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Fig. 3 | BMC Medical Imaging

Fig. 3

From: Development of a morphology-based modeling technique for tracking solid-body displacements: examining the reliability of a potential MRI-only approach for joint kinematics assessment

Fig. 3

Bland–Altman plots of translation (a) and rotation (b) trials for each sequence. a: Plots of the translation displacements quantified with the two sequences. The dashed lines representing the 95 % confidence interval of test-retest differences for all translations show that the between-session differences were within ±1.24 mm (mean/bias = 0.02 mm) and ±1.59 mm (mean/bias = -0.34 mm) for the T1 (left) and the 2D HYCE S (right) sequences, respectively. b: Plots of the rotation displacements quantified with the two sequences. The dashed lines representing the 95 % confidence interval of all rotations show that the test-retest differences were within ±1.27° (mean/bias = -0.14°) and ±0.65° (mean/bias = 0.09°) for the T1 (left) and the 2D HYCE S (right) sequences, respectively. The central narrow line denotes zero difference mark. The dark line at the center represents the trend line. Homoscedasticity (R2 values < 0.1) indicated that the between-session differences in the measurements did not increase with an increase in the magnitude of the measured displacement. Heteroscedasticity was represented by R2 values > 0.1, indicating that the between-session differences in the measurements increased with an increase in the magnitude of the measured displacement

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