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Table 1 Study population characteristics (N = 25)

From: Estimation of second cancer risk after radiotherapy for rectal cancer: comparison of 3D conformal radiotherapy and volumetric modulated arc therapy using different high dose fractionation schemes

Age Years
-Mean, SD 64.8 ± 8.2
-Median (min/max) 64 (46–83)
Gender Number of patients (%)
-M 13 (52)
-F 12 (48)
Stage (AJCC)  
 I 2 (8)
 IIA-B 3 (12)
 IIIA-C 20 (80)
RT  
 -Preoperative 20 (80)
 -Postoperative 5 (20)
PTV volume (cm3)  
 <700 6 (24)
 700–1000 13 (52)
 >1000 6 (24)
Monitor units (MU) Mean, SD
−3DCRT 269.5 ± 15.1
-VMAT 512.7 ± 40.1
  1. SD standard deviation, AJCC American Joint Committee on Cancer, RT Radiotherapy, VMAT volumetric modulated arc therapy, 3DCRT 3 dimensional conformal radiotherapy