Verifikasi Pergeseran Geometri Pesawat Linac Clinax CX Menggunakan Electronic Portal Imaging Device (EPID) Terdapat Kasus Kanker Nasofaring)
DOI:
https://doi.org/10.25077/jfu.11.4.482-486.2022Abstract
Telah dilakukan penelitian mengenai verifikasi pergesesaran geometri pada pesawat Linear Accelerator (Linac) tipe Clinax CX menggunakan Electronic Portal Imaging Device (EPID). Verifikasi dilakukan pada 10 data rekam medis pasien kanker nasofaring di Instalasi Radioterapi Rumah Sakit Universitas Andalas. Proses verifikasi diawali dengan perencanaan Treatment Planning System (TPS) menggunakan Software Eclipse dilanjutkan dengan penyinaran pada EPID. Verifikasi pergeseran geometri berdasarkan pergeseran titik koordinat X, Y, Z. Hasil verifikasi menunjukkan terdapat pergeseran titik koordinat yang melebihi standar IAEA Human Health Series No.31 Tahun 2016, yaitu sebanyak 2 data pasien pada titik koordinat X, 1 data pasien pada titik koordinat Y, dan 1 data pasien pada titik koordinat Z karena mempunyai nilai pergesaran > 0,3 cm. Faktor penyebab terjadinya pergeseran yang signifikan adalah jauhnya jarak antara titik origin perencanaan ke titik origin penyinaran pada EPID.References
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