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FIG 2. A, Left ear injection 3 months after stent implant and coiling of the elastase-induced aneurysm densely opacifies the left CCA (white arrowheads) and the BCA along with its branches. Notice the excellent opacification of the right VA (black arrow) and its derivative muscular branches. This angiogram was performed by hand injection of 5 mL of undiluted Visipaque via a 21-gauge plastic venous cannule into the left central ear artery.
B, Aortogram in the same animal at 6 months opacifies the same vessels, but to a lesser degree. Both the left CCA (white arrowheads) and the right VA (black arrow) are less opacified when compared with the ear injection technique. Note the nonvisualization of the muscular branches of the right VA. This angiogram was performed by hand injection of 5 mL of undiluted Visipaque via a 4F diagnostic catheter without sideholes.
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