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Telah dilakukan analisis dosis radiasi pada paru-paru enam orang pasien kanker payudara yang mendapat terapi radiasi sinar-X 6 MV dengan teknik penyinaran Three-Dimensional Conformal Radiation Therapy (3D-CRT). Penelitian ini bertujuan untuk memenuhi asas optimasi dan limitasi dalam proteksi radiasi dengan mengevaluasi dosis radiasi yang diterima target kanker berdasarkan ICRU Report 62, dan dosis yang diterima paru-paru pasien kanker payudara berdasarkan QUANTEC, serta mengetahui efek yang ditimbulkan pasca terapi. Pengambilan data dilakukan pada hasil kurva Dose Volume Histogram (DVH) yang didapatkan dari perencanaan penyinaran oleh dokter dan fisikawan medis di Rumah Sakit Universitas Andalas. Hasil penelitian yang didapatkan pengobatan pasien memenuhi asas optimasi karena mendapatkan dosis radiasi yang maksimal pada daerah target kanker. Nilai dosis radiasi yang diterima paru-paru pada tiga orang pasien tidak memenuhi asas limitasi karena melebihi aturan yang ditetapkan oleh QUANTEC, dan salah satu dari pasien mengalami pneumonitis. Hasil evaluasi dosis radiasi pada Planning Target Volume (PTV) dan paru-paru yaitu dosis radiasi yang diterima paru-paru pasien melebihi aturan QUANTEC dan menjadi salah satu risiko terjadinya pneumonitis. Radiation doses in the lungs of six breast cancer patients who received 6-MV X-ray radiation therapy with the Three Dimensional Conformal Radiation Therapy (3D-CRT) radiation technique has been analysed. This study aims to fulfill the principles of optimization and limitation in radiation protection by evaluating the radiation dose received by the cancer target based on ICRU Report 62, and the dose received by the breast cancer patient's lungs based on QUANTEC, as well as knowing the effects caused post-therapy. Data collection was performed on the results of the Dose Volume Histogram (DVH) curve obtained from radiation planning by doctors and medical physicists at Andalas University Hospital. The results of the study found that the treatment of patients fulfills the principle of optimization because they get the maximum radiation dose in the cancer target area. The value of the radiation dose received by the lungs in three patients did not meet the limitation principle because it exceeded the rules set by QUANTEC, and one of the patients had pneumonitis. The results of the radiation doses on the Planning Target Volume (PTV) and lungs, is the radiation dose received by the patient's lungs exceeds the QUANTEC rule and increases the risks of pneumonitis.

jurnal fisika unand

Analisis Dosis Radiasi Paru-Paru Pasien Kanker Payudara dengan Teknik Three Dimensional Conformal Radiation Therapy (3D-CRT) Berdasarkan Grafik Dose Volume Histogram (DVH)