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 Collection Type : UI - Tesis (Open)
Title Simulasi perhitungan monte carlo dosis janin pada model kanker payudara berbentuk kotak dengan foton 2 MeV
Call Number T29106
Study Program

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Physical Description xiii, 65 hlm. ill. ; 29 cm.
Holding Institution Universitas Indonesia
Location Perpustakaan UI
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[The fetal dose that received at radiotherapy patient was measured by using
Monte Carlo DOSXYZnrc simulation calculations. Patient was regarded breast
cancer patients and given radiotherapy to the chest area with 2 MeV x-ray beam,
field tangential 6 x 16 cm2, and 5.8 x 14 cm2 supraclavicula (small categories),
field tangential 9 x 15 cm2 and 17.7 x 8.6 cm2 supraclavicula (medium categories)
and tangential 8.5 x 19 cm2 and 20.4 x 11.4 cm2 supraclavicula (large category),
as well as field tangential 6 x 16 cm2, 9 x 15 cm2, and 8.5 x 19 cm2 for patients
who received only tangential treatment. Distance between the radiation field edge
to the position of measurement point varies with assumption that the changing
according the location fetal gestation and observed at each trimester of pregnancy.
At any given distance, the dose calculations performed at 3 different depths of 2,
5, and 10 cm. The calculations show that the fetal dose will decrease with
increasing depth, decreasing of the area field, and at the time of maximum
distance between the edge of the field with a fetal position nearby., Telah dilakukan pengukuran dosis yang diterima janin pasien radioterapi
dengan menggunakan simulasi perhitungan Monte Carlo DOSXYZnrc.
Diandaikan pasien kanker payudara dan diberi radioterapi pada daerah dada
dengan sinar-x 2 MeV, lapangan tangensial 6 x 16 cm2 dan supraclave 14 x 5.8
cm2 (kategori kecil), tangensial 9 x 15 cm2 dan supraclave 17.7 x 8.6 cm2
(kategori sedang), dan tangensial 8.5 x 19 cm2 dan supraclave 20.4 x 11.4 cm2
(kategori besar), serta lapangan tangensial 6 x 16 cm2, 9 x 15 cm2, dan 8.5 x 19
cm2 untuk pasien yang hanya menerima perlakuan tangensial. Jarak antara tepi
lapangan radiasi dengan posisi titik pengukuran dibuat bervariasi dengan asumsi
letak janin yang berubah sesuai umur kehamilan dan diamati pada tiap trimester
kehamilan. Pada setiap jarak tertentu, perhitungan dosis dilakukan pada 3
kedalaman berbeda yaitu 2, 5, dan 10 cm. Hasil perhitungan menunjukkan bahwa
dosis janin akan berkurang dengan bertambahnya kedalaman, berkurangnya luas
lapangan, dan maksimum pada saat jarak antara tepi lapangan dengan posisi janin
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