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AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed?
BACKGROUND: In locoregional radiotherapy of breast cancer with deep inspiration breath hold (DIBH), setup accuracy may depend on hospital protocol. At present, comparison between different positioning devices is challenging due to differing hospital protocols. The aim of this study was to evaluate t...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Via Medica
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9746643/ https://www.ncbi.nlm.nih.gov/pubmed/36523797 http://dx.doi.org/10.5603/RPOR.a2022.0097 |
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author | Laaksomaa, Marko Ahlroth, Jenni Pynnönen, Kiira Murtola, Anna Rossi, Maija Elina |
author_facet | Laaksomaa, Marko Ahlroth, Jenni Pynnönen, Kiira Murtola, Anna Rossi, Maija Elina |
author_sort | Laaksomaa, Marko |
collection | PubMed |
description | BACKGROUND: In locoregional radiotherapy of breast cancer with deep inspiration breath hold (DIBH), setup accuracy may depend on hospital protocol. At present, comparison between different positioning devices is challenging due to differing hospital protocols. The aim of this study was to evaluate the setup accuracy obtained with surface-guided radiation therapy (SGRT; AlignRT®, Catalyst™) or with lasers and real-time position management (RPM™) in DIBH. MATERIALS AND METHODS: A total of 1692 image pairs were analyzed in three groups: positioning using AlignRT® surface guidance system (Group A, n = 45), Catalyst™ (Group C, n = 50) and conventional lasers and tattoos (Group L, n = 46). We evaluated residual errors for the bony chest wall, th1 and humeral head in kV images with laser- or SGRT-based setup with and without daily image-guided radiation therapy (IGRT). RESULTS: Less isocenter variance was found in Group A than in Group L or C (p ≤ 0.05) and in Group C than in L (p = 0.02–0.6). With SGRT only, the smallest random rotation error was found in Group A (p = 0.01). With daily IGRT, only a small difference was found for residual errors between the groups. CONCLUSION: Setup with SGRT improves the isocenter reproducibility compared to lasers and RPM™. Only small differences were found in setup accuracy between the SGRT devices. Due to improved isocenter accuracy, daily orthogonal IGRT is suggested in all the groups. |
format | Online Article Text |
id | pubmed-9746643 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Via Medica |
record_format | MEDLINE/PubMed |
spelling | pubmed-97466432022-12-14 AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? Laaksomaa, Marko Ahlroth, Jenni Pynnönen, Kiira Murtola, Anna Rossi, Maija Elina Rep Pract Oncol Radiother Research Paper BACKGROUND: In locoregional radiotherapy of breast cancer with deep inspiration breath hold (DIBH), setup accuracy may depend on hospital protocol. At present, comparison between different positioning devices is challenging due to differing hospital protocols. The aim of this study was to evaluate the setup accuracy obtained with surface-guided radiation therapy (SGRT; AlignRT®, Catalyst™) or with lasers and real-time position management (RPM™) in DIBH. MATERIALS AND METHODS: A total of 1692 image pairs were analyzed in three groups: positioning using AlignRT® surface guidance system (Group A, n = 45), Catalyst™ (Group C, n = 50) and conventional lasers and tattoos (Group L, n = 46). We evaluated residual errors for the bony chest wall, th1 and humeral head in kV images with laser- or SGRT-based setup with and without daily image-guided radiation therapy (IGRT). RESULTS: Less isocenter variance was found in Group A than in Group L or C (p ≤ 0.05) and in Group C than in L (p = 0.02–0.6). With SGRT only, the smallest random rotation error was found in Group A (p = 0.01). With daily IGRT, only a small difference was found for residual errors between the groups. CONCLUSION: Setup with SGRT improves the isocenter reproducibility compared to lasers and RPM™. Only small differences were found in setup accuracy between the SGRT devices. Due to improved isocenter accuracy, daily orthogonal IGRT is suggested in all the groups. Via Medica 2022-10-31 /pmc/articles/PMC9746643/ /pubmed/36523797 http://dx.doi.org/10.5603/RPOR.a2022.0097 Text en © 2022 Greater Poland Cancer Centre https://creativecommons.org/licenses/by-nc-nd/4.0/This article is available in open access under Creative Common Attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as they credit the authors and the publisher, but without permission to change them in any way or use them commercially |
spellingShingle | Research Paper Laaksomaa, Marko Ahlroth, Jenni Pynnönen, Kiira Murtola, Anna Rossi, Maija Elina AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? |
title | AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? |
title_full | AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? |
title_fullStr | AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? |
title_full_unstemmed | AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? |
title_short | AlignRT(®), Catalyst™ and RPM™ in locoregional radiotherapy of breast cancer with DIBH. Is IGRT still needed? |
title_sort | alignrt(®), catalyst™ and rpm™ in locoregional radiotherapy of breast cancer with dibh. is igrt still needed? |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9746643/ https://www.ncbi.nlm.nih.gov/pubmed/36523797 http://dx.doi.org/10.5603/RPOR.a2022.0097 |
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