Uncertainties in the measurement of relative doses in radiotherapy-Reference-Cited by-同舟云学术

Uncertainties in the measurement of relative doses in radiotherapy

Published:2021-03-01 Issue:1 Volume:27 Page:1-9
ISSN:1898-0309
Container-title:Polish Journal of Medical Physics and Engineering
language:en
Short-container-title:

Author:

Buliński Krzysztof¹²,Kuszewski Tomasz¹²,Wnuk Katarzyna¹²,Braziewicz Janusz¹²,Ślosarek Krzysztof³⁴

Affiliation:

1. Institute of Physics , Jan Kochanowski University , Kielce , Poland

2. Holycross Cancer Center , Kielce , Poland

3. Collegium Medicum , Jan Kochanowski University , Kielce , Poland

4. Maria Skłodowska – Curie, National Research Institute of Oncology , Gliwice Branch , Gliwice , Poland

Abstract

Abstract Both the measurement of the dose and the measurement of its distribution, like any other measurements, are subject to measurement uncertainties. These uncertainties affect all dose calculations and dose distributions in a patient’s body during treatment planning in radiotherapy. Measurement uncertainty is not a medical physicist’s error, but an inevitable element of their work. Planning the dose distribution in a patient’s body, we often try to reduce it in the volume of critical organs (OaR - Organ at Risk) or increase the minimum dose in the PTV region by a few percent. It is believed that the measurement uncertainty should be taken into account in these calculations at the stage of treatment planning. The paper presents the method of calculating the measurement uncertainty for different physical quantities in radiotherapy as percentage depth dose, profile function and output factor, due to the fact that these quantities have a particular impact on the calculated dose distributions in a patient’s body. The uncertainties that must be taken into account in planning treatment the planned dose per fraction and real in PTV, maybe different up to 4%.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/pjmpe-2021-0001

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