2D DSA | 3D DSA | 4D DSA | |||||||
---|---|---|---|---|---|---|---|---|---|
Patients* | Definition of the fistulous point | Arterial feeders | Venous drainage† | Definition of the fistulous point | Arterial feeders | Venous drainage† | Definition of the fistulous point | Arterial feeders | Venous drainage† |
P_01‡ | ++ | ++ | + | ++ | ++ | + | +++ | ++ | ++ |
P_02 | +++ | +++ | ++ | + | ++ | ++ | +++ | ++ | +++ |
P_03§ | ++ | +++ | +++ | +++ | +++ | +++ | ++ | +++ | +++ |
P_04 | +++ | +++ | +++ | ++ | ++ | ++ | ++ | ++ | ++ |
P_05¶ | +++ | +++ | +++ | ++ | ++ | ++ | +++ | ++ | ++ |
P_06 | +++ | ++ | ++ | +++ | +++ | ++ | ++ | ++ | ++ |
P_07 | +++ | +++ | ++ | ++ | ++ | ++ | +++ | +++ | ++ |
P_08 | ++ | +++ | +++ | ++ | ++ | +++ | +++ | ++ | +++ |
Median | 3 | 3 | 2.5 | 2 | 2 | 2 | 3 | 2 | 2 |
Rating according to the ability to visualize the microvascular findings: +++ (3), good visualization; ++ (2), moderate visualization; + (1), poor visualization; NA (0), not applicable.
*Patients analogous to table 1.
†Venous drainage under special consideration of reflux into cortical veins.
‡Dislocation of the catheter, technical difficult.
§Coil package not visible in 4D.
¶Movement artifacts.
AVF, arteriovenous fistula; DSA, digital subtraction angiography.