Final answer:
Computed Tomography (CT) scanning is most commonly used for Nonaccidental Trauma in children due to its high-resolution imaging capabilities, despite the risk of radiation exposure. Magnetic Resonance Imaging (MRI) is a safer alternative in terms of radiation, but is less commonly used for immediate assessment.
Step-by-step explanation:
The imaging modality most frequently used for Nonaccidental Trauma in children, which often pertains to child abuse cases, is Computed Tomography (CT) scanning. CT scans use X-rays to create detailed images and are particularly valuable for soft tissue scanning, such as evaluating the brain and abdominal organs. A significant advantage of CT scanning is its ability to provide high-resolution images that help in precisely identifying injuries. However, the major disadvantage is the exposure to radiation, which is considerably higher than standard X-rays and poses an increased risk of developing cancer, particularly in children. In contrast, Magnetic Resonance Imaging (MRI) is an imaging technique that does not expose patients to ionizing radiation. MRI utilizes magnetic fields and radio waves to produce detailed images of the body's internal structures, making it a safer alternative, though it is not used as routinely as CT for initial assessment of Nonaccidental Trauma in the acute setting.