Valuation of Isodose Curves in a "Eldorado 78" Cobalt Unit

Authors

  • Antonio Carlos Alexandre Departamento de Física Médica. Faculdade de Ciências Médicas. Pontifícia Universidade Católica (PUC). Campinas (SP), Brasil
  • Cláudio Hissao Sibata Chefe da Divisão de Dosimetria Clínica. Faculdade de Ciências Médicas. Pontifícia Universidade Católica (PUC). Campinas (SP), Brasil
  • Carlos Eduardo de Almeida Chefe do Departamento de Física Médica. Faculdade de Ciências Médicas. Pontifícia Universidade Católica (PUC). Campinas (SP), Brasil

DOI:

https://doi.org/10.32635/2176-9745.RBC.1978v28n4.3605

Keywords:

Radiotherapy/methods, Radiotherapy/instrumentation, Dosimetry

Abstract

In order to evaluate the isodose curves furnished by the manufacturer with "Eldorado 78" Telecobait unit, measurements of the percentage depth dose in the central ray and beam profile at 5cm depth were done. The experimental values of the percentage depth dose and from isodose curves furnished by the manufacturer were compared with those values published by British Journal of Radiology Suplement 11 and a desagreement was found in some cases. The experimental values beam profile were compared with those obtained from isodose curves furnished by the manufacturer. A table of percentage depth dose were made from the experimental values for clinical use.

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References

British Journal of Radiology Suplement n9 11.

ICRU (1973). International Commission on Radiations Units and Measurements, Measurement of Absorbed Dose in a Phantom Irradiated by a Single Beam of X or Gamma Rays, ICRU Report 23 (International Commission on Radiation Units and Measurements, Washington).

JOHNS, H., and CUNNINGHAM, J.: The Physics of Radiology (3d ed.; Springfield, 111., Charles C, Thomas, Publisher, 1969).

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Published

2023-08-11

How to Cite

1.
Alexandre AC, Sibata CH, Almeida CE de. Valuation of Isodose Curves in a "Eldorado 78" Cobalt Unit. Rev. Bras. Cancerol. [Internet]. 2023 Aug. 11 [cited 2024 Nov. 22];28(4):47-59. Available from: https://rbc.inca.gov.br/index.php/revista/article/view/3605

Issue

Vol. 28 No. 4 (1978): July/Aug.

Section

ORIGINAL ARTICLE

License

Creative Commons License

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

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