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Tommy Knöös

Sjukhusfysiker

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Comparison of measured and calculated absorbed doses from tangential irradiation of the breast

Författare

  • Tommy Knöös
  • Lars Ahlgren
  • Mats Nilsson

Summary, in English

Calculated absorbed dose distributions from tangential irradiation of the breast have been compared with TLD measurements in a anthropomorfic body-shaped phantom which has gone through all phases of the radiation treatment planning cycle, including mapping of electron densities with a CT scanner, simulation of beam set-up and several treatments with an accelerator. The absorbed doses, measured in the breast are 2-6% lower than those calculated with the clinically used treatment planning system. The deviation is slightly higher when wedges are used. The main source for this deviation is shown to be the limitations in the loss-of-scatter correction in the dose calculation algorithm used. It has also been noted that the variation of the absorbed dose in the target volume is in general smaller than predicted by the calculations.

Avdelning/ar

  • Medicinsk strålningsfysik, Lund
  • Medicinsk strålningsfysik, Malmö

Publiceringsår

1986

Språk

Engelska

Sidor

81-88

Publikation/Tidskrift/Serie

Radiotherapy and Oncology

Volym

7

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Radiology, Nuclear Medicine and Medical Imaging

Nyckelord

  • Tangential treatment
  • Breast cancer
  • Radiation therapy
  • Dose planning
  • Phantom measurements

Status

Published

Forskningsgrupp

  • Medical Radiation Physics, Malmö

ISBN/ISSN/Övrigt

  • ISSN: 1879-0887