Table 5. The results of contrast-to-noise and signal intensity ratio related to the anatomical structures in sagittal sequences.
| Sequence | CNR (C-D)/C | CNR (C-DA)/C | CNR (C-DR)/C | SIR C/D | SIR C/DA | SIR C/DR | SIR DA/D | SIR DR/D |
|---|---|---|---|---|---|---|---|---|
| C-OSag T1WI | 1.27±0.09 | 0.34±0.04 | 0.52±0.01 | 2.27±0.09 | 1.52±0.08 | 2.08±0.05 | 1.50±0.09 | 1.09±0.03 |
| C-OSag PDWI | 2.03±0.11 | 0.41±0.02 | 0.54±0.01 | 3.03±0.11 | 1.70±0.05 | 2.18±0.06 | 1.78±0.05 | 1.39±0.04 |
| C-OSag T2WI | 10.74±0.36 | 0.60±0.02 | 0.81±0.01 | 11.74±0.36 | 2.45±0.11 | 5.19±0.25 | 4.79±0.20 | 2.27±0.10 |
| O-OSag T1WI | 1.61±0.78 | 0.44±0.01 | 0.52±0.01 | 2.61±0.08 | 1.8±0.02 | 2.09±0.03 | 1.45±0.05 | 1.25±0.03 |
| O-OSag PDWI | 1.55±0.85 | 0.30±0.03 | 0.35±0.26 | 2.55±0.08 | 1.44±0.06 | 1.54±0.06 | 1.77±0.02 | 1.66±0.02 |
| O-OSag T2WI | 6.02±0.88 | 0.53±0.15 | 0.55±0.14 | 7.02±0.09 | 2.11±0.07 | 2.23±0.07 | 3.33±0.11 | 3.15±0.09 |
| P value | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 |
C-Sag, O-Sag: C-stands for closed mouth; O-stands for opened mouth. CNR (C-D)/C, CNR (C-DA)/C and CNR (C-DR)/C: C stands for Condyle; D stands for Disc; DA stands for Disc ahead; DR stands for Disc rear. SIR C/D, SIR C/DR, SIR DA/D and SIR DR/D: C stands for Condyle; D stands for Disc; DA stands for Disc ahead; DR stands for Disc rear. T2WI: T2 weighted image; PdWI: Proton density weighted image; T1WI: T1 weighted image; OCor: oblique coronal; OSag: oblique sagittal.