| Presentation | 2012-01-20 Development of a lymph node detection method from 3D abdominal CT images using multi shape ellipsoidal structure detection filter Masahiro ODA, Takayuki KITASAKA, Michitaka FUJIWARA, Kazunari MISAWA, Kensaku MORI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a lymph node detection method which utilizing a multi-shape and multi-scale ellipsoidal structure detection filter. Detection of the enlarged lymph nodes is required in diagnosis of metastatic cancer using a computer aided diagnosis system. Automated detection of the enlarged lymph nodes improves efficiency of cancer diagnosis. This paper describes a method for detecting gastric lymph nodes from abdominal CT images. In CT images, the lymph node has higher CT values than the surrounding regions. Shapes of the lymph nodes are sphere or ellipsoid. We utilized a multi-shape and multi-scale ellipsoidal structure detection filter based on local intensity structure analysis to detect the lymph nodes. A Hessian matrix is calculated from a polynomial which approximates a local CT value structure. We utilize three eigenvalues of the Hessian matrix in the detection filter. In a ellipsoidal structure, values of the eigenvalues correspond lengths of the long and short axes of the ellipsoidal structure. The detection filter outputs high values if the eigenvalues take particular values of the ellipsoidal structure. Experimental results using 6 cases of CT images showed that our method can detect 69.2% of lymph nodes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CT image / lymph node detection / stomach / ellipsoidal structure detection filter |
| Paper # | MI2011-123 |
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| Conference Information | |
| Committee | MI |
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| Conference Date | 2012/1/12(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) | Development of a lymph node detection method from 3D abdominal CT images using multi shape ellipsoidal structure detection filter |
| Sub Title (in English) | |
| Keyword(1) | CT image |
| Keyword(2) | lymph node detection |
| Keyword(3) | stomach |
| Keyword(4) | ellipsoidal structure detection filter |
| 1st Author's Name | Masahiro ODA |
| 1st Author's Affiliation | Graduate School of Information Science, Nagoya University() |
| 2nd Author's Name | Takayuki KITASAKA |
| 2nd Author's Affiliation | Faculty of Information Science, Aichi Institute of Technology |
| 3rd Author's Name | Michitaka FUJIWARA |
| 3rd Author's Affiliation | Graduate School of Medicine, Nagoya University |
| 4th Author's Name | Kazunari MISAWA |
| 4th Author's Affiliation | Aichi Cancer Center |
| 5th Author's Name | Kensaku MORI |
| 5th Author's Affiliation | Graduate School of Information Science, Nagoya University:Information Strategy Office, Information and Communications Headquarters, Nagoya University |
| Date | 2012-01-20 |
| Paper # | MI2011-123 |
| Volume (vol) | vol.111 |
| Number (no) | 389 |
| Page | pp.pp.- |
| #Pages | 6 |
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