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| Presentation | 2013-11-07 10:00 Development of automated estimation of four-dimensional dose distributions based on a 2D/3D registration during a high precision radiotherapy Takahiro Nakamoto, Hidetaka Arimura, Katsumasa Nakamura (Kyushu Univ.), Yoshiyuki Shioyama (Saga HIMAT), Asumi Mizoguchi (Kurume Univ. Hospital), Taka-aki Hirose (Kyushu Univ. Hospital), Hiroshi Honda (Kyushu Univ.), Yoshiyuki Umedu, Yasuhiko Nakamura (Kyushu Univ. Hospital), Hideki Hirata (Kyushu Univ.)  MI2013-46 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The purpose of this study was to develop an estimation method of four-dimensional (4D) dose distributions during radiotherapy based on a 2D/3D registration. “Treatment” computed tomography (CT) images were estimated by deforming three-dimensional (3D) planning CT images by using affine transformation matrices so that a two-dimensional (2D) planning portal dose image (PDI) can be similar to a certain time 2D dynamic clinical PDI. The planning PDI was calculated by applying a dose calculation method (convolution algorithm) to a geometry of the planning CT image and a virtual water phantom. The dynamic clinical PDI was estimated from electronic portal imaging device (EPID) dynamic image acquired during a treatment time. The parameters of affine transformation matrices were optimized by a Levenberg-Marquardt (LM) algorithm. Finally, the 4D dose distributions during the treatment time were calculated by applying the dose calculation method to the simulated 4D “treatment” CT images. The proposed method might be useful for assessment of the outcomes and risk management. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | High precision radiotherapy / CT images / 4D dose distributions / 2D/3D registration / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 281, MI2013-46, pp. 5-10, Nov. 2013. | |
| Paper # | MI2013-46 | |
| Date of Issue | 2013-10-31 (MI) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MI2013-46 |
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| Conference Information | |
| Committee | MI |
| Conference Date | 2013-11-07 - 2013-11-07 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MI |
| Conference Code | 2013-11-MI |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of automated estimation of four-dimensional dose distributions based on a 2D/3D registration during a high precision radiotherapy |
| Sub Title (in English) | |
| Keyword(1) | High precision radiotherapy |
| Keyword(2) | CT images |
| Keyword(3) | 4D dose distributions |
| Keyword(4) | 2D/3D registration |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takahiro Nakamoto |
| 1st Author's Affiliation | Kyushu University (Kyushu Univ.) |
| 2nd Author's Name | Hidetaka Arimura |
| 2nd Author's Affiliation | Kyushu University (Kyushu Univ.) |
| 3rd Author's Name | Katsumasa Nakamura |
| 3rd Author's Affiliation | Kyushu University (Kyushu Univ.) |
| 4th Author's Name | Yoshiyuki Shioyama |
| 4th Author's Affiliation | Saga Heavy Ion Medical Accelerator in Tosu (Saga HIMAT) |
| 5th Author's Name | Asumi Mizoguchi |
| 5th Author's Affiliation | Kurume University Hospital (Kurume Univ. Hospital) |
| 6th Author's Name | Taka-aki Hirose |
| 6th Author's Affiliation | Kyushu University Hospital (Kyushu Univ. Hospital) |
| 7th Author's Name | Hiroshi Honda |
| 7th Author's Affiliation | Kyushu University (Kyushu Univ.) |
| 8th Author's Name | Yoshiyuki Umedu |
| 8th Author's Affiliation | Kyushu University Hospital (Kyushu Univ. Hospital) |
| 9th Author's Name | Yasuhiko Nakamura |
| 9th Author's Affiliation | Kyushu University Hospital (Kyushu Univ. Hospital) |
| 10th Author's Name | Hideki Hirata |
| 10th Author's Affiliation | Kyushu University (Kyushu Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-11-07 10:00:00 |
| Presentation Time | 30 minutes |
| Registration for | MI |
| Paper # | MI2013-46 |
| Volume (vol) | vol.113 |
| Number (no) | no.281 |
| Page | pp.5-10 |
| #Pages | 6 |
| Date of Issue | 2013-10-31 (MI) |
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