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Table 1 Patients' characteristics

From: Dosimetric comparison between VMAT plans using the fast-rotating O-ring linac with dual-layer stacked MLC and helical tomotherapy for nasopharyngeal carcinoma

Characteristics

Total (N = 30)

Median age (range)

51.5 (30–72) years

Sex

 Female

7 (25.0%)

 Male

23 (75.0%)

Histology

 Non-keratinizing squamous cell carcinoma

25 (83.3%)

 Undifferentiated carcinoma

5 (16.7%)

T stage

 cT1

18 (60.0%)

 cT2

1 (3.3%)

 cT3

9 (30.0%)

 cT4

2 (6.7%)

N stage

 cN0

3 (10.0%)

 cN1

9 (30.0%)

 cN2

11 (36.7%)

 cN3

7 (23.3%)

AJCC stage (8th Ed)

 I

1 (3.3%)

 II

5 (16.7%)

 III

15 (50.0%)

 Iva

9 (30.0%)