| Presentation | 2012-02-10 A study on automated extraction of lymph nodes from two-phase 3D contrasted chest CT images Mitsuhiro KISHIMOTO, Yukitaka NIMURA, Masahiro ODA, Takayuki KITASAKA, Shingo IWANO, Kensaku MORI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we present a method for automated extraction of lymph nodes from 3D contrasted chest CT images taken in early- and late-phases. Image diagnoses of the lymph node metastases are quite important in lung cancer treatments. Automated extraction of lymph nodes from chest CT images by computers is expected to be developed. The previous extraction methods caused a lot of FPs (false positive) due to inadequate target processing regions and insufficient FP reduction processes. We extract lymph node candidates roughly by using the intensity features of the two-phase 3D contrasted chest CT images. We reduce FPs of the lymph node candidates based on the information of the smallest and longest axes of the candidates after processing by a region growing process. We evaluate our method using 42 cases of CT image pairs. The extraction results are compared with diagnosis results by a radiologist. Experimental results showed that the recall and precision rate of the extracted regions were 69.9% and 58.4%, respectively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Chest CT image / lymph nodes / computer assisted detection / local intensity structure analysis / region growing |
| Paper # | PRMU2011-237,SP2011-152 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 2012/2/2(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on automated extraction of lymph nodes from two-phase 3D contrasted chest CT images |
| Sub Title (in English) | |
| Keyword(1) | Chest CT image |
| Keyword(2) | lymph nodes |
| Keyword(3) | computer assisted detection |
| Keyword(4) | local intensity structure analysis |
| Keyword(5) | region growing |
| 1st Author's Name | Mitsuhiro KISHIMOTO |
| 1st Author's Affiliation | Graduate School of Information Science, Nagoya University() |
| 2nd Author's Name | Yukitaka NIMURA |
| 2nd Author's Affiliation | Strategy Office, Information and Communications Headquarters, Nagoya University |
| 3rd Author's Name | Masahiro ODA |
| 3rd Author's Affiliation | Graduate School of Information Science, Nagoya University |
| 4th Author's Name | Takayuki KITASAKA |
| 4th Author's Affiliation | School of Information Science, Aichi Institute of Technology |
| 5th Author's Name | Shingo IWANO |
| 5th Author's Affiliation | Graduate School of Medicine, Nagoya University |
| 6th Author's Name | Kensaku MORI |
| 6th Author's Affiliation | Strategy Office, Information and Communications Headquarters, Nagoya University:Graduate School of Information Science, Nagoya University |
| Date | 2012-02-10 |
| Paper # | PRMU2011-237,SP2011-152 |
| Volume (vol) | vol.111 |
| Number (no) | 431 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |