Title:
VIRTUAL GRID IMAGING METHOD FOR BEING CAPABLE OF ELIMINATING THE EFFECT OF SCATTER RADIATION AND SYSTEM THEREOF
Document Type and Number:
WIPO Patent Application WO/2008/058442
Kind Code:
A1
Abstract:
A virtual grid imaging method being capable of eliminating the effect of scatter radiation
in the high energy radiation imaging, which does not filter the scatter that arrives
at the detector surface at first, but samples all the data of the scatter and the
straight radiation, and then separates and suppresses the scatter component of
the data being sampled, in order to achieve the purpose of eliminating the scatter component
in the image being acquired. The method comprises the steps of (1) discomposing the
digital image acquired into images of multi-frequency from the high frequency to
the low frequency, according the frequency thereof; (2) performing a process of
eliminating scatter to the image of low frequency; (3) performing a process of
contrast enhancing to the image of high frequency; (4) combining the images of
individual frequency being processed in step (2) and (3) to form an output image. A
virtual grid imaging system for being capable of eliminating the effect of scatter radiation
is also provided.
Inventors:
LI YUNXIANG (CN)
CAO HONGGUANG (CN)
CAO HONGGUANG (CN)
Application Number:
PCT/CN2007/001817
Publication Date:
May 22, 2008
Filing Date:
June 08, 2007
Export Citation:
Assignee:
BEIJING SINOPHARM HUNDRIC MEDL (CN)
LI YUNXIANG (CN)
CAO HONGGUANG (CN)
LI YUNXIANG (CN)
CAO HONGGUANG (CN)
International Classes:
A61B6/00; G01N23/04; G03B42/02
Foreign References:
| CN1577076A | 2005-02-09 | |||
| CN1596828A | 2005-03-23 | |||
| CN1636516A | 2005-07-13 | |||
| US5278754A | 1994-01-11 | |||
| US6687326B1 | 2004-02-03 | |||
| US1164987A | 1915-12-21 | |||
| CN2126906Y | 1993-02-10 | |||
| CN2829542Y | 2006-10-25 |
Other References:
"Image Engineering (I): Image Processing (2nd)", article "multi-scale image technique"
See also references of EP 2120040A4
See also references of EP 2120040A4
Attorney, Agent or Firm:
BEIJING BEIXIN-ZHICHENG INTELLECTUAL PROPERTY AGENT CO., LTD (Xizhimen NandajieXicheng District, Beijing 5, CN)
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