Table 2 Comparison of 23 semiautomatically extracted morphological parameters between unruptured (n = 101) and ruptured (n = 40) sias.

From: Predictive modeling and machine learning show poor performance of clinical, morphological, and hemodynamic parameters for small intracranial aneurysm rupture

Morphological parameters

Unit

Unruptured (n = 101)

Ruptured (n = 40)

p-value

Maximum diameter

mm

3.73 (± 0.82)

4.11 (± 0.76)

0.01

Maximum height

mm

2.53 (± 0.77)

2.91 (± 0.75)

0.009

Maximum height 2

mm

2.53 (± 0.77)

2.91 (± 0.75)

0.009

Perpendicular height

mm

2.15(± 0.8)

2.27 (± 0.74)

0.4

Perpendicular height 2

mm

2.92 (± 0.81)

2.59 (± 0.75)

0.05

Perpendicular maximum width

mm

3.12 (± 0.76)

3.23 (± 0.69)

0.07

Parallel maximum width

mm

3.33 (± 0.78)

3.59 (± 0.76)

0.4

Average neck diameter

mm

2.79 (± 0.67)

2.81 (± 0.66)

0.8

Maximum neck diameter

mm

3.15 (± 0.73)

3.21 (± 0.76)

0.7

Aneurysm area

mm2

22.12 (± 11.07)

25.11 (± 9.75)

0.1

Aneurysm volume

mm3

12.73 (± 8.88)

14.18(± 7.6)

0.4

Ostium area 1

mm2

6.88 (± 3.04)

7.06(± 3.2)

0.8

Ostium area 2

mm2

6.35(± 2.83)

6.35(± 2.78)

1

Aspect ratio 1

0.76 (± 0.35)

0.85(± 0.3)

0.2

Aspect ratio 2

0.86(± 0.39)

0.96 (± 0.35)

0.1

Convex hull volume

mm3

14.26(± 9.53)

16.24 (± 8.33)

0.3

Convex hull surface

mm2

29.41 (± 13.08)

32.82 (± 11.46)

0.2

Ellipticity index

0.28 (± 0.04)

0.28 (± 0.02)

0.5

Non-sphericity index

0.1 (± 0.06)

0.13(± 0.06)

0.01

Undulation index

0.13(± 0.06)

0.13 (± 0.07)

0.6

Alpha

degree

64.32 (± 17.55)

72.59 (± 18.68)

0.5

Beta

degree

56.06(± 17.86)

55.37(± 14.0)

0.06

Gamma

degree

59.62 (± 21.60)

52.04 (± 19.3)

0.06

  1. The table presents the mean values and standard deviations (± σ) for each of the analyzed morphological parameters34.