Table 4.
Significant dosimetric outcomes observed when comparing 3DSBRT, IMRT, and CK planning techniques
| Organ | Parameter | Dose 3DSBRT (cGy) | Range (cGy) | Dose CK (cGy) | Range (cGy) | Dose MRT (cGy) | Range (cGy) | p value | Superior Modality |
|---|---|---|---|---|---|---|---|---|---|
| L kidney | Mean dose | 172.7 | 80-294 | 148.0 | 86-249.8 | 297.3 | 183.4-410.4 | < 0.001 | 3DSBRT and CK |
| L renal vessels | Mean dose | 629.8 | 101-1431 | 828.0 | 178-1585 | 952.5 | 104.3-1621.7 | < 0.001 | 3DSBRT |
| R kidney | Mean dose | 109.1 | 50-220 | 81.5 | 41-150 | 217.7 | 66-429 | 0.007 | 3DSBRT and CK |
| R renal vessels | Maximum dose | 1508.5 | 764-2503 | 1306.7 | 310-2566 | 2063.5 | 981-2984 | 0.001 | 3DSBRT and CK |
| R renal vessels | Mean dose | 460.6 | 130-858 | 622.3 | 87-2380 | 909.2 | 253-1878 | 0.003 | 3DSBRT |
| Celiac trunk | Maximum dose | 3284.9 | 1954-3754 | 3371.9 | 2880-3904 | 2958.8 | 2681-3286 | 0.007 | IMRT |
| Duodenum | Mean dose | 509.5 | 305-745 | 276.6 | 106-543 | 371.2 | 230-717 | < 0.001 | CK and IMRT |
| Duodenum | Dose to 5 cc | 1108.6 | 840-1310 | 779.7 | 380-1273 | 845.9 | 598-1047 | 0.010 | CK and IMRT |
| Liver | Mean dose | 108.7 | 67-178 | 111.7 | 42-218 | 82.1 | 37-128 | < 0.001 | IMRT |
| SMA | Maximum dose | 3551.0 | 2754-3815 | 3572.6 | 1618-4147 | 3068.0 | 1861-3373 | 0.001 | IMRT |
| SMA | Mean dose | 2951.8 | 913-3619 | 2999.4 | 859-3905 | 2745.7 | 533-3123 | 0.015 | IMRT |
| Transverse colon | Dose to 20 cc | 582.9 | 203-916 | 408.5 | 0-844 | 769.5 | 454-1134 | 0.003 | CK |
| Dosimetric value | Definition | Ratio value | Range | Ratio value | Range | Ratio value | Range | p value | Superior Modality |
| Conformality index | Ratio | 1.29 | 1.16-1.50 | 1.19 | 1.14-1.23 | 1.15 | 1.06-1.18 | < 0.001 | CK and IMRT |