CT examination is better than MRI for head trauma. CT is superior to MRI for head trauma, especially for early linear fractures, where the continuity of the fractured bone is interrupted and a low-density fracture line can appear in the middle of the broken end, and CT is sensitive to the location of the fracture line while MRI is not. CT is also superior to MRI for the observation of bone scab formation after fracture healing, and CT facilitates the assessment of fracture development and the selection of treatment methods. Early bleeding from a fracture is a component of oxyhemoglobin, not a paramagnetic substance, and the sensitivity of MRI detection is not high, so CT is superior to MRI for head trauma.