Table 3.
Perfusion values in the more proximal portions of the posterior circulation between VBD patients and in non‐VBD patients
| VBD (n = 77) | Non‐VBD (n = 212) | P valuea | |
|---|---|---|---|
| Right cerebellum | |||
| rCBF | 24.42 (14.97, 34.30) | 26.28 (17.22, 35.72) | NS |
| rCBV | 1.95 (1.45, 2.58) | 2.07 (1.37, 2.87) | NS |
| MTT | 6.29 (5.26, 7.82) | 6.00 (5.19, 7.11) | NS |
| TTP | 21.87 (20.11, 24.72) | 20.58 (18.94, 22.99) | 0.001 |
| Left cerebellum | |||
| rCBF | 25.40 (15.52, 36.02) | 27.23 (17.72, 36.84) | NS |
| rCBV | 2.09 (1.40, 2.79) | 2.22 (1.44, 3.11) | NS |
| MTT | 6.40 (5.60, 7.81) | 6.19 (5.43, 7.63) | NS |
| TTP | 22.03 (19.64, 24.54) | 20.50 (18.91, 22.87) | 0.003 |
| Right pon | |||
| rCBF | 25.27 (16.14, 36.43) | 24.25 (15.98, 34.62) | NS |
| rCBV | 2.10 (1.38, 3.24) | 2.17 (1.47, 3.02) | NS |
| MTT | 6.45 (5.79, 8.05) | 6.20 (5.46, 7.57) | NS |
| TTP | 21.55 (19.73, 25.23) | 20.08 (19.11, 23.40) | 0.016 |
| Left pon | |||
| rCBF | 24.58 (14.53, 33.07) | 25.13 (17.20, 37.09) | NS |
| rCBV | 2.21 (1.38, 3.20) | 2.12 (1.61, 3.10) | NS |
| MTT | 6.56 (5.45, 8.24) | 6.31 (5.39, 7.49) | NS |
| TTP | 21.98 (19.72, 25.02) | 20.60 (19.03, 23.16) | 0.009 |
rCBV indicates relative cerebral blood volume; rCBF, relative cerebral blood flow; MTT, mean transit time; and TTP, time to peak. Values were expressed as median (percentiles of 25th and 75th).
a
P values were calculated by the Mann‐Whitney U test.