Table 3 Mean and variance of mid-ventricular segmental circumferential strain (E_cc) obtained using the conventional user-assisted and deep learning (DL)-based fully-automatic methods

Mean E_cc

(user-assisted)

− 0.13 ± 0.06

− 0.12 ± 0.05

− 0.15 ± 0.07

− 0.16 ± 0.09

− 0.15 ± 0.07

− 0.15 ± 0.06

Mean E_cc

(automated DL)

− 0.13 ± 0.06

− 0.12 ± 0.06

− 0.15 ± 0.07

− 0.16 ± 0.09

− 0.16 ± 0.08

− 0.15 ± 0.06

Variance of E_cc

(user-assisted)

1E–4 ± 1E–4

6E–4 ± 8E–4

1E−3 ± 2E−3

9E−4 ± 7E−4

5E−4 ± 5E−4

8E−4 ± 1E−3

Variance of E_cc

(automated DL)

3E−4 ± 3E−4

6E−4 ± 5E−4

1E−3 ± 2E−3

1E−3 ± 1E−3

5E−4 ± 3E−4

8E−4 ± 1E−3