When collimating for a forearm examination, which areas must be included?

When collimating for a forearm examination, which areas must be included?

• A. The distal radius and the mid-humerus
• B. The proximal row of carpals and the distal radius
• C. The proximal row of carpals and the distal humerus
• D. The olecranon process and the proximal ulna

Answer: (C)

In a forearm examination, proper collimation is crucial for obtaining a quality image while minimizing radiation exposure to surrounding tissues. The appropriate areas to include are the proximal row of carpals and the distal humerus. This ensures that both the entire length of the forearm from the elbow (where the humerus meets the forearm) to the wrist (where the radius and ulna articulate with the carpals) are visible. Including the proximal row of carpals ensures that the area where the forearm meets the wrist is properly represented in the imaging. Furthermore, including the distal humerus allows for a comprehensive view of the elbow joint and its relationship to the forearm, which can be critical for diagnosing conditions or injuries that may affect the entire region. In contrast, while other options may suggest relevant structures, they do not encompass both the critical joints (elbow and wrist) required for a complete assessment of the forearm's anatomy and function.

In a forearm examination, proper collimation is crucial for obtaining a quality image while minimizing radiation exposure to surrounding tissues. The appropriate areas to include are the proximal row of carpals and the distal humerus. This ensures that both the entire length of the forearm from the elbow (where the humerus meets the forearm) to the wrist (where the radius and ulna articulate with the carpals) are visible.

Including the proximal row of carpals ensures that the area where the forearm meets the wrist is properly represented in the imaging. Furthermore, including the distal humerus allows for a comprehensive view of the elbow joint and its relationship to the forearm, which can be critical for diagnosing conditions or injuries that may affect the entire region.

In contrast, while other options may suggest relevant structures, they do not encompass both the critical joints (elbow and wrist) required for a complete assessment of the forearm's anatomy and function.