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| Presentation | 2007-10-18 15:15 Calculation of Temperature Rise Inside a Fetus Due to the RF Pulse Radiation During MR Imaging Satoru Kikuchi, Kazuyuki Saito, Masaharu Takahashi, Koichi Ito (Chiba Univ.), Hiroo Ikehira (NIRS)  AP2007-91 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | MRI (Magnetic Resonance Imaging) is one of modalities for diagnosis diseases. Recently, it has been expanded diagnostic subject for MR imaging. As one of the applied examples, there is diagnostics for fetal anomaly. However, basic restriction in the contemporary safety standards for MRI system has not specifically established for the fetus. On the other hand, several studies reported the results that thermal effect for the fetus caused growth delay and developmental defect. According to ICNIRP (International Commission on Non-Ionizing Radiation Protection) statement, it has been suggested that adverse effects on embryonic or fetal development will be avoided if the temperature of the fetus does not exceed 38oC, and the body temperature of pregnant woman does not rise by more than 0.5 oC. In this study, the temperature distribution in the fetus is calculated by use of the numerical calculation model assuming the actual MR imaging and we compared these results with the threshold dose listed in a literature. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Numerical pregnant woman model / FDTD method / MRI / Birdcage coil / Temperature rise / Fetus / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 260, AP2007-91, pp. 25-28, Oct. 2007. | |
| Paper # | AP2007-91 | |
| Date of Issue | 2007-10-11 (AP) | |
| 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 | AP2007-91 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2007-10-18 - 2007-10-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hirosaki Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | etc. |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2007-10-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Calculation of Temperature Rise Inside a Fetus Due to the RF Pulse Radiation During MR Imaging |
| Sub Title (in English) | |
| Keyword(1) | Numerical pregnant woman model |
| Keyword(2) | FDTD method |
| Keyword(3) | MRI |
| Keyword(4) | Birdcage coil |
| Keyword(5) | Temperature rise |
| Keyword(6) | Fetus |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Satoru Kikuchi |
| 1st Author's Affiliation | Chiba University (Chiba Univ.) |
| 2nd Author's Name | Kazuyuki Saito |
| 2nd Author's Affiliation | Chiba University (Chiba Univ.) |
| 3rd Author's Name | Masaharu Takahashi |
| 3rd Author's Affiliation | Chiba University (Chiba Univ.) |
| 4th Author's Name | Koichi Ito |
| 4th Author's Affiliation | Chiba University (Chiba Univ.) |
| 5th Author's Name | Hiroo Ikehira |
| 5th Author's Affiliation | NIRS (NIRS) |
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| Speaker | Author-1 |
| Date Time | 2007-10-18 15:15:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2007-91 |
| Volume (vol) | vol.107 |
| Number (no) | no.260 |
| Page | pp.25-28 |
| #Pages | 4 |
| Date of Issue | 2007-10-11 (AP) |
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