Discussion Week 4

Provide detailed responses to the following:

1. When evaluating a chest x-ray (CXR) what are some important differences in the indications and technique of posterior-anterior (P-A), anterior-posterior (A-P), lateral decubitus, oblique, and expiratory views?
2. Structures are seen on the chest radiograph due to density and contrast. How do variations in densities and contrast affect their appearance on a film?

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