| Presentation | 2004/1/18 Description of Density Transition for Multi Phase X-ray CT images and Its Application to Automated Extraction of Liver Tumor Regions (Medical Imaging)) Shigeto WATANABE, Fumie SHIGEYAMA, Jun-ichi HASEGAWA, Yoshito MEKADA, Junichiro TORIWAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we present a way for description of density transition for multi phase X-ray CT images and its application to automated extraction of liver tumor regions. First, each normalized CT value in the image is classified into three density states (high, middle and low states). Then a vector called "transition pattern of density state" is defined by sequence of density states obtained from corresponding points in all phase images. Using this transition pattern, we developed a procedure for extraction of liver tumor region. This procedure consists of following five steps ; (1) extraction of liver regions, (2) normalization of CT values, (3) generation of density state transition pattern, (4) extraction of candidate tumor region and (5) discrimination of tumor regions. In the experiment using nine practical abdominal CT images, very promising results were obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multi phase X-ray CT images / transition pattern of density state / abdominal CT image / computer aided diagnosis / liver |
| Paper # | MI2003-106 |
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| Committee | MI |
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| Conference Date | 2004/1/18(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) | Description of Density Transition for Multi Phase X-ray CT images and Its Application to Automated Extraction of Liver Tumor Regions (Medical Imaging)) |
| Sub Title (in English) | |
| Keyword(1) | multi phase X-ray CT images |
| Keyword(2) | transition pattern of density state |
| Keyword(3) | abdominal CT image |
| Keyword(4) | computer aided diagnosis |
| Keyword(5) | liver |
| 1st Author's Name | Shigeto WATANABE |
| 1st Author's Affiliation | Graduate School of Computer and Cognitive Sciences, Chukyo University() |
| 2nd Author's Name | Fumie SHIGEYAMA |
| 2nd Author's Affiliation | School of Computer and Cognitive Sciences, Chukyo University |
| 3rd Author's Name | Jun-ichi HASEGAWA |
| 3rd Author's Affiliation | Graduate School of Computer and Cognitive Sciences, Chukyo University:School of Computer and Cognitive Sciences, Chukyo University |
| 4th Author's Name | Yoshito MEKADA |
| 4th Author's Affiliation | Graduate School of Information Science |
| 5th Author's Name | Junichiro TORIWAKI |
| 5th Author's Affiliation | Graduate School of Computer and Cognitive Sciences, Chukyo University:School of Computer and Cognitive Sciences, Chukyo University |
| Date | 2004/1/18 |
| Paper # | MI2003-106 |
| Volume (vol) | vol.103 |
| Number (no) | 599 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |