Incidental Axillary Dose of Tomotherapy in Hypofractionated Whole Breast Radiotherapy for Early Breast Cancer: A Dosimetrical Analysis
Abstract
:1. Introduction
2. Materials and Methods
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Characteristics | N (%) | |
---|---|---|
Age, median (range) | 51 (40–66) | |
Laterality | Left | 18 (60.0) |
Right | 12 (40.0) | |
pT stage * | T1a | 2 (6.7) |
T1b | 10 (33.3) | |
T1c | 10 (33.3) | |
T2 | 8 (26.7) | |
pN stage * | N0 | 28 (93.3) |
Nmi | 2 (6.7) | |
Pathology | Invasive ductal carcinoma | 26 (86.6) |
Invasive lobular carcinoma | 2 (6.7) | |
Invasive carcinoma, no special type | 2 (6.7) |
Axilla Levels | Dmean, % (Gy ± SD) | V95%[%] | V90%[%] | V80%[%] | V50%[%] |
---|---|---|---|---|---|
Level I | 35.5 (15.5 ± 4.8) | 4.7 ± 3.9 | 7.7 ± 5.8 | 14.0 ± 8.6 | 35.3 ± 14.4 |
Level II | 35.1 (14.9 ± 4.2) | 4.8 ± 3.7 | 9.2 ± 5.1 | 18.0 ± 7.8 | 36.1 ± 11.9 |
Level III | 3.5 (1.5 ± 1.6) | 0 ± 0 | 0 ± 0 | 0 ± 0 | 0.7 ± 2.3 |
RT Techniques | Axilla Levels | Dmean, % (Gy) | V95%[%] | V90%[%] | V80%[%] |
---|---|---|---|---|---|
HT [9] | Level I | 86 | 79 | ND | ND |
Level II | 71 | 51 | ND | ND | |
Level III | 73 | 49 | ND | ND | |
ST [9] | Level I | 66 | 51 | ND | ND |
Level II | 44 | 26 | ND | ND | |
Level III | 31 | 15 | ND | ND | |
s-IMRT [10] | Level I | 55.4 (27.7) | 16.9 | 22.1 | 31.3 |
Level II | 21.2 (10.6) | 1.7 | 2.7 | 5.7 | |
Level III | 5 (2.5) | 0 | 0 | 0.1 | |
VMAT * [11] | Level I | 26.66 | 2.6 | 6 | ND |
Level II | 17.83 | 2.6 | 2.4 | ND | |
Level III | 5.96 | ND | ND | ND |
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Yeo, S.-G.; Lim, C.W.; Hur, S.-M.; Kim, Z.; Cho, K.H.; Kim, M.-J. Incidental Axillary Dose of Tomotherapy in Hypofractionated Whole Breast Radiotherapy for Early Breast Cancer: A Dosimetrical Analysis. Medicina 2023, 59, 1081. https://doi.org/10.3390/medicina59061081
Yeo S-G, Lim CW, Hur S-M, Kim Z, Cho KH, Kim M-J. Incidental Axillary Dose of Tomotherapy in Hypofractionated Whole Breast Radiotherapy for Early Breast Cancer: A Dosimetrical Analysis. Medicina. 2023; 59(6):1081. https://doi.org/10.3390/medicina59061081
Chicago/Turabian StyleYeo, Seung-Gu, Cheol Wan Lim, Sung-Mo Hur, Zisun Kim, Kwang Hwan Cho, and Min-Jeong Kim. 2023. "Incidental Axillary Dose of Tomotherapy in Hypofractionated Whole Breast Radiotherapy for Early Breast Cancer: A Dosimetrical Analysis" Medicina 59, no. 6: 1081. https://doi.org/10.3390/medicina59061081