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Evaluation of a Vessel-Tracking-based Technique for Dynamic Targeting in Human Liver
https://repo.qst.go.jp/records/46234
https://repo.qst.go.jp/records/46234de6e48e2-6c73-4b5c-ad2c-f8ce5859e79f
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-12-26 | |||||
| タイトル | ||||||
| タイトル | Evaluation of a Vessel-Tracking-based Technique for Dynamic Targeting in Human Liver | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kokuryo, Daisuke
× Kokuryo, Daisuke× Etsuko, Kumamoto× Takao, Yoshie× Fujii, Susumu× Kaihara, Toshiya× Kuroda, Kagayaki× 國領 大介× 黒田 輝 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The purpose of this study was to evaluate a novel vessel-tracking- based technique for tracking of human liver. The novelty of the proposed technique is that it measures the translation and deformation of a local tissue region based on the displacements of a set of vessels of interest instead of the entire organ. The position of the target point was estimated from the relative positions of the center-of-masses of the vessels, assuming that the topological relationship between the target point and center-ofmasses is unchanged during breathing. To reduce inaccuracy due to the delay between vessel image acquisition and sonication, the near-future target position was predicted based on the vessel displacements in the images extracted from an image library acquired before the tracking stage. Experiments on healthy volunteers demonstrated that regardless of the respiratory condition, appropriate combinations of three center-ofmasses from the vessels situated around the target-tissue position yielded an estimation error of less than 2 mm, which was significantly smaller than that obtained when using a single center- of-mass trio. The effect of the tracking delay was successfully compensated, with a prediction error of less than 3 mm, by using over four images selected from the image library. |
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| 書誌情報 |
Magnetic Resonance in Medicine 巻 67, 号 1, p. 156-163, 発行日 2011-06 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0740-3194 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1002/mrm.23005 | |||||
