Location and size of aneurysms detected only at 3D RA

No.Location*Width × Length × Neck Size, mmStatusDSA
QualitySeries Sufficient
1Ophthalmic1.4 × 2.3 × 2.3UnrupturedExcellentYes
2Ophthalmic1.1 × 0.9 × 0.9UnrupturedExcellentYes
3A2 segment of the ACA1.4 × 1.7 × 1.7UnrupturedExcellentYes
4MCA bifurcation2.2 × 2.2 × 1.6RupturedExcellentYes
5MCA bifurcation1.6 × 1.5 × 1.6UnrupturedExcellentYes
6MCA bifurcation2.3 × 2.2 × 2.7RupturedExcellentNo
7M1 segment of the MCA1.1 × 1.5 × 1.5UnrupturedExcellentNo
  • * ACA indicates anterior cerebral artery; MCA, middle cerebral artery.

  • The overall quality of the DSA images with respect to the 3D DSA series was graded as excellent, good, sufficient, or insufficient.

  • The sufficiency of the number of DSA series in diagnosing or excluding an aneurysm was assessed in terms of the following: usefulness for selective catheterization, adequacy in the depiction of all regions of a vascular territory with minimal overlapping, and depiction of the early arterial phase.