| Presentation | 2017-06-27 Estimation of transmit-receive response and its application to method for improvement of range spatial resolution Michiya Mozumi, Hideyuki Hasegawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The range spatial resolution is one of the elements which is related to an image quality in the ultrasonic imaging. We developed a filter based on the maximum likelihood (ML) estimation of the distribution of ultrasonic scattering strength for improvement of the range spatial resolution of a B-mode image. Although the range spatial resolution was improved by using the proposed ML filter, its performance might depend on the propagation medium of an imaging target. The goal of this study is the improvement of the performance of the proposed filter in terms of the range spatial resolution and the penetration. In the present study, the transmit-receive response of an ultrasound imaging system, which is included in a discrete echo signal model, was estimated using echo signals obtained from an imaging target. In addition, transmit-receive responses were computed region by region in the range direction to consider the change in the ultrasonic waveform due to the frequency dependent attenuation of the propagation medium. The estimated transmit-receive response was used for the corresponding region. The performance of the proposed method was evaluated by comparing a B-mode image of a phantom obtained with the proposed method to that obtained with the conventional method. The results showed that the axial half maximum of an echo from a fine wire was smaller than that obtained with the conventional method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ultrasound / range spatial resolution / maximum-likelihood estimation / scattering strength |
| Paper # | US2017-23 |
| Date of Issue | 2017-06-20 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2017/6/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Minoru Kurosawa(Tokyo Inst. of Tech.) |
| Vice Chair | Nobuyuki Endoh(KU) / Shinichi Takeuchi(Toin Univ. of Yokohama) |
| Secretary | Nobuyuki Endoh(Univ. of Toyama) / Shinichi Takeuchi(Univ. of Tokyo) |
| Assistant | Takenobu Tsuchiya(KU) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of transmit-receive response and its application to method for improvement of range spatial resolution |
| Sub Title (in English) | |
| Keyword(1) | ultrasound |
| Keyword(2) | range spatial resolution |
| Keyword(3) | maximum-likelihood estimation |
| Keyword(4) | scattering strength |
| 1st Author's Name | Michiya Mozumi |
| 1st Author's Affiliation | University of Toyama(Univ. of Toyama) |
| 2nd Author's Name | Hideyuki Hasegawa |
| 2nd Author's Affiliation | University of Toyama(Univ. of Toyama) |
| Date | 2017-06-27 |
| Paper # | US2017-23 |
| Volume (vol) | vol.117 |
| Number (no) | US-111 |
| Page | pp.pp.13-17(US), |
| #Pages | 5 |
| Date of Issue | 2017-06-20 (US) |