<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>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%.</p>
</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%.

Uncertainties in the measurement of relative doses in radiotherapy

Polish Journal of Medical Physics and Engineering

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

{"article-title":"Uncertainties in the measurement of relative doses in radiotherapy"}

Both the measurement of the dose and the measurement of its distribution, like any other measurements, are subject to measurement uncertainties. These...

Uncertainties in the measurement of relative doses in radiotherapy

Published Online: Mar 18, 2021

Page range: 1 - 9

DOI: https://doi.org/10.2478/pjmpe-2021-0001

Keywords
measurement uncertainty, standard dose, depth dose, beam profile, output factor

© 2021 Krzysztof Buliński et al., published by Sciendo

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

Uncertainties in the measurement of relative doses in radiotherapy

Published Online: Mar 18, 2021

Page range: 1 - 9

DOI: https://doi.org/10.2478/pjmpe-2021-0001

Keywordsmeasurement uncertainty, standard dose, depth dose, beam profile, output factor

© 2021 Krzysztof Buliński et al., published by Sciendo

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

Keywords
measurement uncertainty, standard dose, depth dose, beam profile, output factor