Perbandingan Nilai Mean Glandular Dose (MGD) dari Penggunaan Filter Molybdenum (Mo) dan Rhodium (Rh) Pada Pesawat Mamografi

Authors

  • Zhafirah Putri Fadhilah Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas, Kampus Unand Limau Manis, Padang, 25163
  • Rico Adrial Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas, Kampus Unand Limau Manis, Padang, 25163
  • Fafi Rahmah Instalasi Radiologi. RSUD Dr. Achmad Mochtar, Bukittinggi, Indonesia

DOI:

https://doi.org/10.25077/jfu.12.3.362-366.2023

Keywords:

Mamografi, MGD, Molybdenum, Rhodium

Abstract

Pesawat mamografi merupakan alat yang digunakan pada kegiatan skrining payudara, sehingga dosis radiasi yang diterima pada payudara atau Mean Glandular Dose (MGD) perlu diperhatikan. Penelitian ini menggunakan pesawat mamografi dengan anoda berbahan Molybdenum (Mo) dan filter dengan bahan Molybdenum (Mo) dan Rhodium (Rh). Penelitian ini dilakukan dengan tujuan untuk mendapatkan nilai MGD dari setiap penggunaan tegangan tabung dengan kombinasi anoda filter Mo/Mo dan Mo/Rh serta membandingkannya. Penelitian ini menggunakan pesawat mamografi, fantom Nuclear Associates 18-220 dengan ketebalan 45 mm dan RaySafe X2 MAM. Pengambilan data dilakukan dengan dua mode penyinaran yaitu secara otomatis dan manual. Penyinaran manual menggunakan variasi tegangan dari (23 – 32) kV. Hasil dari penyinaran otomatis didapatkan arus tabung yang sesuai untuk ukuran fantom yang digunakan yaitu 80 mAs. Pada penyinaran manual didapatkan nilai MGD untuk kombinasi anoda filter Mo/Mo berada pada rentang nilai (0,33 – 1,25) mGy dengan persentase error 11% untuk tegangan 32 kV. Nilai MGD kombinasi anoda filter Mo/Rh berada pada rentang (0,44 – 1,91) mGy dengan persentase error 13,4% untuk tegangan 23%. Nilai MGD kombinasi anoda filter Mo/Rh lebih tinggi dibandingkan kombinasi anoda filter Mo/Mo. Hal ini dikarenakan nomor atom Rhodium (Rh) lebih tinggi apabila dibandingkan nomor atom Molybdenum (Mo). Selain nomor atom, energi puncak sinar-X karakteristik dari bahan filter juga mempengaruhi nilai MGD. Secara keseluruhan nilai yang didapatkan masih dalam batas yang ditetapkan oleh Perka BAPETEN No. 2 Tahun 2018 yaitu di bawah 3 mGy.

References

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Published

2023-07-03

How to Cite

Fadhilah, Z. P., Adrial, R., & Rahmah, F. (2023). Perbandingan Nilai Mean Glandular Dose (MGD) dari Penggunaan Filter Molybdenum (Mo) dan Rhodium (Rh) Pada Pesawat Mamografi. Jurnal Fisika Unand, 12(3), 363–367. https://doi.org/10.25077/jfu.12.3.362-366.2023

Issue

Vol. 12 No. 3 (2023)

Section

Articles

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