Table 3. CTP parameters of the symptomatic limb, stratified by lesion length, degree of collateralization, SPO and ABI.
| Groups | n | Blood flow [ml/100ml*min-1] (mean ± SD) | p-value | Blood volume [ml/100ml] (mean ± SD) |
p-value | Mean transit time [s] (mean ± SD) |
p-value |
|---|---|---|---|---|---|---|---|
| Length of lesion | |||||||
| Short (<4cm) | 10 | 5.89 ± 1.35 | 0.49 ± 0.09 | 6.19 ± 1.31 | |||
| Medium (4-10cm) | 13 | 7.11 ± 1.83 | 0.01 | 0.62 ± 0.13 | 0.001 | 7.16 ± 2.54 | 0.29 |
| Long (>10cm) | 12 | 9.88 ± 3.66 | 1.00 ± 0.40 | 8.13 ± 3.40 | |||
| Degree of collateralization | |||||||
| Good | 11 | 7.79 ± 2.33 | 0.74 ± 0.31 | 7.20 ± 2.75 | |||
| Medium | 17 | 7.54 ± 3.57 | 0.62 | 0.71 ± 0.36 | 0.79 | 7.55 ± 2.96 | 0.72 |
| Poor | 7 | 8.01 ± 2.53 | 0.70 ± 0.32 | 6.44 ± 1.74 | |||
| SPO | |||||||
| Normal | 4 | 9.11 ± 3.81 | 0.72 ± 0.40 | 5.90 ± 2.50 | |||
| Mildly pathologic | 20 | 9.37 ± 7.60 | 0.48 | 0.53 ± 0.72 | 0.70 | 6.24 ± 7.31 | 0.66 |
| Severely pathologic | 11 | 7.41 ± 3.80 | 0.64 ± 0.71 | 6.53 ± 7.53 | |||
| ABI | |||||||
| ≥0.70 | 8 | 7.05 ± 1.44 | 0.58 ± 0.08 | 6.71 ± 1.70 | |||
| 0.60–0.69 | 9 | 7.16 ± 2.52 | 0.17 | 0.58 ± 0.13 | 0.006 | 6.25 ± 2.00 | 0.73 |
| ≤0.59 | 10 | 9.27 ± 3.52 | 0.96 ± 0.35 | 8.46 ± 4.06 |
ABI: ankle-brachial pressure index, SD: standard deviation, SPO: segmental pulse oscillography.