Advantages of head CT

• CT is much faster than MRI, making it the study of choice in cases of trauma and other acute neurological emergencies
• CT can be obtained at considerably less cost than MRI, and is sufficient to exclude many neurological disorders
• CT is less sensitive to patient motion during the examination. because the imaging can be performed much more rapidly
• CT may be easier to perform in claustrophobic or very heavy patients
• CT provides detailed evaluation of cortical bone
• CT allows accurate detection of calcification and metal foreign bodies
• CT can be performed at no risk to the patient with implantable medical devices, such as cardiac pacemakers, ferromagnetic vascular clips, and nerve stimulators