Comparison of Different Techniques in Breast Cancer Radiotherapy Planning

Kara, F. Gülşen; Haydaroğlu, Ayfer; Eren, Hakan; Kitapçıoğlu, Gül

doi:10.5152/tjbh.2014.1772

Cited by 7 publications

(3 citation statements)

References 21 publications

(30 reference statements)

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“…However, there are trade-offs involved in these techniques in an attempt to improve the planning target volume (PTV) and OARs dosimetry. It was also documented in literature that several institutions and radiation therapy departments utilize varying treatment techniques and fractionation schedules for breast radiation treatments [ 11 , 12 ]. These differences could result in overall compromised quality of patient care, manpower, available resources and productivity of the department.…”

Section: Introductionmentioning

confidence: 99%

Dosimetric comparative study of 3DCRT, IMRT, VMAT, Ecomp, and Hybrid techniques for breast radiation therapy

2020

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To assess and compare the dosimetric parameters obtained between three-dimensional conformal radiotherapy (3DCRT), three-dimensional field-in-field (3DFIF), 5-field intensity-modulated radiotherapy (IMRT MF5), tangential IMRT (tIMRT), tangential volumetric modulated arc therapy (tVMAT), electronic tissue compensation (Ecomp), and Hybrid treatment plans. Material and Methods: Thirty planning computed tomography datasets obtained from patients previously treated with whole breast radiation therapy (WBRT) were utilized in this study. Treatment plans were created for 3DCRT, 3DFIF, IMRT MF5, tIMRT, tVMAT, Ecomp, and Hybrid techniques using Eclipse Treatment Planning System (version 13.6) with a prescribed dose of 42.5 Gy in 16 fractions. Results: Techniques with tangential beams produced statistically significantly better organs-at-risk (OARs) dosimetry (p < 0.001). Planning target volume Homogeneity Index (HI) was found to be significantly different among all techniques (p < 0.001), with Ecomp resulting in better HI (1.061 ± 0.029). Ecomp was also observed to require relatively shorter planning time (p < 0.001). Conclusions: Techniques using tangential fields arrangements produced improved OARs dosimetry. Of all the treatment planning techniques employed in this study, Ecomp was found to be relatively easy to plan and produce acceptable dosimetry for WBRT in a short time.

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Section: Introductionmentioning

confidence: 99%

Dosimetric comparative study of 3DCRT, IMRT, VMAT, Ecomp, and Hybrid techniques for breast radiation therapy

2020

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“…The average value of TCP, which represented the result of all dosimetric calculations, did not show a significant difference in the two techniques, and in fact, both techniques provided similar tumor control. Kara et al pointed to the superiority of the MIT, with a reduction of more than 50% in hot spots, and the values of the minimum and mean dose in the MIT 45 were close to the values of the prescription dose. In our study, all values for the left lung, except V20, were significantly different in the two methods, and in the MIT, the dose and volume of the exposed lung decreased.…”

Section: Discussionmentioning

confidence: 77%

Tumor Control Probability (TCP) and Normal Tissue Complication Probability (NTCP) in Mono and Dual-isocentric Techniques of Breast Cancer Radiation Therapy

Abi

Habibian²,

Salimi

et al. 2021

Arch Breast Cancer

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Background: Nowadays, radiation therapy plays an important role in the treatment of breast cancer. The important point is the optimal control of the tumor along with the protection of organs at risk. This study aims to investigate and compare the radiobiological factors of the tumor and organs at risk in two different radiation therapy techniques of breast cancer.Methods: Ten left-sided breast cancer patients with breast-conservative surgery were selected for this study. Three-dimensional treatment planning was performed using CT scan images of the patients using PCRT 3D software. Two different tangential external beam techniques were compared: first, dual-isocentric technique (DIT) with two isocentre, one on the breast tissue, and the other one on the supraclavicular lymph nodes and second, a mono-isocentric technique (MIT) with one isocentre at the intersection of the tangential and the supraclavicular field. The total prescribed dose was 5000 cGy per 25 fractions. Dose-volume histograms (DVHs), Tumor control probability (TCP), and normal tissue complication probability (NTCP) curves were used to compare the dosimetric and radiobiological parameters of the tissues in the prementioned techniques. Results: The results showed that the maximum doses in planning target volume (PTV) with mean values of 109% and 110% in the SI and DIT were not significantly different in both techniques and that they were indeed at the optimum level based on the RTOG 1005 protocol. The dose homogeneity index in MMIT was more than that in DIT, while the conformity index and the mean TCP did not show a significant difference in the two techniques. Furthermore, minimum, mean, and maximum dose in the lung and the probability of pneumonitis decreased in MIT. On the other hand, the maximum dose, the dose of 33%, 66%, and 100% of the heart, and the probability of pericarditis in MIT were lower than the figure in DIT. Conclusion: Due to the absence of hot spots at the intersection of tangential and supraclavicular fields and the reduction of mechanical movements of the coach and collimator in MIT, the superiority of this method was confirmed.

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“…Największą redukcję dawki dla serca i płuc uzyskano dla planów na wdechu. Statystycznie znaczące różnice uzyskano dla technik 3DCRT i VMAT [17,18].…”

Section: Napromienianie Pacjentek W Pozycji Na Brzuchu I Na Plechachunclassified

Udoskonalenia w radioterapii raka piersi zaprezentowane podczas Konferencji ESTRO 37

Olmińska¹

2021

LOS

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Comparison of Different Techniques in Breast Cancer Radiotherapy Planning

Cited by 7 publications

References 21 publications

Dosimetric comparative study of 3DCRT, IMRT, VMAT, Ecomp, and Hybrid techniques for breast radiation therapy

Dosimetric comparative study of 3DCRT, IMRT, VMAT, Ecomp, and Hybrid techniques for breast radiation therapy

Tumor Control Probability (TCP) and Normal Tissue Complication Probability (NTCP) in Mono and Dual-isocentric Techniques of Breast Cancer Radiation Therapy

Udoskonalenia w radioterapii raka piersi zaprezentowane podczas Konferencji ESTRO 37

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