断層像処理装置、X線CT装置およびプログラム

• 收藏
• 分享

专利权人:

ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー

发明人:

今井 靖浩,堀内 哲也

申请号：

JP2008247164

公开号：

JP5317612B2

申请日:

2008.09.26

申请国别(地区):

JP

年份:

2013

代理人:

摘要：

PROBLEM TO BE SOLVED: To suitably perform beam hardening correction when generating tomograms by dual energy photographing.

SOLUTION: On the basis of the ratio of the CT values of corresponding pixels between two kinds of tomograms different in X-ray tube voltage in photographing, a material image corresponding to a predetermined material in the tomograms is extracted (S3), and the extracted material image is virtually projected again (S4). Obtained re-projection data are worked according to the kind of the material and the X-ray tube voltage in photographing (S5), and image reconstitution is performed on the basis of the worked re-projection data (S6). The original tomogram and the newly obtained new material image are subjected to weighted addition to generate a new tomogram (S7). Consequently, the image of the material to be corrected is extracted precisely, and beam hardening correction suitable to the image is suitably performed.

COPYRIGHT: (C)2010,JPO&INPIT

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/