Final answer:
Increasing the scan field of view results in the increase of the number of detector cells collecting data, as a wider area requires more detectors to capture the image.
Step-by-step explanation:
The question being asked relates to the effects of increasing the scan field of view in imaging systems such as CT (Computed Tomography) scanners. When the scan field of view is increased, the correct answer is that it increases the number of detector cells collecting data. This is due to the fact that a larger field of view necessitates more detector coverage to maintain image quality. Therefore, the number of detector cells that actively participate in data collection during the scan increases as well, contributing to a potentially more detailed image, depending on the resolution and other factors of the imaging system.
Options related to the range of HU (Hounsfield Units) displayed, the pixel size, and the display field of view are not directly affected by this change unless other parameters of the imaging system are simultaneously altered.