Dosimetric Examination of Out-of-Field Doses with TLD in Breast Irradiation with Different Radiotherapy Techniques
نویسندگان
چکیده
Öz Amaç: Bu çalışmada meme kanseri nedeniyle radyoterapi alan gerçek hastayı taklit eden bir fantom üzerinde farklı organlarda absorbe edilen doz araştırılmıştır. Farklı organlardaki ortalama için tedavi planlama sistemi (TPS) ve termolüminesans dozimetre (TLD) ölçümleri karşılaştırılmıştır. Gereç Yöntemler: Alderson kadın rando sol dokusu hedef hacmi olarak seçildi. Varian DHX cihazında teknikleri ile yapılmış uygulamalara özel planları belirlendi (3DCRT, 5 Alan- IMRT, 7 IMRT). Fantomda belirlenen hacim içindeki yerlere TLD-100 dozimetreleri yerleştirildikten sonra ışınlandı. Daha her teknik elde TPS dozları karşılaştırıldı. Bulgular: 3DCRT, IMRT tekniklerinde planlanan volümün (PTV) değeri TLD arasındaki istatistiksel anlamlılık sırasıyla, p=0.042, p=0.002 p=0.030 bulunmuştur. Tiroid’in dozunda tekniği yapılan planlarda farkın arttığı görülmüştür. Fetüs incelendiğinde saptanmazken fetüs dozu 3.13-16.87 cGy Ayrıca parotis 10.37- 57.75 ölçülmüştür. Sonuç: TPS’in 8 cm’den uzak mesafelerde organ dozlarını tahmin etmede başarısız olduğu söylenebilir. Meme radyoterapisinde 3DCRT tekniğinin tercih edilmesi daha avantajlı olacaktır. Anahtar Kelimeler: Termolüminesans dozimetre, radyoterapi, Alan dışı
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ژورنال
عنوان ژورنال: Akdeniz t?p dergisi
سال: 2022
ISSN: ['2687-2781']
DOI: https://doi.org/10.53394/akd.1059073