X線コンピュータ断層撮像装置(X線CT装置)及びX線コンピュータ断層撮像装置の作動方法

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专利权人:

東芝メディカルシステムズ株式会社

发明人:

アレキサンダー・ザミャチン,トーマス・ラブノー

申请号：

JP2012227969

公开号：

JP6139091B2

申请日:

2012.10.15

申请国别(地区):

JP

年份:

2017

代理人:

摘要：

Streak artifacts arise in helical CT reconstruction with cone beam weighting (CBW) with helical pitch ratio between 0.5 and 1.0 in a prevalent 2PI mode. The sreak artifacts are substantially removed by applying upsampling to the measured data in the segment direction before weighting. Furthermore, by making the upsampling adaptive to the view Z-position, an amount of extra processing is greatly reduced to near 1%.

来源网站：

中国工程科技知识中心

来源网址：

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