Which statement about single-phase and three-phase examinations is incorrect?

The statement indicating that there is greater patient dose with three-phase equipment than with single-phase equipment is inaccurate because it overlooks the fundamental differences in how the two systems operate. Generally, three-phase equipment is designed to deliver more consistent and efficient x-ray output compared to single-phase systems. This consistency allows for better management of radiation dose, often resulting in lower radiation exposure for patients when equivalent images are produced.

When using three-phase equipment, the increased efficiency means that the same image quality can often be achieved with a lower mAs setting, which in turn can reduce the overall radiation dose delivered to the patient. The other statements highlight various aspects of the differences between single-phase and three-phase systems. For example, a single-phase examination at a higher mAs can indeed be matched by a three-phase system at a lower mAs due to its improved output, while three-phase systems typically manage heat more effectively and can produce images that are comparable in quality without sacrificing patient safety. Additionally, the contrast of the radiographs produced by three-phase systems can differ based on other technical factors, making broad generalizations about contrast not applicable without context.