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Table 3 Left Atrial Volumes, 3D Angles, and Sphericity Indices (n = 60)

From: Revisiting left atrial volumetry by magnetic resonance imaging: the role of atrial shape and 3D angle between left ventricular and left atrial axis

  

Volume abnormal (n)

LAVSAX

  

max (mL/m2)

44.6 ± 7.5

8

max (mL)

88.4 ± 18.0

 

min (mL)

38.6 ± 10.7

 

LAVAL-LV

  

max (mL/m2)

39.7 ± 7.7

1

max (mL)

78.6 ± 17.1

 

min (mL)

31.2 ± 10.0

 

LAVAL-LA

  

max (mL/m2)

50.1 (44.2–57.5)

NA

max (mL)

98.7 (89.4–109.9)

 

min (mL)

43.4 (37.8–55.5)

 

LA and LV long axes deviation angle

  

end-systole (deg)

21.1 ± 6.4

 

end-diastole (deg)

28.3 ± 6.2

 

cyclic angle change (deg)

7.3 ± 4.7

 

LA axis rotation to 4CH plane

  

end-diastole (deg)

20.5 ± 18.0

 

Left atrial 3D sphericity index (3DS)

  

end-systole (%)

85.6 ± 3.2

 

end-diastole (%)

81.7 (79.5–83.8)

 

Left atrial sphericity index (LASP)

  

end-systole (%)

81.7 ± 2.9

 
  1. 4CH 4-chamber plane, LA left atrium, LAVAL-LV and LAVAL-LA left atrial volume calculated by area-length method from left ventricular long axis images and left atrial long axis images, respectively, LAVSAX measured left atrial volume by 3D segmentation, LV left ventricle, NA not applicable