講演抄録/キーワード |
講演名 |
2009-01-20 15:05
A new method for region-of-interest image reconstruction in x-ray CT ○Yoshinori Hirabayashi・Koichi Ogawa(Hosei Univ.) MI2008-121 |
抄録 |
(和) |
Region-of-interest (ROI) image reconstruction realizes low dose examinations in an x-ray CT. We proposed a new method for the ROI image reconstruction. In this method we estimated truncated regions in the projection data with the help of measured projections which were multiplied with a confidential weight. Moreover, in the image domain we introduced a correction map which was based on an image reconstructed with truncated projection data. The validity of this method was confirmed with simulations. |
(英) |
Region-of-interest (ROI) image reconstruction realizes low dose examinations in an x-ray CT. We proposed a new method for the ROI image reconstruction. In this method we estimated truncated regions in the projection data with the help of measured projections which were multiplied with a confidential weight. Moreover, in the image domain we introduced a correction map which was based on an image reconstructed with truncated projection data. The validity of this method was confirmed with simulations. |
キーワード |
(和) |
truncated projection / confidential weight / x-ray CT / ROI imaging / / / / |
(英) |
truncated projection / confidential weight / x-ray CT / ROI imaging / / / / |
文献情報 |
信学技報, vol. 108, no. 385, MI2008-121, pp. 279-282, 2009年1月. |
資料番号 |
MI2008-121 |
発行日 |
2009-01-12 (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 |
MI2008-121 |