Title:
SPECTRAL CT IMAGE RECONSTRUCTING METHOD AND SPECTRAL CT IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/041620
Kind Code:
A1
Abstract:
The present application relates to a spectral CT image reconstructing method and a spectral CT imaging system. The spectral CT image reconstructing method comprises: collecting incomplete original projection data in each of a plurality of energy windows; performing a projection data cross estimation using corresponding original projection data in at least one pair of energy windows constituted by different energy windows of the plurality of energy windows to obtain estimated projection data, wherein each pair of energy windows comprises a first energy window and a second energy window; combining the original projection data and the corresponding estimated projection data to obtain complete projection data; and reconstructing a spectral CT image using the complete projection data. The method of the present application can address the problem of inadequate projection data for reconstruction.
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Inventors:
XING YUXIANG (CN)
ZHANG LI (CN)
ZHANG HUAYU (CN)
SHEN LE (CN)
ZHANG LI (CN)
ZHANG HUAYU (CN)
SHEN LE (CN)
Application Number:
PCT/CN2016/096191
Publication Date:
March 16, 2017
Filing Date:
August 22, 2016
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
NUCTECH CO LTD (CN)
NUCTECH CO LTD (CN)
International Classes:
G06T11/00
Foreign References:
| CN104240270A | 2014-12-24 | |||
| CN104323789A | 2015-02-04 | |||
| CN1865954A | 2006-11-22 | |||
| CN102362292A | 2012-02-22 | |||
| CN102947864A | 2013-02-27 |
Other References:
See also references of EP 3321886A4
Attorney, Agent or Firm:
BEIJING INTELLEGAL INTELLECTUAL PROPERTY AGENT LTD. (CN)
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