Table 3.
Assessment of the anatomical structure detection and preoperative DSA necessity * after presenting conventional CTA images (2D and screen 3D) or reconstructed 3D-VR images, evaluated using Fisher’s exact test, assuming a p-value <0.05 to be significant.
| Image-Based Assessment, n (%) | CTA (n = 260) | 3D-VR (n = 260) | p-Value |
|---|---|---|---|
| anatomical structure detection: | |||
| appropriate | 104 (40) | 149 (57) | 0.0001 |
| not appropriate | 156 (60) | 111 (43) | (significant) |
| preoperative DSA: | |||
| necessary | 147 (57) | 116 (45) | 0.008 |
| not necessary | 113 (43) | 144 (55) | (significant) |
* Based on the questionnaire in Table 1. 2D, two-dimensional; 3D, three-dimensional; CTA, computed tomography angiography; DSA, digital subtraction angiography; VR, virtual reality.