Research Article
Low-Dose-Area-Constrained Helical TomoTherapy-Based Whole Breast Radiotherapy and Dosimetric Comparison with Tangential Field-in-Field IMRT
Table 2
Average dosimetric characteristics of the organs at risk.
| | | LDC-HT | FIF-IMRT | value |
| | Ipsilateral lung | | | | | | 21.04 | 29.16 | 0.000 | | | 15.31 | 21.98 | 0.000 | | | 11.58 | 17.68 | 0.000 | | | 7.95 | 14.65 | 0.000 | | | 3.84 | 9.97 | 0.000 | | Mean dose (Gy) | 6.12 | 9.02 | 0.000 | | Maximum dose (Gy) | 49.98 | 49.12 | 0.069 | | Heart | | | | | | 4.19 | 9.73 | 0.000 | | | 2.75 | 6.67 | 0.000 | | | 1.45 | 4.96 | 0.000 | | | 0.67 | 3.73 | 0.000 | | | 0.20 | 2.38 | 0.001 | | Mean dose (Gy) | 1.87 | 3.37 | 0.000 | | Maximum dose (Gy) | 42.71 | 48.33 | 0.020 | | Contralateral lung | | | | | Mean dose (Gy) | 0.51 | 0.09 | 0.000 | | Maximum dose (Gy) | 4.33 | 1.63 | 0.000 | |
Both lungs | | | | | | 9.79 | 13.59 | 0.000 | | | 7.44 | 10.26 | 0.000 | | | 5.41 | 8.24 | 0.000 | | | 3.66 | 6.83 | 0.000 | | | 1.79 | 4.65 | 0.000 | | Mean dose (Gy) | 3.15 | 4.25 | 0.000 | | Maximum dose (Gy) | 49.98 | 49.12 | 0.069 | | Contralateral breast | | | | | Mean dose (Gy) | 1.02 | 0.12 | 0.000 | | Maximum dose (Gy) | 4.89 | 1.89 | 0.000 |
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