Table 1 Comparison of CINE-PC and RT-PC measurements for CSF at C2-C3 level and at aqueduct

CINE-PC

RT-PC

R-value

CINE-PC

RT-PC

R-value

Segment area (mm²)

148 ± 44

(131; 80–256)

165 ± 46

(150; 102–264)

0.91**

3.0 ± 0.8

(2.9; 1.7–5.1)

7.4 ± 1.8

(7.1; 3.2–10.2)

0.2

Q_net (ml/min)

- Net flow rate of Qt

1.7 ± 8.6

(2.8; -20.1–17.5)

10 ± 4.8

(10; 0.6–22.9)

0.27

-0.47 ± 0.47

(-0.43; -1.8–0.3)

-0.03 ± 1.29

(-0.1; -5.0–3.1)

0

Amplitude (ml/min)

- Amplitude flow rate

320 ± 58

(310; 158–465)

327 ± 74

(318; 191–577)

0.83**

19.3 ± 8.0

(19.3; 7.0–45.8)

22.1 ± 9.4

(21.5; 8.6–49.6)

0.93**

SV (10^− 3ml)

- Average Stroke volume

615 ± 151

(602; 270–923)

581 ± 152

(550; 307–901)

0.90**

43 ± 23

(36; 12–104)

46 ± 26

(40; 12–114)

0.89**

T_c (s)

- Cardiac period of Q_t

0.87 ± 0.17

(0.83; 0.56–1.39)

0.86 ± 0.16

(0.84; 0.54–1.37)

0.93**

0.87 ± 0.17

(0.83; 0.57–1.43)

0.86 ± 0.17

(0.83; 0.54–1.42)

0.89**

V_Max (cm/s)

- Caudocranial peak velocity

1.5 ± 0.5

(1.5; 0.7–2.8)

1.3 ± 0.4

(1.2; 0.7–2.1)

0.85**

5.0 ± 1.7

(4.7; 2.2–8.7)

2.4 ± 1.1

(2.4; 0.7–4.9)

0.63**

V_Min (cm/s)

- Craniocaudal peak velocity

2.4 ± 0.7

(2.3; 1.1–4.3)

2.2 ± 0.6

(2.2; 1.2–3.6)

0.89**

5.6 ± 1.5

(5.5; 3.3–8.9)

2.7 ± 1.2

(2.5; 0.2–4.8)

0.62**