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Table 4 Characteristics by T2 values

From: Comprehensive cardiac magnetic resonance T1, T2, and extracellular volume mapping to define Duchenne cardiomyopathy

Characteristic

Normal T2 (n = 36)

High T2 (n = 13)

p-value

Age (years)

11.3 [9.4–14.7]

15.0 [12.9–19.7]

0.005

Weight (kg)

45 [33–57]

65 [43–83]

0.027

Height (cm)

142 [124–152]

160 [142–170]

0.016

LV ejection fraction (%)

59 [58–62]

53 [48–57]

0.005

LV Cardiac Index (L/min/m2)

3.6 [3.3–4.3]

3.1 [2.6–3.9]

0.035

Indexed LV diastolic volume (ml/m2)

60 [55–69]

73 [59–103]

0.068

Indexed LV systolic volume (ml/m2)

25 [22–30]

32 [25–50]

0.026

LV mass indexed (g/m2)

45 [41–48]

53 [45–65]

0.021

RV ejection fraction (%)

60 [55–64]

57 [55–60]

0.055

Indexed RV diastolic volume (ml/m2)

54 [49–66]

66 [62–76]

0.008

Indexed RV systolic volume (ml/m2)

23 [19–27]

29 [25–31]

0.002

Base native T1 (ms)

1073 [1050–1105]

1069 [1011–1088]

0.340

Mid native T1 (ms)

1062 [1040–1094]

999 [981–1069]

0.012

Apex native T1 (ms)

1063 [1026–1108]

1000 [905–1030]

0.009

ECV base (%)

27.5 [24.0–32.6]

32 [28.0–37.9]

0.060

ECV mid (%)

28.5 [24.4–31.5]

30 [27.5–36.0]

0.210

ECV apex (%)

29.0 [26.2–31.3]

32 [31.0–35.0]

0.032

  1. Characteristics based on normal or high T2 values. Continuous variables presented as median [IQR]. Wilcoxon rank-sum test was used to detect a difference between groups for continuous variables. ECV extracellular volume fraction, LV left ventricle, RV right ventricle