Dynamic Contrast-Enhanced Magnetic Resonance Imaging of Regional Nodal Metastasis in Nasopharyngeal Carcinoma: Correlation with Nodal Staging

Table 1

Patient demographic data and tumor characteristics ().

Baseline characteristics
Age (years)
Range	25~67
Median	45
Mean ± SD
Sex
Number of female patients	7
Number of male patients	19
Stage
T stage	Number of patients
1	10
2	5
3	9
4	2
N stage	Number of patients
1	3
2	17
3	6
M stage	Number of patients
0	25
1	1

Notes. Age (years)is patient age at diagnosis; T, N, and M stages were evaluated according to the American Joint Committee on Cancer (AJCC) staging system.
Median values and ranges were N1 (), 0.24 min⁻¹ and 0.17~0.26 min⁻¹; N2 (), 0.29 min⁻¹ and 0.17~0.46 min⁻¹; N3 (), 0.46 min⁻¹ and 0.29~0.70 min⁻¹, respectively (Figure 1). and v_e in the largest node were not correlated with N stage ( and 0.113, resp.). The median values and ranges of were N1, 0.44 min⁻¹ and 0.33~0.66 min⁻¹; N2, 0.38 min⁻¹ and 0.13~0.67 min⁻¹; N3, 0.36 min⁻¹ and 0.10~0.63 min⁻¹, respectively. The median values and ranges of v_e were N1, 0.32 and 0.29~0.70; N2, 0.39 and 0.32~0.60; N3, 0.40 and 0.24~0.62, respectively.