Table 3 Dose accumulated on the first and last fraction for MRgART and IGRT workflows; the results for representative DVH dosimetric parameters are reported as median values and range in parenthesis. ^ in bold significant differences (p < 0.05)
From: Dose tracking assessment for magnetic resonance guided adaptive radiotherapy of rectal cancers
| Â | aAcc fr | bMRgART | cIGRT | p |
|---|---|---|---|---|
dPTV \(\:{\text{V}}_{23.75}\) (%) | First | 99.16 (93.33–99.84) | 99.33 (98.05–99.69) | 0.285 |
Last | 99.20 (98.68–99.67) | 98.87 (97.07–99.31) | 0.000 | |
p | 0.976 | 0.000 | Â | |
PTV \(\:{\text{V}}_{26.75}\) (cc) | First | 0.0 (0.0–0.0) | 2.70 (0.00-36.91) | 0.183 |
Last | 0.0 (0.0–0.0) | 0.31 (1.42–7.48) | 0.022 | |
p | 0.163 | 0.028 | Â | |
Bladder \(\:{\text{D}}_{15\text{c}\text{c}}\) (Gy) | First | 18.92 (15.31–23.05) | 19.54 (16.61–23.85 | 0.034 |
Last | 17.24 (13.37–22.18) | 18.59 (13.28–22.94) | 0.009 | |
p | 0.155 | 0.009 | Â | |
Small Bowel \(\:{\text{D}}_{5\text{c}\text{c}}\) (Gy) | First | 23.05 (13.88–26.25) | 23.34 (14.05–26.46) | 0.010 |
Last | 25.98 ( 22.36–26.03) | 25.56 (22.45–26.06) | 0.003 | |
p | 0.342 | 0.009 | Â |