|  | 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 | Â | 8.17* | Â | 3.05 | Â | 6.00 | Â | 5.94 | Â |
* Monitor Units | 5 | 746 | 79 | 1125 | 59 | 415 | 18 | 608 | 24 | 5052 | 322 |