Table 3 Radial and circumferential 2D strain

Radial Strain

Anterior Strain-%

   Mean

21.6/22.4

24.2/22.7

20.6/21.4

22.6/21.6

22.1/22.8

21.8/22.1

21.0/23.5

   SD

4.0/4.0

2.9/1.7

2.4/1.8

3.0/3.6

8.5/6.2

1.5/1.3

1.9/5.2

   Range

12.6–38.0/18.0–36.0

21–28/21–25

18–24/19–24

19–27/18–28

12.6–38.0/18–35

19–23/20–24

18–24/20–36

Inferior Strain – %

   Mean

20.0/19.4

21.2/18.5

20.4/19.8

20.5/18.8

21.6/22.5

19.8/18.5

18.4/18.1

   SD

4.3/4.1

2.2/2.6

2.3/2.9

4.5/1.3

6.7/7.5

4.1/2.1

3.5/3.2

   Range

11–35/11–37

18–23/16–22

17–22/15–22

17–29/17–21

17–35/16–37

12–23/16–22

11–24/11–22

Circumferential strain

Anterior Strain-%

   Mean

-22.1/-22.6

-22.0/-22.0

-22.0/-21.6

-22.0/-21.8

-22.3/23.0

-21.5/23.8

-22.4/-22.8

   SD

2.5/2.5

3.6/1.6

2.3/3.4

0.89/2.7

3.1/2.9

2.8/1.9

3.2/2.0

   Range

17–26.6/18–27

19–26/20–24

18–24/18–26

21–23/18–25

18–25/19–27

19–25/21–26

17–26.6/19–25

Inferior Strain-%

   Mean

-18.1/-16.2*

-18.0/-17.2

-17.8/-16.2

-16.8/16.3

-17.6/-16.8

-18.3/-16.3

-19.6/-15.7

   SD

2.5/2.9

2.2/3.3

1.6/3.6

0.76/1.2

2.1/2.8

1.7/1.5

3.8/4.5

   Range

14–25/9–22

16–21/14–21

16–19/12–22

16–18/15–18

15–21/13–21

16–21/14–18

14–25/9–22