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Table 2 Results of Bland–Altman analysis for all flow parameters

From: Compressed-sensing accelerated 4D flow MRI of cerebrospinal fluid dynamics

Flow parameter Acceleration factor MD (CI) SD UL (CI) LL (CI) Absolute mean
Absolute net flow (ml/s) CSE4 0.31 (0.1; 0.5) 1.19 2.65 (2.3; 3.0) − 2.02 (− 2.4; − 1.7) 7.94
CSE6 0.82 (0.6; 1.1) 1.42 3.60 (3.2; 4.0) − 1.96 (− 2.4; − 1.5) 7.45
CSE8 1.13 (0.9; 1.4) 1.4 3.88 (3.5; 4.3) − 1.61 (− 2.0; − 1.2) 7.12
CSE10 0.82 (0.5;1.2) 2.11 4.95 (4.3; 5.6) − 3–30 (− 3.9; − 2.7) 7.43
SENSE2 0.08 (− 0.3; 0.4) 1.77 3.55 (3.0; 4.2) − 3.39 (− 4.0; − 2.8) 7.59
SENSE      8.25
Peak velocity (cm/s) CSE4 0.31 (− 0.2; 0.8) 3.22 6.63 (5.7; 7.6) − 6.0 (− 5.1; − 6.9) 5.31
CSE6 0.41 (− 0.04;0.9) 2.74 5.78 (5.0; 6.6) − 4.96 (− 4.2; − 5.8) 5.21
CSE8 0.40 (− 0.05;0.9) 2.71 5.72 (5.0; 6.5) − 4.91 (− 4.1; − 5.7) 5.20
CSE10 − 0.22 (− 0.7;0.2) 2.84 5.33 (4.5; 6.1) − 5.79 (− 5.0; − 6–6) 5.85
SENSE2 − 0.32 (− 1.0; 0.3) 3.16 5.88 (4.8; 7.0) − 6.52 (− 5.4; − 7.7) 5.92
SENSE      5.598
Forward flow (ml/s) CSE4 0.78 (0.5; 1.02) 1.44 3.61 (3.6; 5.6) − 2.05 (− 1.6; − 2.5) 8.93
CSE6 0.96 (0.7; 1.2) 1.60 4.10 (3.6; 4.6) − 2.18 (− 1.7; − 2.6) 8.76
CSE8 0.90 (0.6; 1.2) 1.87 4.56 (4.0; 5.1) − 2.77 (− 2.2; − 3.3) 8.81
CSE10 0.31 (− 0.4; 1) 3.91 7.97 (6.8; 9.1) − 7.35 (− 6.2; − 8.5) 9.40
SENSE2 − 0.003 (− 0.4; 0.4) 1.91 3.76 (3.1; 4.4) − 3.76 (− 3.1; − 4.5) 9.23
SENSE      9.71
Backward flow (ml/s) CSE4 0.33 (0.08; 0.6) 1.48 3.23 (2.8; 3.7) − 2.58 (− 2.1; − 3.0) 9.77
CSE6 0.65 (0.3; 0.97) 1.90 4.37 (3.8; 4.9) − 3.06 (− 2.5; − 3.6) 9.49
CSE8 0.87 (0.5; 1.2) 2.02 4.83 (4.3; 5.4) − 3.10 (− 2.5; − 3.7) 9.23
CSE10 0.57 (− 0.08; 1.2) 3.90 8.21 (7.1; 9.3) − 7.07 (− 5.9; − 8.2) 9.53
SENSE2 − 0.21 (− 0.7; 0.3) 2.29 4.28 (3.5; 5.1) − 4.71 (− 3.9; − 5.5) 9.97
SENSE      10.1
  1. SD standard deviation, CI confidence interval, MD mean difference, UL upper limit, LL lower limit
  2. Upper limit of agreement represents the mean difference + 1.96 standard deviations, lower limit of agreement represents the mean difference − 1.96 standard deviations. All numbers in parentheses indicate the 95% confidence interval
  3. SD is given for difference between CSE and SENSE. Deviations between CSE and SENSE were evaluated in 140 measurements for CSE4, 8 and 10 and 135 for CSE6. Deviations between SENSE 2 and SENSE were evaluated for 93 measurements. Absolute mean values are given for reference