Title:
X-RAY CT PHOTOGRAPHING METHOD AND APPARATUS THEREFOR
Document Type and Number:
Japanese Patent JP3929217
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an X-ray CT photographing method capable of removing a virtual image due to a metallic artifact and obtaining an image of X-ray absorption coefficient distribution information capable of withstanding diagnosis even when there is an implant.
SOLUTION: A metallic part is sampled treated from an original image X1 of X-ray absorption coefficient distribution information obtained by filtering, treating, and projecting reversely an original X-ray projected image obtained by irradiating X-ray by turning an X-ray generator for an object to be photographed, and a compensated X-ray projected image X2 obtained by overlapping a calculated projected image XM of the metallic part on the original X-ray projected image is filtered, treated, and projected reversely again to obtain an image X3 of X-ray absorption coefficient distribution information of the object.
Inventors:
Yoshinori Arai
Masakazu Suzuki
Masakazu Suzuki
Application Number:
JP2000003651A
Publication Date:
June 13, 2007
Filing Date:
January 12, 2000
Export Citation:
Assignee:
NIHON UNIVERSITY
Morita Manufacturing Co., Ltd.
Morita Manufacturing Co., Ltd.
International Classes:
A61B6/03; A61B6/14; (IPC1-7): A61B6/14; A61B6/03
Domestic Patent References:
| JP2195944A | ||||
| JP3103243A | ||||
| JP10337287A |
Attorney, Agent or Firm:
Hiroyuki Nakai
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