RT Book, Section A1 Schwartz, David T. SR Print(0) ID 125550 T1 Section VI. Head CT T2 Emergency Radiology: Case Studies YR 2008 FD 2008 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-140917-9 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=125550 RD 2024/10/04 AB Computed tomography (CT) is the most useful neuroimaging study in emergency medicine practice because it readily detects acute blood collections and intracranial lesions causing mass effect. These are the most important immediate considerations in patients presenting with head trauma, headache, or stroke.