Question

When positioning for the lateral upper airway projection, where should the CR enter if the area of interest is the distal larynx and trachea?

1) C3-4
2) C5-6
3) T1-2
4) T3-4

Answer 1

For the lateral upper airway projection focusing on the distal larynx and trachea, the CR should enter at the level of C5-C6.

Step-by-step explanation:

When positioning for the lateral upper airway projection, the Central Ray (CR) should enter at the level of C5-C6 if the area of interest is the distal larynx and trachea. This positioning ensures an optimal view of the targeted region, allowing medical professionals to visualize the anatomical structures of the upper respiratory tract effectively. The larynx is located at approximately the C3 to C6 level and is the uppermost structure in the lower respiratory tract, which then extends down to the trachea. The trachea serves as a pathway for inhaled air to enter the bronchi and further into bronchioles and alveoli.