What projection is used to demonstrate the uppermost portion of the lungs free of superimposition with the clavicles?

• A. PA projection
• B. Apical lordotic projection
• C. Lateral projection
• D. Oblique projection

Answer: (B)

The apical lordotic projection is specifically designed to achieve a clear view of the uppermost portions of the lungs, particularly the apices, without the interference of the clavicles, which can obscure this area in other projections.

In this projection, the patient leans back, allowing the shoulders to drop away from the lung apices. This positioning elevates the clavicles and creates a clearer view of the lung apices, minimizing superimposition. This is critical in diagnostic imaging, as it enhances the visualization of potential pathologies located in the upper lung regions, such as tumors or infections.

Other projections, while useful for different diagnostic purposes, do not effectively isolate the apices from the clavicular obstruction. For example, the PA projection positions the patient upright with the arms at their sides, which can lead to clavicular shadowing on the lung apices. The lateral projection involves a side view that does not emphasize the upper lung fields specifically and can also be affected by the presence of the clavicles. The oblique projection, while useful for visualizing specific structures, may not adequately address the requirement to demonstrate the apices without superimposition from the clavicles. Therefore, the choice of the apical lordotic projection is essential for