Journals / İstanbul Kanuni Sultan Süleyman Tıp Dergisi / 2021 / Cilt: 13 - Sayı: 3

Clinical Dosimetric Comparison of Three Radiotherapy Techniques for Left-Sided Breast and Lymphatic Irradiation

Sol Meme ve Lenfatik Işınlamada Üç Farklı Radyoterapi Tekniğinin Klinik Dozimetrik Karşılaştırılması

Pages
177–183
Publication Date
2022-10-18
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Although each treatment technique has its own advantages and disadvantages, 3D-conformal plans may provide a lower dose coverage for the OAR, which is important for long-term side effects and secondary cancer development.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: We compared the dosimetric differences between three treatment modalities, including three-dimensional conformal radiation therapy (3D-CRT), intensity-modulated radiotherapy (IMRT), and volumetric intensity-modulated arc therapy (VMAT) planning methods, for the breast tangential field and lymphatic draining region following breast radiotherapy in ten patients with left-sided breast carcinoma.
📊
Key Findings & Data:Method: For each patient undergoing breast-conserving surgery and dissection of selected axillary lymph nodes, 3D-CRT, IMRT, and VMAT were planned.
💡
Conclusion & Impact:Although each treatment technique has its own advantages and disadvantages, 3D-conformal plans may provide a lower dose coverage for the OAR, which is important for long-term side effects and secondary cancer development.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: We compared the dosimetric differences between three treatment modalities, including three-dimensional conformal radiation therapy (3D-CRT), intensity-modulated radiotherapy (IMRT), and volumetric intensity-modulated arc therapy (VMAT) planning methods, for the breast tangential field and lymphatic draining region following breast radiotherapy in ten patients with left-sided breast carcinoma. Method: For each patient undergoing breast-conserving surgery and dissection of selected axillary lymph nodes, 3D-CRT, IMRT, and VMAT were planned. Dosimetric parameters of target volumes and organs at risk (OAR) were compared. Planned target volume (PTV) was the whole breast and lymphatic region. A total of 50 Gy was administered at the rate of 2 Gy/fraction to all patients. Results: The dose received by 2% of the PTV for breast radiotherapy was lowest in IMRT planning (p = 0.001); the dose for supraclavicular region was lowest in VMAT (p = 0.001). The dose received by 95% and 98% of the PTV for the axillary region was lowest in 3D-CRT (p = 0.002 and 0.045, respectively). The doses of OAR, including the heart, ipsilateral and contralateral lung, and contralateral breast were lowest in 3D-CRT planning (p < 0.01). IMRT showed the lowest monitor units (p = 0.001). Conclusion: All three planning methods met the dosimetric criteria in patients with breast and axilla radiotherapy indications after breast-conserving surgery. Although each treatment technique has its own advantages and disadvantages, 3D-conformal plans may provide a lower dose coverage for the OAR, which is important for long-term side effects and secondary cancer development.

Özet

Amaç: Üç farklı tedavi yöntemi arasındaki dozimetrik farklılıkları karşılaştırmayı amaçladık. Sol meme kanseri olan 10 hastada meme tanjensiyel alan ve lenfatik drenaj bölgesi için üç boyutlu konformal radyoterapi (3D-CRT), yoğunluk ayarlı radyoterapi (IMRT) ve hacimsel yoğunluk ayarlı ark tedavisi (VMAT) planlama yöntemleri karşılaştırıldı. Yöntem: Meme koruyucu cerrahi ve aksiller lenf nodu diseksiyonu geçiren hastalar seçildi. Her hasta için ayrı ayrı 3D-CRT, IMRT ve VMAT planları yapıldı. Hedef hacimlerin ve risk altındaki organın (OAR) dozimetrik parametreleri karşılaştırıldı. Planlanan hedef hacim (PTV) olarak tüm memenin PTV’si ve lenfatik bölgenin PTV’si tanımlandı. Tüm hastalara 2 Gy/fraksiyonda toplam 50 Gy radyoterapi uygulandı. Bulgular: Meme PTV'nin %2'sinin aldığı doz IMRT planlamasında en düşüktü (p = 0,001), supraklaviküler bölge için ise VMAT’de en düşüktü (p = 0,001). Aksilla bölgesi için PTV’nin %95 ve %98’i tarafından alınan doz en düşük 3D-CRT’de (sırasıyla; p = 0,002 ve 0,045) bulundu. Kalp, ipsilateral ve kontralateral akciğer ve kontralateral meme için OAR dozları 3D-CRT planlamasında en düşüktü (p < 0,01). IMRT ise en düşük monitör birimlerini gösterdi (p = 0,001). Sonuç: Her üç planlama yöntemi de meme koruyucu cerrahi sonrası meme ve aksilla radyoterapi endikasyonları olan hastalarda dozimetrik kriterleri karşılar. Her tedavi tekniğinin kendi avantajları ve dezavantajları olmasına rağmen, 3D-CRT, uzun vadeli yan etkiler ve ikincil kanser gelişimi için önemli olan OAR’ler için daha düşük doz sağlayabilir.

🔖

Cite This Article

ÖZER, E. E., SOYDEMİR, G. P., KIRLI, M., ÖZKAN, G. (2022). Clinical Dosimetric Comparison of Three Radiotherapy Techniques for Left-Sided Breast and Lymphatic Irradiation. İstanbul Kanuni Sultan Süleyman Tıp Dergisi, Cilt: 13 - Sayı: 3, 177–183. https://ajindex.com/articles/550938

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. Ahmad A. Breast Cancer Statistics: Recent Trends. Adv Exp Med Biol. 2019;1152:1-7. doi: 10.1007/978-3-030-20301-6_1
  2. Krug D, Baumann R, Budach W, et al; Breast cancer expert panel of the German Society of Radiation Oncology (DEGRO). Current controversies in radiotherapy for breast cancer. Radiat Oncol. 2017;12:25. doi: 10.1186/ s13014-017-0766-3
  3. Zhang F, Wang Y, Xu W, et al. Dosimetric evaluation of different intensity-modulated radiotherapy techniques for breast cancer after conservative surgery. Technol Cancer Res Treat. 2015;14:515-523. doi: 10.1177/1533034614551873
  4. Lichter AS, Fraass BA, van de Geijn J, Padikal TN. A technique for field matching in primary breast irradiation. Int J Radiat Oncol Biol Phys. 1983;9:263-70. doi: 10.1016/0360-3016(83)90110-4
  5. Zhou GX, Xu SP, Dai XK, et al. Clinical dosimetric study of three radiotherapy techniques for postoperative breast cancer: Helical Tomotherapy, IMRT, and 3D-CRT. Technol Cancer Res Treat. 2011;10:15- 23. doi: 10.7785/tcrt.2012.500174
  6. Haciislamoglu E, Colak F, Canyilmaz E, et al. Dosimetric comparison of left-sided whole-breast irradiation with 3DCRT, forward-planned IMRT, inverse-planned IMRT, helical tomotherapy, and volumetric arc therapy. Phys Med. 2015;31:360-7. doi: 10.1016/j.ejmp.2015.02.005
  7. Supakalin N, Pesee M, Thamronganantasakul K, Promsensa K, Supaadirek C, Krusun S. Comparision of different radiotherapy planning techniques for breast cancer after breast conserving surgery. Asian Pac J Cancer Prev. 2018 Oct 26;19:2929-34. doi: 10.22034/ APJCP.2018.19.10.2929
  8. Hickey BE, James ML, Lehman M, et al. Fraction size in radiation therapy for breast conservation in early breast cancer. Cochrane Database Syst Rev. 2016;7:CD003860. doi: 10.1002/14651858.CD003860.pub4
  9. Alongi F, Giaj-Levra N, Fiorentino A, et al. Low-dose bath with volumetric modulated arc therapy in breast cancer: "Much ado about nothing?". Tumori. 2016;102:335-6. doi: 10.5301/tj.5000516
  10. Liu H, Chen X, He Z, Li J. Evaluation of 3D-CRT, IMRT and VMAT radiotherapy plans for left breast cancer based on clinical dosimetric study. Comput Med Imaging Graph. 2016;54:1-5. doi: 10.1016/j. compmedimag.2016.10.001
  11. Dogan N, Cuttino L, Lloyd R, Bump EA, Arthur DW. Optimized dose coverage of regional lymph nodes in breast cancer: the role of intensitymodulated radiotherapy. Int J Radiat Oncol Biol Phys. 2007;68:1238-50. doi: 10.1016/j.ijrobp.2007.03.059
  12. Kivanc H, Gultekin M, Gurkaynak M, Ozyigit G, Yil