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Paper Abstract and Keywords
Presentation 2025-12-05 09:30
Real-time 3D MRI reconstruction models for radiotherapy using MR-Linac.
Kento Matsumoto, Masato Tsuneda, Kota Abe, Takashi Uno, Hiroki Suyari, Yasukuni Mori (Chiba Univ.) MICT2025-35 MI2025-43
Abstract (in Japanese) (See Japanese page) 
(in English) To further improve the accuracy of MR-guided radiotherapy, it is essential to grasp three-dimensional organ motion in real-time during treatment.
However, intra-treatment cine-MRI is limited to specific 2D slice information, posing a challenge in capturing 3D deformations, including out-of-plane motion.
To address this issue, our study reconstructs 3D-MRI in real-time from cine-MRI information.
Our method employs deep learning to deform the pre-treatment 3D-MRI by referencing the intra-treatment cine-MRI. The resulting deformed images showed an improvement in SSIM from 0.76 to 0.85.
Visual assessment also confirmed that the model accurately reproduced liver motion due to respiration.
Keyword (in Japanese) (See Japanese page) 
(in English) radiation therapy / MRgRT / 3D-MRI reconstruction / cine-MRI / deep learning / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 270, MI2025-43, pp. 14-17, Dec. 2025.
Paper # MI2025-43 
Date of Issue 2025-11-27 (MICT, MI) 
ISSN 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 MICT2025-35 MI2025-43

Conference Information
Committee MICT MI  
Conference Date 2025-12-04 - 2025-12-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Okayama Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Medical imaging technology, healthcare and medical information communication technology, etc. 
Paper Information
Registration To MI 
Conference Code 2025-12-MICT-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Real-time 3D MRI reconstruction models for radiotherapy using MR-Linac. 
Sub Title (in English)  
Keyword(1) radiation therapy  
Keyword(2) MRgRT  
Keyword(3) 3D-MRI reconstruction  
Keyword(4) cine-MRI  
Keyword(5) deep learning  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kento Matsumoto  
1st Author's Affiliation Graduate School of Science and Engineering, Chiba University (Chiba Univ.)
2nd Author's Name Masato Tsuneda  
2nd Author's Affiliation Graduate School of Medicine, Chiba University (Chiba Univ.)
3rd Author's Name Kota Abe  
3rd Author's Affiliation Graduate School of Medicine, Chiba University (Chiba Univ.)
4th Author's Name Takashi Uno  
4th Author's Affiliation Graduate School of Medicine, Chiba University (Chiba Univ.)
5th Author's Name Hiroki Suyari  
5th Author's Affiliation Graduate School of Informatics, Chiba University (Chiba Univ.)
6th Author's Name Yasukuni Mori  
6th Author's Affiliation Graduate School of Informatics, Chiba University (Chiba Univ.)
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Speaker Author-1 
Date Time 2025-12-05 09:30:00 
Presentation Time 20 minutes 
Registration for MI 
Paper # MICT2025-35, MI2025-43 
Volume (vol) vol.125 
Number (no) no.269(MICT), no.270(MI) 
Page pp.14-17 
#Pages 4 
Date of Issue 2025-11-27 (MICT, MI) 

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