Journals / Uludağ Üniversitesi Tıp Fakültesi Dergisi / 2018 / Cilt: 44 - Sayı: 2

RETROSPEVTİVE STUDY OF TARGET VOLUME AND CRİTİCAL ORGAN DOSES USİNG THREE VOLUMETRİC ARC THERAPY (VMAT) TECNİQUES İN HEAD AND NECK CANCER (H&N) RADİOTHERAPY

Baş Boyun Kanseri (H&N) Radyoterapisinde Üç Farklı Hacimsel Ayarlı Ark Terapi (VMAT) Tekniği İle Hedef Hacim ve Kritik Organ Dozlarının Retrospektif İncelenmesi

Pages
65–70
Publication Date
2018-08-01
DOI
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AI Summary & Key Takeaways

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

However the low dose value obtanied from the parotid gland and the brain stem has made sVMAT tecnique superior to other tecniques.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study is the target volüme dose and critical organ doses in three different radiotherapy plans reported with the volumetric arc therapy (VMAT) teqniques in head and neck cancer (H&N) radiotherapy In radiotherapy plans, with 8 H&N patients; the form of double rotation 1 arc (sVMAT), double ark (dVMAT) and 150 collimator angles (cVMAT) plans have been prepared.
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Key Findings & Data:No significant difference was abserved in the values of the left and right parotid Dmean, however, the sVMAT tecnique for the right parotid was found lower dose value.
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Conclusion & Impact:However the low dose value obtanied from the parotid gland and the brain stem has made sVMAT tecnique superior to other tecniques.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Colimator Angle · Head and Neck Cancer (H&N) · Monaco

Abstract

The aim of this study is the target volüme dose and critical organ doses in three different radiotherapy plans reported with the volumetric arc therapy (VMAT) teqniques in head and neck cancer (H&N) radiotherapy In radiotherapy plans, with 8 H&N patients; the form of double rotation 1 arc (sVMAT), double ark (dVMAT) and 150 collimator angles (cVMAT) plans have been prepared. In three methods, the prescribed dose of the target volüme could be given in the desired way. No significant difference was abserved in the values of the left and right parotid Dmean, however, the sVMAT tecnique for the right parotid was found lower dose value. In three different plans, sVAMT dose was provided in the desired way and organ doses could be kept within the desired limits. However the low dose value obtanied from the parotid gland and the brain stem has made sVMAT tecnique superior to other tecniques.

Özet

Baş boyun kanseri (H&N) radyoterapisinde hacimsel ayarlı ark terapi (VMAT) tekniği ile hazırlanan üç farklı radyoterapi planında, hedef hacim dozu ve kritik organ dozlarını incelemesi hedeflenmiştir.Çalışmada 8 baş boyun kanseri (H&N) tanılı olgu değerlendirildi. Radyoterapi planlarında; çift rotasyon şeklinde 1 ark (sVMAT), çift ark (dVMAT) ve 150 kolimatör açılı olacak şekilde (cVMAT) planları hazırlandı. Üç yöntemde hedef hacme reçete edilen doz istenilen şekilde verilebilmiştir. Sağ ve sol parotis Dmean değerlerinde anlamlı fark gözlenmemiş ancak sağ parotis için sVMAT tekniği daha düşük doz aldığı görülmüştür. Üç farklı planda tümör dozu istenilen şekilde sağlanmıştır ve organ dozlarımız istenilen sınırlar içerisinde tutulabilmiştir. Ancak parotis bezi ve beyin sapında elde edilen düşük doz değeri sVMAT tekniğini diğer tekniklere göre üstün kılmıştır.

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Cite This Article

AYDIN, O., ABAKAY, C. D., TUNÇ, S. G., ÇETİNTAŞ, S. K., KURT, M., BOLAT, D., ALTAŞ, H. (2018). RETROSPEVTİVE STUDY OF TARGET VOLUME AND CRİTİCAL ORGAN DOSES USİNG THREE VOLUMETRİC ARC THERAPY (VMAT) TECNİQUES İN HEAD AND NECK CANCER (H&N) RADİOTHERAPY. Uludağ Üniversitesi Tıp Fakültesi Dergisi, Cilt: 44 - Sayı: 2, 65–70. https://ajindex.com/articles/134878

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References (1)

  1. Ahn B.S., Park S.-Y., Park J.M., Et Al. Dosimetric Effects Of Sectional Adjustments Of Collimator Angles On Volumetric Modulated Arc Therapy For Irregularly-Shaped Targets. Plos One, 2017, 12.4: E0174924. 20. Lee, T.-F., Ting H.-M., Chao P.-J., Fang F.-M. Dual Arc Vo-lumetric-Modulated Arc Radiotherapy (Vmat) Of Nasopharyn-geal Carcinomas: A Simultaneous Integrated Boost Treatment Plan Comparison With Intensity-Modulated Radiotherapies And Single Arc Vmat. Clinical Oncology, 2012, 24.3: 196-207. 19. Vanetti E, Clivio A, Nicoloni G, Et Al. Volumetric Modulated Arc Radiotherapy For Carcinomas Of The Oro-Pharynx, Hypo-Pharynx And Larynx: A Treatment Planning Comparison With Fixed Field Imrt. Radiotherapy And Oncology, 2009, 92.1: 111-117. 18. Sze H.C.K., Lee M.C.H., Hung W.M. Et Al. Rapidarc Radiot-herapy Planning For Prostate Cancer: Single-Arc And Double-Arc Techniques Vs. Intensity-Modulated Radiothe-rapy. Medical Dosimetry, 2012, 37.1: 87-91. 17. Alvarez Moret, J, Pohl F, Koelbl O, Dobler B. Evaluation Of Volumetric Modulated Arc Therapy (Vmat) With Oncentra Masterplan® For The Treatment Of Head And Neck Can-cer. Radiation Oncology, 2010, 5.1: 110. 16. Zhao, L-R, Zhou Y-B, Sun J-G. Comparison Of Plan Optimiza-tion For Single And Dual Volumetric-Modulated Arc Therapy Versus Intensity-Modulated Radiation Therapy During Post- Mastectomy Regional İrradiation. Oncology Letters, 2016, 11.5: 3389-3394. 15. Dai X, Zhao Y, Liang Z, Et Al. Volumetric-Modulated Arc Therapy For Oropharyngeal Carcinoma: A Dosimetric And De-livery Efficiency Comparison With Static-Field Imrt. Physica Medica: European Journal Of Medical Physics, 2015, 31.1: 54-59. 14. Cantürk E, Topgul G, Gurler O, Et Al. Endometrium, Serviks Ve Larinks Kanserlerinin Yoğunluk Ayarlı Radyoterapi Tekni-ğinde Doz Homojenite İndeksinin Kantitatif Olarak Değerlendi-rilmesi ve Homojenite İndeks Değerlerinin Karşılaştırılma-sı. Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2017, 19.3: 135-140. 13. Feuvret L, Noël G, Mazeron J-J, Bey P. Conformity index: a review. International Journal of Radiation Oncology• Biology• Physics, 2006, 64.2: 333-342. 12. Zhang P, Happersett L, Yang Y, Et Al. Optimization Of Colli-mator Trajectory In Volumetric Modulated Arc Therapy: Deve-lopment And Evaluation For Paraspinal Sbrt. International Jo-urnal Of Radiation Oncology• Biology• Physics, 2010, 77.2: 591-599. 11. Oddıraju S, Rangaraj D, Papıez L. Su‐E‐T‐384: Combining Multiple Arcs Into A Single Arc For Efficient