Question

during a posteroanterior (pa) chest radiograph, where should the image receptor (ir) be positioned in relation to the patients shoulders?
○ 1.5 - 2 inches (4 - 5 cm) above the shoulders
○ 2 inches (5 cm) below the shoulders
○ directly at the level of the shoulders
○ at the level of the patient’s waist

Explanation:

In a PA chest radiograph, the image receptor (IR) is positioned 1.5 - 2 inches (4 - 5 cm) above the shoulders to capture the entire thoracic cavity, including the apices of the lungs. The other options don't align with standard radiography positioning for PA chest views.

Answer:

1.5 - 2 inches (4 - 5 cm) above the shoulders