Invention Grant
- Patent Title: X-ray CT apparatus and image reconstruction method
- Patent Title (中): X射线CT装置及图像重建方法
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Application No.: US14372250Application Date: 2013-03-18
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Publication No.: US09406121B2Publication Date: 2016-08-02
- Inventor: Taiga Goto , Hisashi Takahashi , Koichi Hirokawa
- Applicant: HITACHI MEDICAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: HITACHI MEDICAL CORPORATION
- Current Assignee: HITACHI MEDICAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2012-098374 20120424
- International Application: PCT/JP2013/057583 WO 20130318
- International Announcement: WO2013/161443 WO 20131031
- Main IPC: G06T7/00
- IPC: G06T7/00 ; G06T11/00 ; G06T5/00 ; A61B6/03 ; A61B6/00

Abstract:
To generate a reconstructed image suitable to characteristics of a bilaterally symmetric site and possible to an appropriate image diagnosis, a computation device: computes a back projection phase width at a rotational center and distance between the rotational center location which is a reference location and a pixel to be reconstructed; according to the distance between the rotational center location and the pixel to be reconstructed, sets a function (f1) changing the back projection phase width; computes a back projection phase width in the pixel to be reconstructed, substituting a value of the distance between the rotational center location and a pixel to be reconstructed in the function (f1); computes a view weighting, on the basis of the back projection phase width in the post-correction pixel to be reconstructed and a slope width of a view weighting function; and reconstructs a CT image, using the view weighting.
Public/Granted literature
- US20150093003A1 X-RAY CT APPARATUS AND IMAGE RECONSTRUCTION METHOD Public/Granted day:2015-04-02
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