American Registry of Radiologic Technologists (ARRT) Practice Exam

Increasing X-ray intensity results in more photons reaching the image receptor, which, while improving image quality, also leads to a corresponding increase in radiation exposure to the patient and staff. This is why option C is the correct choice, as higher intensity directly correlates with increased radiation dose and potential harm.

When X-ray intensity is heightened, it can create images with greater detail; however, this often comes at the cost of higher radiation exposure. Therefore, while you may achieve better image quality, it is crucial to balance this with the safety of patients and personnel.

The other options do not appropriately reflect the implications of increased X-ray intensity. For instance, higher image contrast is typically achieved through optimal technique and settings, rather than simply increasing intensity. Exposure time might be decreased if the intensity is raised, but this does not directly imply that increased intensity is the main factor. Lastly, lower image resolution is generally a result of poor technique or inadequate settings rather than increased X-ray intensity. Hence, while there are benefits to increased intensity, the associated increase in radiation harm is a significant consideration for radiologic technologists.