Title:
PROGRAM, RECONSTRUCTION DEVICE AND TOMOGRAPHY APPARATUS
Document Type and Number:
Japanese Patent JP2015093184
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a successive approximation method allowing excellent reconstruction even if a subject protrudes from a reconstruction a region.SOLUTION: A program converts transmission data into measurement projection data of each view that is a set of a plurality of radiation paths, sets an initial reconstruction image to a reconstruction region set on a cross section of a subject 3, reprojects the reconstruction image in a view unit to create reprojection data, takes a difference between the reprojection data and the measurement projection data to create difference data, applies |ω| filtering to the difference data, performs back projection of the difference data applied with the |ω| filtering onto the reconstruction image, and repeats the reprojection and the back projection in a state that the view is changed to update the reconstruction image to set it as a cross-sectional image of the subject 3.
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Inventors:
UYAMA KIICHIRO
Application Number:
JP2013245419A
Publication Date:
May 18, 2015
Filing Date:
November 11, 2013
Export Citation:
Assignee:
TOSHIBA IT & CONTROL SYS CORP
International Classes:
A61B6/03
Domestic Patent References:
| JP2013085960A | 2013-05-13 | |||
| JP2005265618A | 2005-09-29 | |||
| JP2013101055A | 2013-05-23 | |||
| JP2013141608A | 2013-07-22 |
Foreign References:
| WO2005055829A1 | 2005-06-23 |