Advantages and disadvantages of 4D-DSA compared with 2D-DSA
| No. | % | |
|---|---|---|
| 4D considered equal to 2D | 13 | 48.1 |
| 4D considered advantageous to 2D | 8 | 29.7 |
| Improved projection | 6 | 22.2 |
| Reduction of vessel overlay | 4 | 14.8 |
| Display of adjacent anatomic structures | 4 | 14.8 |
| 4D considered inferior to 2D | 6 | 22.2 |
| Incorrect grading | 2 | 7.4 |
| Endovascular access not displayed | 2 | 7.4 |
| Contrast injection too early | 1 | 3.7 |
| Incomplete display of arterial feeders | 4 | 18.5 |
| Pseudoretrograde display of small vessels | 2 | 7.4 |
| Motion artifacts | 4 | 14.8 |