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Mean sigma indices for the PTVs
| PTVC: PTVC* | PTVD PTVD† | PTVRT: PTVRT†† | PTVC: PTVRT | PTVD: PTVRT | |
|---|---|---|---|---|---|
| Mean sigma index (%) | 3.0 | 3.1 | 3.3 | 7.3 | 9.1 |
PTV left of the colon indicates the PTV for which the VMAT plan was optimized and right of the colon the PTV under examination.
* PTV delineated using the CT with diagnostic MRI viewed separately.
† PTV delineated on the CT registered with diagnostic MRI.
†† PTV delineated on the CT registered with radiotherapy positioned MRI.
