Analisis Dosis Serap Bolus Berbahan Campuran Beeswax dan Petroleum Jelly Dalam Radioterapi Menggunakan Elektron 6 MeV Pada LINAC
DOI:
https://doi.org/10.25077/jfu.11.4.462-466.2022Keywords:
ANOVA, Beeswax, Bolus, Petroleum Jelly, Relative Electron Density (RED)Abstract
Pengobatan kanker pada permukaan kulit menggunakan berkas elektron menghasilkan dosis radiasi yang belum mampu memberikan dosis permukaan secara maksimum, sehingga diperlukan material yang mampu meningkatkan dosis permukaan yang disebut dengan bolus. Penelitian ini akan menguji bolus berbahan campuran Beeswax dan Petroleum Jelly. Pengujian bolus meliputi dosis serap dan nilai Relative Electron Density (RED). Nilai RED diperoleh dari citra tomografi bolus menggunakan CT-Simulator dengan menentukan Region Of Interest (ROI). Nilai dosis serap didapatkan dengan melakukan penyinaran menggunakan instrumentasi Linear Accelerator (LINAC) pada energi 6 MeV. Hasil dosis serap dibaca pada elektrometer dan dianalisis secara statistik menggunakan Analysis of Variance (ANOVA). Nilai RED bolus yang diperoleh pada ketebalan 0,2 cm hingga 0,8 cm memiliki nilai RED yang lebih rendah dari nilai RED payudara tetapi pada ketebalan 1,0 cm memiliki nilai RED yang setara dengan jaringan payudara. Nilai dosis serap pada bolus saat disinari energi 6 MeV untuk ketebalan 0,2 cm sebesar 184,70 cGy, ketebalan 0,4 cm sebesar 182,67 cGy, ketebalan 0,6 cm sebesar 163,23 cGy, ketebalan 0,8 sebesar 125,27 cGy serta ketebalan 1,0 cm sebesar 80,10 cGy. Hasil penelitian bolus berbahan Beeswax dan Petroleum Jelly memiliki nilai RED yang setara dengan jaringan lunak dan dapat mengurangi dosis serap pada kedalaman sehingga bolus berbahan Beeswax dan Petroleum Jelly menjadi salah satu alternatif material bolus saat radioterapi.References
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