## 3 Results
### Correlation Between Myocardial Strain and LGE Assessment  
The LGE was positive in 16 DMD patients, defining LGE+ group. Meanwhile, 12 DMD patients presented no evidence of LGE defining the LGE - group. Comparisons of strain measurements within the anterolateral and inferolateral segments of the LV among the LGE+ and LGE\(-\) groups were conducted relative to the healthy controls (Table 5). Additionally, a box plot was generated to illustrate the difference in global strain between the healthy controls and the LGE+ and LGE\(-\) groups (Figure 4). A significant difference was found between the healthy controls and the LGE\(-\) group in the anterolateral circumferential strain (\(p\)-value = 0.033) and the inferolateral circumferential strain (\(p\)-value = 0.042) values. Findings were similar regarding the longitudinal and radial strain in anterolateral and inferolateral segments (all \(p\)-values \(<\) 0.05). CMR-FT analysis of the inferolateral and anterolateral segments identified notable disparities between the healthy controls and those  
Figure 3: ROC curves of the GCS, GLS, GRS on the short axis, and GLS on the short axis to differentiate between the controls and DMD subjects.  
Figure 2: (**A,B**) Examples of strain measurements using the CVI42 software (version 6.0.2 (3846)): (**C,D**) global circumferential strain (GCS), (**E,F**) global longitudinal strain (GLS), and (**G,H**) global radial strain (GRS) strain values from the same DMD patient.  
without LGE. Based on the results, the inferolateral and anterolateral segments were the most affected segments. Figure 5 shows a bull's-eye diagram illustrating the distribution of strain across 16 segments of the LV. In this diagram, myocardial segments in DMD patients are indicated in red, while those in healthy controls are in blue.  
Figure 4: Box plot of the circumferential, longitudinal, and radial strain in the anterolateral and inferolateral segments of the controls, DMD LGE+, and DMD LGE – groups (the line inside the box represents the median; central box values range from lowest to highest quartile.).  
Figure 5: A bull’s-eye diagram illustrating the distribution of strain across 16 segments of the LV in the DMD patients (in red) and healthy controls (in blue): (**a**) circumferential strain, (**b**) longitudinal strain, and (**c**) radial strain.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Segment** & **Controls (_n_ = 20)** & **LGE– (_n_ = 12)** & **LGE+ (_n_ = 16)** & _p_**-Value** \\ \hline Circumferential strain (\%) & & & & \\ Anterolateral & \(-20.23\pm 1.85\) & \(-15.32\pm 1.32\) & \(-13.80\pm 1.78\) & 0.033 \\ Inferolateral & \(-20.78\pm 1.70\) & \(-14.05\pm 1.79\) & \(-13.49\pm 1.65\) & 0.042 \\ Longitudinal strain (\%) & & & & \\ Anterolateral & \(-18.58\pm 2.79\) & \(-14.86\pm 1.41\) & \(-12.89\pm 1.85\) & 0.046 \\ Inferolateral & \(-16.94\pm 2.37\) & \(-13.93\pm 1.80\) & \(-13.42\pm 1.62\) & 0.040 \\ Radial strain (\%) & & & & \\ Anterolateral & \(29.72\pm 2.58\) & \(26.18\pm 2.45\) & \(24.32\pm 1.55\) & 0.043 \\ Inferolateral & \(28.10\pm 3.53\) & \(24.89\pm 1.93\) & \(23.74\pm 2.21\) & 0.030 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Segmental strain comparison between the healthy controls and DMD patients with and without LGE.