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Table 2 Comparison of regional left atrial wall thickness and 12 previously reported studies

From: Accuracy and clinical feasibility of 3D-myocardial thickness map measured by cardiac computed tomogram

  LA overall Anterior wall Septum LA Appendage Left lateral isthmus area Posterior wall Posterior inferior wall Right antral area Left antral area
Histology-based LAWT          
 Hall et al. [8] (n = 34) 1.86 ± 0.59 2.20 ± 0.82 1.60 ± 0.48 1.06 ± 0.49 1.40 ± 0.46
 Platonov et al. [15] (n = 59) 2.60 ± 1.00
 Yen Ho et al. [17] (n = 26) 3.30 ± 1.20 4.50 ± 0.60 3.90 ± 0.70 4.10 ± 0.70
CT image-based LAWT          
 Imada et al. [11] (n = 17) 2.60
 Hoffmeister et al. [10] (n = 42) 2.40 ± 0.50
 Pan et al. [14] (n = 57) 2.50 ± 0.70 1.50 ± 0.30
 Nakamura et al. [13] (n = 62) 2.40 ± 0.20
 Dewland et al. [7] (n = 98) 0.70
 Beinart et al. [6] (n = 64) 2.10 ± 0.63i 1.43 ± 0.44ii 1.81 ± 0.44iii
 Hayashi et al. [9] (n = 17) 2.38 ± 0.36iv 1.44 ± 0.17v 1.64 ± 0.25vi
 Takahashi et al. [16] (n = 50) 1.65 ± 0.44 1.17 ± 0.29 1.14 ± 0.40 1.61 ± 0.31 0.66 ± 0.12vii 0.65 ± 0.16viii
 Inoue et al. [12] (n = 86) 1.50 ± 0.50 1.60 ± 0.50ix 1.60 ± 0.50x 1.40 ± 0.50xi
AMBER-based LAWT          
Overall 120 patients          
 Bipolar Voltage, mV 1.96 ± 0.70 1.73 ± 0.81 1.65 ± 0.67 2.51 ± 1.10 1.49 ± 0.86 2.22 ± 1.13 1.84 ± 0.81
 LAWT, mm 2.10 ± 0.36 2.08 ± 0.36 2.67 ± 0.50 2.30 ± 0.39 2.57 ± 0.58 2.40 ± 0.67 1.80 ± 0.42 2.01 ± 0.47 2.40 ± 0.59
PeAF (n = 69)          
 Bipolar Voltage, mV 1.93 ± 0.72 1.76 ± 0.86 1.61 ± 0.68 2.49 ± 1.13 1.49 ± 0.88 2.15 ± 1.06 1.70 ± 0.83
 LAWT, mm 2.12 ± 0.37 2.10 ± 0.38 2.67 ± 0.50 2.33 ± 0.42 2.59 ± 0.61 2.42 ± 0.69 1.78 ± 0.38 1.98 ± 0.48 2.39 ± 0.57
PeAF & PAF (n = 38)          
 Bipolar Voltage, mV 2.01 ± 0.65 1.69 ± 0.75 1.72 ± 0.64 2.53 ± 0.99 1.46 ± 0.83 2.38 ± 1.18 2.05 ± 0.75
 LAWT, mm 2.06 ± 0.36 2.04 ± 0.36 2.65 ± 0.47 2.23 ± 0.35 2.51 ± 0.57 2.32 ± 0.67 1.81 ± 0.47 2.05 ± 0.48 2.40 ± 0.64
PAF (n = 9)          
 Bipolar Voltage, mV 2.08 ± 0.69 1.79 ± 0.58 1.84 ± 0.69 2.73 ± 1.23 1.41 ± 0.72 2.46 ± 1.37 1.99 ± 0.70
 LAWT, mm 2.21 ± 0.21 2.24 ± 0.18 2.88 ± 0.46 2.41 ± 0.21 2.74 ± 0.35 2.58 ± 0.53 2.09 ± 0.33 2.03 ± 0.31 2.62 ± 0.44
  1. LA, left atrium; CT, computed tomography; LAWT, left atrial wall thickness; AF, atrial fibrillation; PeAF, persistent atrial fibrillation; PAF, paroxysmal atrial fibrillation
  2. In the previous study, if the region was divided into sub-regions, a similar region was selected. The selected regions are as follows: (i) Left lateral ridge; (ii) Middle-superior posterior; (iii) Middle floor; (iv) Mitral Isthmus; (v) Middle Posterior; (vi) Middle floor; (vii) Posterior right superior PV-LA junction; (viii) Anterior left superior; PV-LA junction; (ix) Right floor; (x) right low anterior PV antrum; (xi) Left low anterior PV antrum