Verifikasi Dosis Radiasi Teknik Penyinaran 3D-CRT pada Pasien Kanker Payudara Menggunakan Film EBT3 di Rumah Sakit UNAND
DOI:
https://doi.org/10.25077/jfu.10.2.184-190.2021Abstract
Verifikasi dosis radiasi teknik penyinaran Three-Dimensional Conformal Radiation Therapy  (3D-CRT) pada pasien kanker payudara telah dilakukan menggunakan film EBT3. Verifikasi dosis radiasi dilakukan di Rumah Sakit Universitas Andalas selama Agustus sampai September 2020. Pengukuran dosis radiasi menggunakan film EBT3 dilakukan untuk memverifikasi dosis radiasi terukur dengan Treatment Planning System (TPS) berdasarkan protokol International Atomic Energy Agency (IAEA) Technical Report Series (TRS) 398. Nilai dosis radiasi terukur diamati pada setiap lapangan penyinaran yaitu chest-wall dan supraclave. Verifikasi dosis radiasi dari penyinaran dosis radiasi yang terukur menggunakan film EBT3 mendapatkan nilai dosis radiasi yang lebih tinggi dari dosis radiasi TPS. Nilai dari pengukuran dosis radiasi menunjukkan dosis radiasi terukur pada lapangan penyinaran chest-wall cenderung tinggi jika dibandingkan dengan dosis radiasi terukur pada lapangan penyinaran supraclave. Hasil pengukuran dosis radiasi yang tinggi pada lapangan penyinaran chest-wall disebabkan adanya penggunaan bolus. Berdasarkan hasil pengukuran dosis radiasi tersebut verifikasi dosis radiasi berdasarkan TRS 398 tidak terpenuhi. Diskrepansi dosis radiasi terukur pada setiap pengukuran melebihi standar toleransi TRS 398 yaitu (0-5)%
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Dose verification of Three-Dimensional Conformal Radiation Therapy (3D-CRT) for breast cancer patient has been conducted using film EBT3. The dose radiation had been verificated in Andalas University Hospital from August to September in 2020. Dose radiation measurement using film EBT3 has been verified the dose radiation of Treatment Planning System (TPS) based on International Atomic Energy Agency (IAEA) Technical Report Series (TRS) 398. The measurable of dose radiation has been observed for chest-wall and supraclave. It was shown that the value of measurable dose radiation is higher than dose radiation in the TPS. The value of dose radiation measurement between chest-wall and supraclave showed different pattern. Measurable dose radiation on Chest-wall is tend to higher value than on supraclave. This pattern is may be due to that radiation treatment on chest-wall was using bolus. Furthermore, the dose radiation discrepancy using film EBT3 exceed the standard limitation base on TRS 398. Thus, the dose verification using film EBT3 is not properly enough for breast cancer patient.
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