Which of the following is NOT a desirable feature of the C-arm on mammography machines?

In the context of mammography, the design and functionality of the C-arm are critical for ensuring effective imaging while maintaining patient comfort and safety. A heavy weight for the C-arm might initially seem beneficial for stabilization during procedures. However, it can actually present challenges, such as reduced maneuverability and difficulty in adjusting the equipment to different positions quickly, which are essential for optimal imaging.

The other features mentioned contribute positively to the efficiency of mammography procedures. For instance, the rotation capability of at least 180° allows for a range of angles in imaging, enhancing the diagnostic quality. Vertical movement accommodates taller patients, ensuring that all patients receive appropriate positioning without compromising the quality of the images. Maintaining a clear pathway beneath the image receptor support device is also crucial for the workflow, allowing easy access for both the patient and the technologist.

In summary, while stability is important, a heavy C-arm does not align with the desirable characteristics that enhance the operation and adaptability of mammography machines.