Table 2 Frequency of different portal system patterns
Patterns | Frequency |
|---|---|
Type 1: LPV bifurcated | 67.4% (n = 31) |
Type 1a | 80.6% (n = 25) |
Type 1b | 16.1% (n = 5) |
Type 1c | 3.2% (n = 1) |
Type 2: LPV trifurcated | 15.2% (n = 7) |
Type 2a | 42.9% (n = 3) |
Type 2b | 42.9% (n = 3) |
Type 2c | 14.2% (n = 1) |
Type 3: LPV quadfurcated | 13% (n = 6) |
Type 3a | 100% (n = 6) |
Type 3b | |
Type 3c | |
Type 4: other | 4.3% (n = 2) |