By vgreene, 28 May, 2015 MRA w/o contrast [4,3] preferred; CTA<sup>23</sup> w/ contrast may be used for problem solving [4,1]
By vgreene, 28 May, 2015 If clinical assessment<sup>11</sup> (difficult at this age) is uncertain/indeterminate, CT head w/o contrast<sup>12,13</sup> [3] may be considered but low-yield
By vgreene, 28 May, 2015 If CTA or MRA results uncertain/high clinical suspicion, proceed to conventional angiography<sup>8,9</sup>
By vgreene, 28 May, 2015 MRA w/o contrast [4,3] preferred; CTA<sup>7</sup> w/ contrast may be used for problem solving [4,1]
By vgreene, 28 May, 2015 NAT suspected or (+) high-risk factors (neuro signs, mental status Δ, basilar skull fx)
