Which adult radiographic examination typically requires the use of a grid?

The use of a grid in radiographic examinations is crucial for improving image quality by reducing scattered radiation that can degrade the final image. Typically, a grid is employed when the body part being imaged is thick and can result in significant scatter.

In the case of rib examinations, the chest area is dense, and therefore the use of a grid helps to ensure that the primary radiation produces a clearer image while minimizing scatter. Similarly, shoulder imaging, which involves the dense structures of the scapula and surrounding tissues, benefits from a grid to enhance the contrast and detail of the resulting radiograph. Vertebral imaging also involves considerable thickness and varying tissue density, making a grid essential for achieving a high-quality image.

Since all these examinations involve areas where scatter radiation could significantly impact the image quality, and grids are important in all of them, the indication that every option requires the use of a grid is correct. Thus, the choice encompassing all of the listed options accurately reflects this requirement in adult radiographic practice.