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| Presentation | 2010-01-29 11:40 [Poster Presentation] Comparison of Inversion Algorithm for Magnetic Resonance Elastography -- Availability for Focused Acoustic Driver -- Hisayuki Miura, Mikio Suga (Chiba Univ.), Hiroshi Fujiwara (Kyoto Univ.), Takao Yamamoto (Gunma Univ.), Masaya Hirano (GE Healthcare Japan), Hiroo Ikehira, Takayuki Obata (National Inst. of Radiological Sci.)  MI2009-142 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The stiffness of tissue is related to physiological and pathological state. Magnetic resonance elastography (MRE) is a technique that can noninvasively visualize shear waves patterns within tissue with a modified phase-contrast MR sequence. In order to generate shear waves in deep region of tissue, we have used a focused acoustic driver. The shear waves generated by the focused acoustic driver make complex shear waves in deep region. There are three types of inversion algorithms, local frequency estimation (LFE), direct inversion (DI) and integral type reconstruction formula (ITRF) which are applicable noisy shear wave images and estimate the shear modulus quantitatively. The purpose of this work is to show that the most suitable inversion algorithms for noisy complex shear wave images. From the results of the phantom study, we result that ITRF with integral type curl-operator is the most suitable inversion algorithms for the focused acoustic driver. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | magnetic resonance elastography (MRE) / MRI / viscoelasticity / inversion algorithms / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 407, MI2009-142, pp. 357-360, Jan. 2010. | |
| Paper # | MI2009-142 | |
| Date of Issue | 2010-01-21 (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 | MI2009-142 |
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| Conference Information | |
| Committee | MI |
| Conference Date | 2010-01-28 - 2010-01-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Naha-Bunka-Tenbusu |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Medical Imaging |
| Paper Information | |
| Registration To | MI |
| Conference Code | 2010-01-MI |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Comparison of Inversion Algorithm for Magnetic Resonance Elastography |
| Sub Title (in English) | Availability for Focused Acoustic Driver |
| Keyword(1) | magnetic resonance elastography (MRE) |
| Keyword(2) | MRI |
| Keyword(3) | viscoelasticity |
| Keyword(4) | inversion algorithms |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hisayuki Miura |
| 1st Author's Affiliation | Chiba University (Chiba Univ.) |
| 2nd Author's Name | Mikio Suga |
| 2nd Author's Affiliation | Chiba University (Chiba Univ.) |
| 3rd Author's Name | Hiroshi Fujiwara |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 4th Author's Name | Takao Yamamoto |
| 4th Author's Affiliation | Gunma University (Gunma Univ.) |
| 5th Author's Name | Masaya Hirano |
| 5th Author's Affiliation | GE Healthcare Japan (GE Healthcare Japan) |
| 6th Author's Name | Hiroo Ikehira |
| 6th Author's Affiliation | National Institute of Radiological Sciences (National Inst. of Radiological Sci.) |
| 7th Author's Name | Takayuki Obata |
| 7th Author's Affiliation | National Institute of Radiological Sciences (National Inst. of Radiological Sci.) |
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| Speaker | Author-1 |
| Date Time | 2010-01-29 11:40:00 |
| Presentation Time | 30 minutes |
| Registration for | MI |
| Paper # | MI2009-142 |
| Volume (vol) | vol.109 |
| Number (no) | no.407 |
| Page | pp.357-360 |
| #Pages | 4 |
| Date of Issue | 2010-01-21 (MI) |
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