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Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project

Individualized dosimetry in nuclear medicine is currently at least advisable in order to obtain the best risk–benefit balance in terms of the maximal dose to lesions and under-threshold doses to radiosensitive organs. This article aims to propose a procedure for fast dosimetric calculations based on...

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Autores principales: Bianco, Davide, Nappi, Carmela, Piscopo, Leandra, Volpe, Fabio, Manganelli, Mariarosaria, Volpicelli, Federica, Loffredo, Filomena, Totaro, Pasquale, Quarto, Maria, Cuocolo, Alberto, Klain, Michele
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9503858/
https://www.ncbi.nlm.nih.gov/pubmed/36143340
http://dx.doi.org/10.3390/life12091303
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author Bianco, Davide
Nappi, Carmela
Piscopo, Leandra
Volpe, Fabio
Manganelli, Mariarosaria
Volpicelli, Federica
Loffredo, Filomena
Totaro, Pasquale
Quarto, Maria
Cuocolo, Alberto
Klain, Michele
author_facet Bianco, Davide
Nappi, Carmela
Piscopo, Leandra
Volpe, Fabio
Manganelli, Mariarosaria
Volpicelli, Federica
Loffredo, Filomena
Totaro, Pasquale
Quarto, Maria
Cuocolo, Alberto
Klain, Michele
author_sort Bianco, Davide
collection PubMed
description Individualized dosimetry in nuclear medicine is currently at least advisable in order to obtain the best risk–benefit balance in terms of the maximal dose to lesions and under-threshold doses to radiosensitive organs. This article aims to propose a procedure for fast dosimetric calculations based on planar whole-body scintigraphy (WBS) images and developed to be employed in everyday clinical practice. Methods: For simplicity and legacy reasons, the method is based on planar imaging dosimetry, complemented with some assumptions on the radiopharmaceutical kinetics empirically derived from single-photon emission tomography/computed tomography (SPECT/CT) image analysis. The idea is to exploit a rough estimate of the time-integrated activity as has been suggested for SPECT/CT dosimetry but using planar images. The resulting further reduction in dose estimation accuracy is moderated by the use of a high-precision Monte-Carlo S-factor, such as those available within the OpenDose project. Results: We moved the problem of individualized dosimetry to a transformed space where comparing doses was imparted to the ICRP Average Male/Female computational phantom, resulting from an activity distribution related to patient’s pharmaceutical uptake. This is a fast method for the personalized dosimetric evaluation of radionuclide therapy, bearing in mind that the resulting doses are meaningful in comparison with thresholds calculated in the same framework. Conclusion: The simplified scheme proposed here can help the community, or even the single physician, establish a quantitative guide-for-the-eye approach to individualized dosimetry.
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spelling pubmed-95038582022-09-24 Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project Bianco, Davide Nappi, Carmela Piscopo, Leandra Volpe, Fabio Manganelli, Mariarosaria Volpicelli, Federica Loffredo, Filomena Totaro, Pasquale Quarto, Maria Cuocolo, Alberto Klain, Michele Life (Basel) Article Individualized dosimetry in nuclear medicine is currently at least advisable in order to obtain the best risk–benefit balance in terms of the maximal dose to lesions and under-threshold doses to radiosensitive organs. This article aims to propose a procedure for fast dosimetric calculations based on planar whole-body scintigraphy (WBS) images and developed to be employed in everyday clinical practice. Methods: For simplicity and legacy reasons, the method is based on planar imaging dosimetry, complemented with some assumptions on the radiopharmaceutical kinetics empirically derived from single-photon emission tomography/computed tomography (SPECT/CT) image analysis. The idea is to exploit a rough estimate of the time-integrated activity as has been suggested for SPECT/CT dosimetry but using planar images. The resulting further reduction in dose estimation accuracy is moderated by the use of a high-precision Monte-Carlo S-factor, such as those available within the OpenDose project. Results: We moved the problem of individualized dosimetry to a transformed space where comparing doses was imparted to the ICRP Average Male/Female computational phantom, resulting from an activity distribution related to patient’s pharmaceutical uptake. This is a fast method for the personalized dosimetric evaluation of radionuclide therapy, bearing in mind that the resulting doses are meaningful in comparison with thresholds calculated in the same framework. Conclusion: The simplified scheme proposed here can help the community, or even the single physician, establish a quantitative guide-for-the-eye approach to individualized dosimetry. MDPI 2022-08-25 /pmc/articles/PMC9503858/ /pubmed/36143340 http://dx.doi.org/10.3390/life12091303 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bianco, Davide
Nappi, Carmela
Piscopo, Leandra
Volpe, Fabio
Manganelli, Mariarosaria
Volpicelli, Federica
Loffredo, Filomena
Totaro, Pasquale
Quarto, Maria
Cuocolo, Alberto
Klain, Michele
Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project
title Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project
title_full Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project
title_fullStr Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project
title_full_unstemmed Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project
title_short Initial Testing of an Approximated, Fast Calculation Procedure for Personalized Dosimetry in Radionuclide Therapy Based on Planar Whole-Body Scan and Monte-Carlo Specific Dose Rates from the OpenDose Project
title_sort initial testing of an approximated, fast calculation procedure for personalized dosimetry in radionuclide therapy based on planar whole-body scan and monte-carlo specific dose rates from the opendose project
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9503858/
https://www.ncbi.nlm.nih.gov/pubmed/36143340
http://dx.doi.org/10.3390/life12091303
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