Which of the following statements about an image acquired with zoom is true?

When an image is acquired with zoom, image resolution is increased because zooming in on the area of interest enhances the detail and clarity of that specific region. This happens as the zoom feature essentially magnifies the pixels in that area, allowing for finer details to be resolved which would be less discernible in a standard or wider field of view.

Increasing the resolution is particularly valuable in nuclear medicine, where the ability to differentiate between subtle variations in uptake can be crucial for diagnosis and interpretation. Techniques that enhance spatial resolution can result in better evaluation of structures and abnormalities.

Other potential effects of zoom include alterations in brightness and contrast, but those are not universally true and may vary based on the imaging system's settings or the nature of the image being captured. While zoom can reduce the field of view by focusing on a smaller area, the primary and most direct outcome of zooming an image is indeed the enhancement of image resolution.