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

When an image is acquired with zoom in nuclear medicine, the primary benefit is an increase in image resolution. Zooming in on a region of interest allows for a closer examination, leading to enhanced detail and clarity of the structures being evaluated. This is particularly important when analyzing small anatomical features or lesions, as the increased resolution aids in more accurate interpretation and diagnosis.

The other options, while relevant in the context of image acquisition, do not correctly describe the effects of zooming in. Background counts may not necessarily increase, and in many instances, zooming can actually help to minimize the influence of background activity on the region of interest. More memory may be needed depending on the specifications of the imaging system and how the image is processed and stored, but this does not directly pertain to the quality of the image itself. Lastly, zooming typically improves contrast by amplifying details and helping to delineate structures more effectively, rather than decreasing it.