Table 1.
IMRT dose objectives.
| ROI | Volume (cc) | Objective | Target (cGy) | Weight (%) | a |
|---|---|---|---|---|---|
| Bladder | 190/527/115 | Max EUD | 4500/2490/4510 | 20/20/20 | 2/2/2 |
| CTV | 95/31/65 | Max Dose | 8000/8100/8100 | 80/50/50 | |
| CTV | Min Dose | 7700/7700/7680 | 100/100/100 | ||
| ORingPTV | Max Dose | 7220/7220/7230 | 10/10/10 | ||
| ORingPTV | Max EUD | 5700/5430/5640 | 10/10/10 | 3/3/3 | |
| Rectum | 57/82/30 | Max EUD | 5350/3340/4560 | 20/20/20 | 2/1/1 |
| RingPTV | 167/168/133 | Max Dose | 7800/7800/7800 | 20/20/10 | |
| RingPTV | Max Dose | 7300/7400/7400 | 100/100/100 |
Dose objectives used for IMRT optimization are set out corresponding to patients 1/2/3 respectively. The second column is not directly related to the assigned objectives but provides some indication of how anatomy differs among the patients. RingPTV refers to the volume contained within the PTV that excludes the CTV, and ORingPTV refers to the volume contained within a 1.5 cm margin encircling the PTV, but excluding the volume within the PTV. All other region of interest (ROI) labels are self‐explanatory. The equivalent uniform dose (EUD) objective is associated with the parameter a, whose value is tabulated in the last column.