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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