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Table 3 Effect of noise and smoothing area on strain calculation for simulated data at maximum contraction.

From: Analytical method to measure three-dimensional strain patterns in the left ventricle from single slice displacement data

  

Shear

Normal

 

Noise (σ/max displacement)

RL

LC

RR

LL

CC

Relative RMS Error in E (smoothing area = 25 mm2)

0

34.6%

13.8%

6.8%

13.8%

18.5%

 

0.01

34.6%

15.7%

8.1%

14.1%

21.6%

 

0.02

36.1%

25.5%

10.9%

15.9%

27.1%

 

0.03

36.0%

32.6%

13.3%

19.0%

37.0%

 

0.05

45.9%

46.9%

21.4%

23.2%

61.0%

Relative RMS Error in E (smoothing area = 15 mm2)

0

27.4%

14.4%

5.7%

9.4%

12.2%

 

0.01

28.0%

21.2%

8.0%

10.3%

17.0%

 

0.02

30.9%

30.7%

11.1%

14.0%

28.6%

 

0.03

34.2%

42.0%

15.3%

21.1%

46.8%

 

0.05

46.4%

64.7%

24.7%

28.2%

66.3%