Fig. 3.25 PA chest with lines numbered according to anatomy listed above

Quiz Yourself: Mediastinum Lines, Edges

Using the number assigned to each item, match the items on Fig. 3.25 in the list below to the lines in the image. It is recommended that you test yourself before advancing to the answers.

Mediastinal structures on the PA CXR

1.SVC Edge

2.Right Paratracheal Line

3.Left Paratracheal Stripe (both red and white lines)

4.Aortic Arch

5. Descending Aorta (only left edge seen, and not always)

6.Right Atrium

7.Azygoesophageal edge

8.Left Ventricle

9.Main Pulmonary Artery (also known as: trunk, middle mogul)

Fig. 3.26 Close-up of shoulder on frontal projection showing skeletal anatomy that can be identified

Shoulder Anatomy

Figure 3.26 highlights the anatomy of the shoulder often seen on a normal CXR.

Reference

1. Hall FM. Mach band theory. Radiology. 2001;221(3):850.