講演抄録/キーワード |
講演名 |
2008-01-25 16:35
CBCT画像のリングアーファクト除去 ○段 桂芳・陳 延偉・韓 先花(立命館大)・藤田明徳・廣岡 研・上野功裕(島津製作所) MI2007-105 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
Cone-beam CT (CBCT) scanners are based on volumetric tomography, using a 2D extended digital array providing an area detector [1]. Compared to traditional CT, CBCT has many advantages, such as less X-ray beam limitation, high image accuracy, Rapid scan time, etc. However, In CBCT images there are always some ring artifacts that appear as rings centred on the rotation axis. Due to the data of the constructed images are corrupted by these ring artifacts, qualitative and quantitative analysis of CBCT images will be compromised. Post processing and application such as image segmentation and registration also turn more complex as the presence of such artifacts. In this paper, a method with a novel region of interest (ROI) building technique is presented. It deals with the reconstructed CBCT image and can effectively reduce such ring artifacts. |
キーワード |
(和) |
/ / / / / / / |
(英) |
CBCT images / ring artifact reduction / region of interest / mean filter / / / / |
文献情報 |
信学技報, vol. 107, no. 461, MI2007-105, pp. 227-233, 2008年1月. |
資料番号 |
MI2007-105 |
発行日 |
2008-01-18 (MI) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
MI2007-105 |
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