| Presentation | 2005-01-21 Non-linear motion correction of respiratory-gated SPECT image Hidenori Ue, Hideaki Haneishi, Hideyuki Iwanaga, Yona Ooishi, Ryoko Ide, Masahiro Koike, Kazuyoshi Suga, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Respiratory-gated SPECT is effective for avoiding blur of a reconstructed image which is caused by the respiratory motion of the lung during the acquisition. However, if the acquisition time is not long enough, the reconstructed image becomes noisy. In order to prevent blur and noises, we propose a method that synthesizes each phase images after the motion correction of the lung. In this method, an objective function consisting of both the degree of similarity between a reference and a deformed image and the smoothness of deformation is defined and it is optimized using simulated annealing. Furthermore, expansion ratio is introduced for corresponding to the change of the density of tracer particles. As a result of experiments, the respiratory motion was corrected and less blurred and less noisy SPECT images were obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Respiratory-gated SPECT / Non-linear motion correction / Objective function / Simulated annealing |
| Paper # | MI2004-56 |
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| Conference Information | |
| Committee | MI |
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| Conference Date | 2005/1/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Medical Imaging (MI) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Non-linear motion correction of respiratory-gated SPECT image |
| Sub Title (in English) | |
| Keyword(1) | Respiratory-gated SPECT |
| Keyword(2) | Non-linear motion correction |
| Keyword(3) | Objective function |
| Keyword(4) | Simulated annealing |
| 1st Author's Name | Hidenori Ue |
| 1st Author's Affiliation | School of Science and Technology, Chiba University() |
| 2nd Author's Name | Hideaki Haneishi |
| 2nd Author's Affiliation | School of Science and Technology, Chiba University:Research Center for Frontier Medical Engineering, Chiba University |
| 3rd Author's Name | Hideyuki Iwanaga |
| 3rd Author's Affiliation | Department of Radiology, Yamaguchi University |
| 4th Author's Name | Yona Ooishi |
| 4th Author's Affiliation | Department of Radiology, Yamaguchi University |
| 5th Author's Name | Ryoko Ide |
| 5th Author's Affiliation | Department of Radiology, Yamaguchi University |
| 6th Author's Name | Masahiro Koike |
| 6th Author's Affiliation | Department of Radiology, Yamaguchi University |
| 7th Author's Name | Kazuyoshi Suga |
| 7th Author's Affiliation | Department of Radiology, Yamaguchi University |
| Date | 2005-01-21 |
| Paper # | MI2004-56 |
| Volume (vol) | vol.104 |
| Number (no) | 579 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |