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First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy
Our institute has constructed a new treatment facility for carbon ion scanning beam therapy. The first clinical trials were successfully completed at the end of November 2011. To evaluate patient setup accuracy, positional errors between the reference Computed Tomography (CT) scan and final patient...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3430428/ https://www.ncbi.nlm.nih.gov/pubmed/22927632 http://dx.doi.org/10.1093/jrr/rrs017 |
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author | Mori, Shinichiro Shibayama, Kouichi Tanimoto, Katsuyuki Kumagai, Motoki Matsuzaki, Yuka Furukawa, Takuji Inaniwa, Taku Shirai, Toshiyuki Noda, Koji Tsuji, Hiroshi Kamada, Tadashi |
author_facet | Mori, Shinichiro Shibayama, Kouichi Tanimoto, Katsuyuki Kumagai, Motoki Matsuzaki, Yuka Furukawa, Takuji Inaniwa, Taku Shirai, Toshiyuki Noda, Koji Tsuji, Hiroshi Kamada, Tadashi |
author_sort | Mori, Shinichiro |
collection | PubMed |
description | Our institute has constructed a new treatment facility for carbon ion scanning beam therapy. The first clinical trials were successfully completed at the end of November 2011. To evaluate patient setup accuracy, positional errors between the reference Computed Tomography (CT) scan and final patient setup images were calculated using 2D-3D registration software. Eleven patients with tumors of the head and neck, prostate and pelvis receiving carbon ion scanning beam treatment participated. The patient setup process takes orthogonal X-ray flat panel detector (FPD) images and the therapists adjust the patient table position in six degrees of freedom to register the reference position by manual or auto- (or both) registration functions. We calculated residual positional errors with the 2D-3D auto-registration function using the final patient setup orthogonal FPD images and treatment planning CT data. Residual error averaged over all patients in each fraction decreased from the initial to the last treatment fraction [1.09 mm/0.76° (averaged in the 1st and 2nd fractions) to 0.77 mm/0.61° (averaged in the 15th and 16th fractions)]. 2D-3D registration calculation time was 8.0 s on average throughout the treatment course. Residual errors in translation and rotation averaged over all patients as a function of date decreased with the passage of time (1.6 mm/1.2° in May 2011 to 0.4 mm/0.2° in December 2011). This retrospective residual positional error analysis shows that the accuracy of patient setup during the first clinical trials of carbon ion beam scanning therapy was good and improved with increasing therapist experience. |
format | Online Article Text |
id | pubmed-3430428 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-34304282012-09-01 First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy Mori, Shinichiro Shibayama, Kouichi Tanimoto, Katsuyuki Kumagai, Motoki Matsuzaki, Yuka Furukawa, Takuji Inaniwa, Taku Shirai, Toshiyuki Noda, Koji Tsuji, Hiroshi Kamada, Tadashi J Radiat Res Technology Our institute has constructed a new treatment facility for carbon ion scanning beam therapy. The first clinical trials were successfully completed at the end of November 2011. To evaluate patient setup accuracy, positional errors between the reference Computed Tomography (CT) scan and final patient setup images were calculated using 2D-3D registration software. Eleven patients with tumors of the head and neck, prostate and pelvis receiving carbon ion scanning beam treatment participated. The patient setup process takes orthogonal X-ray flat panel detector (FPD) images and the therapists adjust the patient table position in six degrees of freedom to register the reference position by manual or auto- (or both) registration functions. We calculated residual positional errors with the 2D-3D auto-registration function using the final patient setup orthogonal FPD images and treatment planning CT data. Residual error averaged over all patients in each fraction decreased from the initial to the last treatment fraction [1.09 mm/0.76° (averaged in the 1st and 2nd fractions) to 0.77 mm/0.61° (averaged in the 15th and 16th fractions)]. 2D-3D registration calculation time was 8.0 s on average throughout the treatment course. Residual errors in translation and rotation averaged over all patients as a function of date decreased with the passage of time (1.6 mm/1.2° in May 2011 to 0.4 mm/0.2° in December 2011). This retrospective residual positional error analysis shows that the accuracy of patient setup during the first clinical trials of carbon ion beam scanning therapy was good and improved with increasing therapist experience. Oxford University Press 2012-09 /pmc/articles/PMC3430428/ /pubmed/22927632 http://dx.doi.org/10.1093/jrr/rrs017 Text en © The Author 2012. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Therapeutic Radiology and Oncology. http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Technology Mori, Shinichiro Shibayama, Kouichi Tanimoto, Katsuyuki Kumagai, Motoki Matsuzaki, Yuka Furukawa, Takuji Inaniwa, Taku Shirai, Toshiyuki Noda, Koji Tsuji, Hiroshi Kamada, Tadashi First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
title | First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
title_full | First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
title_fullStr | First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
title_full_unstemmed | First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
title_short | First clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
title_sort | first clinical experience in carbon ion scanning beam therapy: retrospective analysis of patient positional accuracy |
topic | Technology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3430428/ https://www.ncbi.nlm.nih.gov/pubmed/22927632 http://dx.doi.org/10.1093/jrr/rrs017 |
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