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Table 3 Fat fraction, morphological and texture features of LPM

From: Evaluation of lateral pterygoid muscle in patients with temporomandibular joint anterior disk displacement using T1-weighted Dixon sequence: a retrospective study

Variable

NP

ADDWR

ADDWOR

P Value

Fat fraction (%)

3.65 ± 1.50

4.25 ± 1.48

4.63 ± 2.01

0.032*

Morphological features

 Length (cm)

3.45 ± 0.39

3.42 ± 0.27

3.35 ± 0.27

0.367

 Width (cm)

1.88 ± 0.24

1.85 ± 0.24

1.85 ± 0.24

0.868*

 Thickness (cm)

2.35 ± 0.24

2.37 ± 0.20

2.22 ± 0.22

0.005*

Texture features

 ASM (10–3)

2.33 (2.00–2.67)

2.00 (2.00–2.67)

2.00 (1.83–2.67)

0.361

 CON

374.4 (267.4–480.9)

321.9 (265.4–432.4)

337.5 (285.4–418.7)

0.819

 COR (10–4)

8.60 (6.89–9.97)

8.36 (5.67–13.33)

9.04 (7.72–12.16)

0.464

 IDM

0.18 ± 0.02

0.18 ± 0.03

0.18 ± 0.02

0.771

 ENT

6.62 ± 0.21

6.62 ± 0.25

6.63 ± 0.21

0.977*

  1. Note.—Data are represented by mean ± standard deviation or median (quartile range)
  2. LPM, Lateral pterygoid muscle, NP, Normal position disk, ADDWR, Anterior disk displacement with reduction, ADDWOR, Anterior disk displacement without reduction, ASM, Angular second moment, CON, Contrast, COR, Correlation, IDM, Inverse different moment, ENT, Entropy
  3. * P value for the One-way ANOVA test among NP group, ADDWR group and ADDWOR group
  4. P value for the Welch’s ANOVA test among NP group, ADDWR group and ADDWOR group
  5. P value for the Kruskal–Wallis test among NP group, ADDWR group and ADDWOR group