Fig 1.
Fig 1.
Interobserver disagreement on MRA and disagreement between MRA and DSA on the occlusion of a basilar tip aneurysm after treatment with coils.
A, DSA image obtained immediately after treatment with coils shows complete aneurysm occlusion.
B, Nonenhanced MOTSA 3D TOF MRA image obtained 5 months after treatment shows filling of the aneurysm neck (arrow), which was interpreted by one observer as a 2-mm remnant and by the other observer as a 2-mm recurrence. During the consensus reading, it was scored as a remnant. Note minor signal intensity loss in the proximal P1 segment of the left posterior cerebral artery.
C, DSA image obtained 5 months after treatment with coils. This image was interpreted as occlusion.
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