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Table 1 Patient characteristics and tumor parameters

From: A comparison of liver protection among 3-D conformal radiotherapy, intensity-modulated radiotherapy and RapidArc for hepatocellular carcinoma

Variables No. of patients/volume
Gender  
  Male 16
  Female 4
Age (years)  
  Median 60
Range 41–65
Viral etiology  
  HBs-Ag (+) 15
HBs-Ag (-) 5
  Child-Pugh class  
  A 14
  B 6
GTV (cm3)  
  Median (Range) 753.11 (34.54–2125.72)
  Mean ± SD 526.89 ± 226.24
Equiv. Sphere Diameter (cm)  
  Median (Range) 8.0 (4.3–17.0)
  Mean ± SD 7.5 ± 1.73
PTV (cm3)  
  Median 533.87 (107.53–3568.03)
  Mean ± SD 775.39 ± 361.98
  1. Abbreviations: HBs-Ag hepatitis B surface-antigen, SD standard deviation, GTV gross tumor volume, PTV planning target volume.