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Fig 2. Different qualities of bone removal, anterior-inferior view. Note the visibility of the origin of the ophthalmic artery in both images (arrowheads).
A, "Excellent" bone removal without artifacts. There is a small aneurysm of the right middle cerebral artery (arrow).
B, "Moderate" result with remnants of bone (arrows) because of movement of the patient during one of the scans. The arteries within the skull base are still visible. There is a small aneurysm of the anterior communicating artery (arrow).
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