| http://www.w3.org/ns/prov#value | - Tests such as CT scans, MRI scans, and EEG, although helpful in identifying more serious consequences of head trauma (e.g. skull fracture, hematoma, contusion, seizure) are not useful in identifying many of the effects of concussion, and are usually normal, even in athletes sustaining a severe concussion (in fact, a normal CT or MRI is considered one of the common features of a concussion); and At
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