Verifikasi Nilai Dosis Radiasi Berkas Elektron Pesawat LINAC dengan Luas Lapangan Blok Cerrobend (6×6) cm2 dan (8×8) cm2 Berdasarkan Protokol IAEA TRS 398

Authors

  • Fransischa Ramona Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
  • Dian Milvita Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
  • Fiqi Diyona Rumah Sakit Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.9.2.238-243.2020

Abstract

Telah dilakukan penelitian  verifikasi nilai dosis radiasi berkas elektron pesawat LINAC dengan luas lapangan blok cerrobend (8×8) cm2, (6×6) cm2 dan tanpa blok (10×10) cm2. Penelitian bertujuan memperoleh  nilai dosis radiasi menggunakan blok cerrobend dan tanpa blok agar sesuai dengan dosis radiasi Treatment Planning System (TPS) dan batas toleransi yang ditetapkan protokol IAEA TRS 398 yaitu ±2%.  Pada penelitian digunakan energi berkas elektron (4, 6, 9, dan 12) MeV menggunakan slab phantom dengan detektor ionisasi chamber plane parallel.  Ketebalan blok cerrobend yang digunakan adalah 1,83 cm.  Hasil penelitian menunjukkan bahwa dosis radiasi yang dihasilkan menggunakan blok cerrobend lebih tinggi daripada tanpa menggunakan blok cerrobend. Hal ini karena semakin luas ukuran lapangan radiasi, maka akan semakin rendah dosis radiasi yang diterima dan semakin banyak radiasi hambur terjadi.  Nilai deviasi dosis radiasi yang terukur pada slab phantom terhadap dosis radiasi TPS masih memenuhi toleransi yang ditetapkan oleh protokol IAEA TRS 398 yaitu  -0,81 % sampai dengan 1,36%.

 

Verification of radiation values of instrument LINAC electron beam with field size of the cerrobend block (8×8) cm2, (6×6) cm2and without block (10×10) cm2 has been conducted.  This study aims to get the value of radiation dose using cerrobend blocks and without block to equal with dose radiation Treatment Planning System (TPS) and the tolerance limits established protocol IAEA TRS 398 which is ± 2%. The study use electron beam energy (4, 6, 9, and 12) MeV using slab phantom with ionization chamber plane parallel detectors.  The thickness of the cerrobend block use  1.83 cm. The results show that using cerrobend block produce a greater dose radiation than without block.  This due to the larger the size of the radiation field, the lower the dose received and the more scaterring radiation. Deviation value dose radiation of measurement in slab phantom to dose radiation TPS still within the tolerance by protocol IAEA TRS 398 that is -0.81% to 1.36%.

References

Heru, N.S., Saraswati, A., Tarigan A., dan Samsun, Verifikasi Nilai Dosis terhadap Variasi Lapangan Blok Elektron pada Energi 6 MeV dan 9 MeV Pesawat LINAC Varian (CLINAC IX-SN4740), Prosiding Pertemuan dan Persentasi Ilmiah Penelitian Dasar Ilmu Pengetahuan dan Teknologi Nuklir, Editor : Kusminarto, hal 293-298, Yogyakarta, 2017.

IAEA, Technical Report Series No.398-Absorbed Dose Determination in External Beam Radiotherapy, Vienna, Austria, 2000.

Indriyana L. I., Hidayanto, E., dan Arifin, Z., Analisis Dosis Serap Relaatif Berkas Elektron dengan Variasi Ketebalan Blok Cerrobend pada Pesawat Linear Accelerator, Youngster Physics Journal 3 (3) hal. 231-236, 2014.

Khan, M.F., The Physics of Radiation Therapy, The 4th edition, Lippincott Wiliams and Wilkins, New York, 2014.

Setiawati, E., Ariyanty E., Ramantisan, S., dan Hidatullah, M., Analysis of Size and Location of Irradiation Block of Electron Linear Accelerator to Radiation Output and Absorbed Dose, International Journal of Scientific Engineering and Science 2 (11), hal. 35-38, 2018.

Susworo, Dasar-Dasar Radioterapi, Universitas Indonesia, Jakarta, 2000.

Downloads

Published

2020-11-09

How to Cite

Ramona, F., Milvita, D., & Diyona, F. (2020). Verifikasi Nilai Dosis Radiasi Berkas Elektron Pesawat LINAC dengan Luas Lapangan Blok Cerrobend (6×6) cm2 dan (8×8) cm2 Berdasarkan Protokol IAEA TRS 398. Jurnal Fisika Unand, 9(2), 238–243. https://doi.org/10.25077/jfu.9.2.238-243.2020

Issue

Vol. 9 No. 2 (2020)

Section

Articles

License

Copyright (c) 2020 Fransischa Ramona, Dian Milvita, Fiqi Diyona

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Please find the rights and licenses in JFU (Jurnal Fisika Unand).

1. License

The non-commercial use of the article will be governed by the Creative Commons Attribution license as currently displayed on Creative Commons Attribution-NonCommercial 4.0 International License.

2. Authors Warranties

The author warrants that the article is original, written by stated author(s), has not been published before, contains no unlawful statements, does not infringe the rights of others, is subject to copyright that is vested exclusively in the author and free of any third party rights, and that any necessary written permissions to quote from other sources have been obtained by the author(s).

3. User Rights

JFU's spirit is to disseminate articles published are as free as possible. Under the Creative Commons license, JFU permits users to copy, distribute, display, and perform the work for non-commercial purposes only. Users will also need to attribute authors and JFU on distributing works in the journal.

4. Rights of Authors

Authors retain the following rights:

  • Copyright, and other proprietary rights relating to the article, such as patent rights,
  • The right to use the substance of the article in future own works, including lectures and books,
  • The right to reproduce the article for own purposes, provided the copies are not offered for sale,
  • The right to self-archive the article.

5. Co-Authorship

If the article was jointly prepared by other authors, the signatory of this form warrants that he/she has been authorized by all co-authors to sign this agreement on their behalf, and agrees to inform his/her co-authors of the terms of this agreement.

6. Termination

This agreement can be terminated by the author or JFU upon two months notice where the other party has materially breached this agreement and failed to remedy such breach within a month of being given the terminating partys notice requesting such breach to be remedied. No breach or violation of this agreement will cause this agreement or any license granted in it to terminate automatically or affect the definition of JFU.

7. Royalties

This agreement entitles the author to no royalties or other fees. To such extent as legally permissible, the author waives his or her right to collect royalties relative to the article in respect of any use of the article by JFU or its sublicensee.

8. Miscellaneous

JFU will publish the article (or have it published) in the journal if the articles editorial process is successfully completed and JFU or its sublicensee has become obligated to have the article published. JFU may conform the article to a style of punctuation, spelling, capitalization, referencing and usage that it deems appropriate. The author acknowledges that the article may be published so that it will be publicly accessible and such access will be free of charge for the readers.