We will measure the effect of Head CT Choice on : ( 1 ) parent knowledge regarding their child 's risk of ciTBI , the available diagnostic options , and the risks of radiation exposure associated with a cranial CT scan ( primary outcome ) ; ( 2 ) parent engagement in the decision-making process ; ( 3 ) the degree of conflict parents experience related to feeling uninformed ; ( 4 ) patient and clinician satisfaction with the decision made ; ( 5 ) the rate of ciTBI at seven days ; ( 6 ) the proportion of patients in whom a cranial CT scan is obtained ; and ( 7 ) seven-day healthcare utilization .