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Table 4 Mean beam on time, treatment time and monitor units for the different planning systems

From: RapidArc, SmartArc and TomoHD compared with classical step and shoot and sliding window intensity modulated radiotherapy in an oropharyngeal cancer treatment plan comparison

  

Step and shoot IMRT (SS)

Sliding window IMRT (SW)

RapidArc VMAT (RA)

SmartArc VMAT (SA)

Helical tomotherapy (HT)

 

n

mean

SE

mean

SE

mean

SE

mean

SE

mean

SE

* Beam on time (minutes)

5

1.87

0.20

3.74

0.20

2.50

0.00

4.00

0.00

5.94

0.37

* Treatment time (minutes)

5

14.01

 

8.17*

 

3.05

 

6.00

 

5.94

 

* Monitor Units

5

746

79

1125

59

415

18

608

24

5052

322

  1. SE = standard error; * = the irradiation time of one of the sliding window IMRT plans, representative for all sliding window IMRT plans.