gives a different appearance to the shadow of the heart and aorta.
|Respiration||Cross Sections of the Thorax|
|This is copyrighted©1999 by Wesley Norman, PhD, DSc|