| Presentation | 2016-01-19 Source Localization in Remote After Loading System Using CT Image and Radiograph Yuki Miyajima, Takayuki Kanai, Koji Suzuki, Satoshi Saito, Tetsuya Yuasa, Kenji Nemoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | RALS (Remote After Loading System) which is a kind of radiation therapy are widely applied to the treatment for cervical cancer. In RALS, first a pipe called an applicator is inserted along the cavity within a tubular organ such as esoghagus and uterus from outside a body so that its head is positioned on the tumor region, and then a wire with a radiation source mounted on its tip is inserted through the applicator to irradiate the tumor region. If the wire tip is positioned away from the tumor region, the normal tissues are damaged by radiation. In this study, in order to avoid the risk, we considered a method to estimate the irradiation position using a preoperatively acquired computed tomography (CT) image for radiation treatment planning and an intraoperatively acquired radiograph. We registered the projection image generated from the CT image with the actual radiograph based on the position of Pb markers using a rigid body transformation to estimate the difference between planned source position and actual source position. We demonstrated the efficacy using simulated images generated form an actual clinical CT and actual images acquired from a physical phantom. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | remote afterloading system(RALS) / computed tomography(CT) / radiograph / registration |
| Paper # | MI2015-87 |
| Date of Issue | 2016-01-12 (MI) |
| Conference Information | |
| Committee | MI |
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| Conference Date | 2016/1/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Bunka Tenbusu Kan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General topics in medical imaging |
| Chair | Yoshitaka Masutani(Hiroshima City Univ.) |
| Vice Chair | Yoshiki Kawata(Tokushima Univ.) / Yuichi Kimura(Kinki Univ.) |
| Secretary | Yoshiki Kawata(Aichi Inst. of Tech.) / Yuichi Kimura(Nagoya Inst. of Tech.) |
| Assistant | Ryo Haraguchi(NCVC) / Yasushi Hirano(Yamaguchi Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Medical Imaging |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Source Localization in Remote After Loading System Using CT Image and Radiograph |
| Sub Title (in English) | |
| Keyword(1) | remote afterloading system(RALS) |
| Keyword(2) | computed tomography(CT) |
| Keyword(3) | radiograph |
| Keyword(4) | registration |
| 1st Author's Name | Yuki Miyajima |
| 1st Author's Affiliation | yamagata university(yamagata univ.) |
| 2nd Author's Name | Takayuki Kanai |
| 2nd Author's Affiliation | yamagata university(yamagata univ.) |
| 3rd Author's Name | Koji Suzuki |
| 3rd Author's Affiliation | yamagata university(yamagata univ.) |
| 4th Author's Name | Satoshi Saito |
| 4th Author's Affiliation | Toshiba medical systems corporation(Toshiba medical systems) |
| 5th Author's Name | Tetsuya Yuasa |
| 5th Author's Affiliation | yamagata university(yamagata univ.) |
| 6th Author's Name | Kenji Nemoto |
| 6th Author's Affiliation | yamagata university(yamagata univ.) |
| Date | 2016-01-19 |
| Paper # | MI2015-87 |
| Volume (vol) | vol.115 |
| Number (no) | MI-401 |
| Page | pp.pp.75-80(MI), |
| #Pages | 6 |
| Date of Issue | 2016-01-12 (MI) |