Table 2.
Treatment Time Components
| Component | Mean | Standard deviation |
|---|---|---|
| Time in room (TIR) | 10:42 | 3:49 |
| Beam on time (BOT) | 1:21 | 0:33 |
| Image-guidance time (IGT) | 7:26 | 1:54 |
| Intrafraction downtime (IDT) | 1:55 | 2:37 |
Mean time and standard deviation for 4 treatment time variables indentified. TIR is elapsed time measured from the first alignment image to last beam off, inclusive of all pretreatment imaging studies and/or shifts. IGT is time spent performing image guidance procedures and subsequent shifts prior to first beam on. BOT is the actual time the radiation beam is on during a fraction. IDT accounts for time elapsed during any intrafraction interruptions after the first beam-on.