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Table 1 Comparison of the mean pulmonary diameter ± standard deviation (maximum; minimum values for TWIST and Conventional CE-MRA respectively.

From: Time-resolved mr venography pre catheter-based ablation for atrial fibrillation

  TWIST (Time-Resolved MRA) Conventional CE-MRA P-values
RUPV    
cc 1.58 ± 0.27 (2.08;1.2) 1.68 ± 0.24 (2.08;1.13) 0.069
ap 1.13 ± 0.23 (1.52;0.63) 1.16 ± 0.19 (1.66;0.88) 0.521
RLPV    
cc 1.69 ± 0.19 (2.06;1.41) 1.72 ± 0.16 (2.14;1.49) 0.307
ap 1.22 ± 0.23 (1.65;0.79) 1.32 ± 0.24 (1.84;0.98) 0.005
LUPV    
cc 1.51 ± 0.33 (2.14;0.47) 1.53 ± 0.31 (2.26;0.59) 0.456
ap 1.05 ± 0.28 (1.73;0.35) 1.09 ± 0.25 (1.69;0.53) 0.168
LLPV    
cc 1.54 ± 0.33 (2.64;1.04) 1.57 ± 0.28 (2.34;1.1) 0.573
ap 1.00 ± 0.27 (1.63;0.52) 0.97 ± 0.23 (1.47;0.49) 0.286
  1. All values in cm. cc = measures in cranial-caudal direction; ap = measures in anterior-posterior direction. The t-test revealed a value of 0.004933 which is much less that the level for statistical significance of 0.05. Therefore, the difference between the measuring ability of TWISE and Conventional CE-MRA is not statistically significant.