Aneurysm (brain): causes, location, T1, T2 appearance
A. Trauma; middle cerebral artery; hyperintense on T1, hypointense on T2
B. Hypertension; anterior communicating artery; hypointense on T1, hyperintense on T2
C. Infection; posterior communicating artery; isointense on both T1 and T2
D. Genetics; basilar artery; hyperintense on T1, hyperintense on T2