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| Presentation | 2016-03-23 10:25 Modulation transfer function measurement of CT images reconstructed by a hard kernel Jo Mitsuzuka, Kazuhiro Sawa, Yoshinori Takehana, Akihiro Tanaka, Kentaro Kinoshita, Satoru Kishida (Tottori Univ.)  NC2015-80 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To develop MTF(Modulation Transfer Function) measurement of CT images reconstructed by a hard kernel filter, we proposed a method to eliminate noise by fitting a logistic curve. In previous studies, spatial resolution was measured with consideration of shape of undershoot and overshoot to regard raw data. In this study, we focused on minimum point and maximum point of an edge to fit a logistic curve, and measured essential spatial resolution by the fitted logistic curve. The logistic curve was accurately fitted to raw data in ESF compared to the curve fitted to LSF with a derivative of a logistic curve. It became clear that the spatial resolution of images reconstructed by a hard kernel filter is superior than that of soft kernel. Also, we found that the edge parameter of logistic curve affects extremely to MTF comparison of the parameter of CT value in background and subject. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Modulation Transfer Function (MTF) / logistic curve / Computed Tomography (CT) / Edge Spread Function (ESF) / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 514, NC2015-80, pp. 59-63, March 2016. | |
| Paper # | NC2015-80 | |
| Date of Issue | 2016-03-15 (NC) | |
| 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 | NC2015-80 |
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| Conference Information | |
| Committee | MBE NC |
| Conference Date | 2016-03-22 - 2016-03-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tamagawa University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2016-03-MBE-NC |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Modulation transfer function measurement of CT images reconstructed by a hard kernel |
| Sub Title (in English) | |
| Keyword(1) | Modulation Transfer Function (MTF) |
| Keyword(2) | logistic curve |
| Keyword(3) | Computed Tomography (CT) |
| Keyword(4) | Edge Spread Function (ESF) |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Jo Mitsuzuka |
| 1st Author's Affiliation | Tottori University (Tottori Univ.) |
| 2nd Author's Name | Kazuhiro Sawa |
| 2nd Author's Affiliation | Tottori University (Tottori Univ.) |
| 3rd Author's Name | Yoshinori Takehana |
| 3rd Author's Affiliation | Tottori University (Tottori Univ.) |
| 4th Author's Name | Akihiro Tanaka |
| 4th Author's Affiliation | Tottori University (Tottori Univ.) |
| 5th Author's Name | Kentaro Kinoshita |
| 5th Author's Affiliation | Tottori University (Tottori Univ.) |
| 6th Author's Name | Satoru Kishida |
| 6th Author's Affiliation | Tottori University (Tottori Univ.) |
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| Speaker | Author-1 |
| Date Time | 2016-03-23 10:25:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2015-80 |
| Volume (vol) | vol.115 |
| Number (no) | no.514 |
| Page | pp.59-63 |
| #Pages | 5 |
| Date of Issue | 2016-03-15 (NC) |
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