| Presentation | 2017-09-15 Posterior Mean Approximate Estimate Considering Uncertainty of Sensitivity Map in CS-SENSE Ken Harada, Masato Inoue, Kaori Togashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Posterior mean (PM) estimation is generally more accurate than maximum a posteriori probability (MAP) estimation when we adopt the squared error for the accuracy evaluation of the estimated image and the true image. However, in rapid MR image reconstruction, a simple MAP solution is often substituted. In this research, we extend the CS-SENSE method by using not a single but multiple sensitivity maps with a variety of resolutions, and construct a model that approximates the PM solution by linear combination of MAP solutions corresponding to each sensitivity map. The connection weights (non-negative real values) are learned from the correct images, and they became sparse. As a result, we achieved 40% improvement over MAP solution. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Rapid MR Imaging / Compressed Sensing / CS-SENSE / Posterior Mean Estimate |
| Paper # | PRMU2017-49,IBISML2017-21 |
| Date of Issue | 2017-09-08 (PRMU, IBISML) |
| Conference Information | |
| Committee | PRMU / IBISML / IPSJ-CVIM |
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| Conference Date | 2017/9/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Sato(NII) / Kenji Fukumizu(ISM) |
| Vice Chair | Hironobu Fujiyoshi(Chubu Univ.) / Yoshihisa Ijiri(Omron) / Masashi Sugiyama(Univ. of Tokyo) |
| Secretary | Hironobu Fujiyoshi(AIST) / Yoshihisa Ijiri(NAIST) / Masashi Sugiyama(Kyoto Univ.) / (Univ. of Tokyo) |
| Assistant | Masato Ishii(NEC) / Yusuke Sugano(Osaka Univ.) / Ichiro Takeuchi(Nagoya Inst. of Tech.) / Toshihiro Kamishima(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Pattern Recognition and Media Understanding / Technical Committee on Infomation-Based Induction Sciences and Machine Learning / Special Interest Group on Computer Vision and Image Media |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Posterior Mean Approximate Estimate Considering Uncertainty of Sensitivity Map in CS-SENSE |
| Sub Title (in English) | |
| Keyword(1) | Rapid MR Imaging |
| Keyword(2) | Compressed Sensing |
| Keyword(3) | CS-SENSE |
| Keyword(4) | Posterior Mean Estimate |
| 1st Author's Name | Ken Harada |
| 1st Author's Affiliation | Waseda University(Waseda Univ.) |
| 2nd Author's Name | Masato Inoue |
| 2nd Author's Affiliation | Waseda University(Waseda Univ.) |
| 3rd Author's Name | Kaori Togashi |
| 3rd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2017-09-15 |
| Paper # | PRMU2017-49,IBISML2017-21 |
| Volume (vol) | vol.117 |
| Number (no) | PRMU-210,IBISML-211 |
| Page | pp.pp.75-82(PRMU), pp.75-82(IBISML), |
| #Pages | 8 |
| Date of Issue | 2017-09-08 (PRMU, IBISML) |