Estimasi Dosis Radiasi 3D Energi Foton Berbasis Percentage Depth Dose (PDD) dan Profile Dose untuk Treatment Planning System (TPS) Pesawat LINAC

Authors

  • Ervy Primadila Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
  • Dian Milvita Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
  • Heru Prasetio PTKMR-BATAN
  • Muhammad Al Jabbar Kanie Rumah Sakit Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.9.3.323-330.2020

Abstract

Telah dilakukan penelitian mengenai estimasi dosis radiasi 3D energi foton berbasis percentage depth dose (PDD) dan profile dose untuk treatment planning system (TPS) pesawat LINAC menggunakan Matlab. Tujuan penelitian ini adalah untuk mempermudah dan meningkatkan ketelitian pada pembacaan distribusi dosis radiasi permukaan di beberapa kedalaman secara langsung dalam satu kurva.  Estimasi dosis radiasi dilakukan menggunakan data PDD dan data profile dose pada kedalaman 5, 10, 15, 20, dan 25 cm.  Data PDD dan profile dose diambil dengan berkas foton 6 MV dan 10 MV pada luas lapangan 10x10 cm2 dan source surface distance (SSD) 100 cm.  Teknik yang digunakan dalam pengolahan data PDD dan profile dose adalah teknik interpolasi agar data-data tersebut memiliki nilai dengan interval 0,1 mm.  Interval 0,1 mm berguna untuk memberikan jarak antar titik distribusi dosis radiasi bernilai sebesar 0,1 mm.  Hasil penelitian adalah estimasi dosis radiasi 3D yang menunjukkan distribusi dosis radiasi permukaan pada setiap kedalaman yang digunakan dalam penelitian.  Estimasi dosis radiasi pada setiap kedalaman memiliki pola distribusi dosis radiasi yang menyerupai pola distribusi dosis radiasi pada TPS standar di Rumah Sakit Universitas Andalas. Estimasi dosis radiasi menunjukkan bahwa distribusi dosis radiasi akan semakin lebar dan nilai dosis radiasi menjadi semakin menurun seiring peningkatan kedalaman target penyinaran. 

 

A research has been conducted on estimating the 3D radiation dose with photon energy based percentage depth dose (PDD) and profile dose for treatment planning system (TPS) of LINAC using Matlab.  The purpose of this study is to simplify and improve accuracy in reading the distribution of surface radiation dose at several depths directly in one curve.  Estimating of radiation dose is done using percentage depth dose (PDD) and profile dose data at depths of 5, 10, 15, 20, and 25 cm.  PDD and profile dose data were obtained using photon energy 6 MV and 10 MV in field size of 10x10 cm2 and source surface distance (SSD) of 100 cm.  The technique used in processing PDD and profile dose is interpolation technique, so that the data have values with interval of 0.1 mm.  The interval of 0.1 mm is useful for giving the distance between points of radiation dose distribution is 0.1 mm.  The results were estimating of 3D radiation dose at each depth used in the study.  The radiation dose estimation for each depth produced has a radiation dose distribution pattern similar to the radiation dose distribution pattern at a standard TPS at Andalas University Hospital.  The radiation dose estimation show that the distribution of radiation dose will get wider and the value of radiation dose will decrease with increasing depth of the radiation target.

References

American Cancer Society, Cancer Facts & Figures 2017, American Cancer Society, Inc., (Atlanta, 2017).

Anam, C., Development of 2D Isodose Curve the PDD and Dose Profiles Using Matlab, Proceeding iSPiNSA, (Diponegoro University, Semarang, 2012).

Ihya, F.N. Anam, C. dan Gunawan, V., Pembuatan Kurva Isodosis 2D dengan menggunakan kurva percentage depth dose (PDD) dan profil dose dengan variasi kedalaman untuk Treatment Planning systemâ€, Jurnal Berkala Fisika 4(16), hal. 131-138, (2013).

Oncology Imaging System, 2020,

https://www.oncologyimaging.com/doseview-3d, diakses Januari 2020.

Podgorsak, E.B., Radiation Oncology Physics: A Handbook for Teachers and Students, (IAEA, Vienna 2005).

Prasetio, H. Yohannes, I. dan Bert, C., Effect of Vero Pan-Tilt Motion on the Dose Distribution, Journal of Applied Clinical Medical 18(4), hal. 144-154, (2017).

Susworo, R., Dasar- Dasar Radioterapi, UI Press, (Jakarta, 2007).

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Published

2020-08-14

How to Cite

Primadila, E., Milvita, D., Prasetio, H., & Kanie, M. A. J. (2020). Estimasi Dosis Radiasi 3D Energi Foton Berbasis Percentage Depth Dose (PDD) dan Profile Dose untuk Treatment Planning System (TPS) Pesawat LINAC. Jurnal Fisika Unand, 9(3), 323–330. https://doi.org/10.25077/jfu.9.3.323-330.2020

Issue

Vol. 9 No. 3 (2020)

Section

Articles

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