发明名称 |
Under-sampled, multi-energy computed tomography (CT) data acquisition data processing |
摘要 |
A method includes extracting a fully sampled fixed kVp sinogram for a pre-determined kVp of interest from an under-sampled mixed kVp sinogram generated from a switched kVp computed tomography scan. A system includes a fixed sinogram extractor that extracts a fully sampled fixed kVp sinogram from an under-sampled mixed kVp sinogram from a switched kVp computed tomography scan. A method includes de-noising at least one of a fully sampled fixed kVp sinogram extracted from an under-sampled mixed kVp sinogram or the under-sampled mixed kVp sinogram by smoothing lower kVp measurements of the sinograms and sharpening higher kVp measurements of the sinograms. |
申请公布号 |
US9031298(B2) |
申请公布日期 |
2015.05.12 |
申请号 |
US201113879817 |
申请日期 |
2011.10.26 |
申请人 |
Koninklijke Philips N.V. |
发明人 |
Shechter Gilad |
分类号 |
G06K9/00;G06T7/00;A61B6/03;A61B6/00;G01N23/04;G06T11/00 |
主分类号 |
G06K9/00 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method, comprising:
generating an estimate of a local kVp modulation profile based on an under-sampled mixed kVp sinogram generated from a switched kVp computed tomography scam; and extracting a fully sampled fixed kVp sinogram for a pre-determined kVp of interest from the under-sampled mixed kVp sinogram generated from the switched kVp computed tomography scan by subtracting the estimate from the under-sampled mixed kVp sinogram. |
地址 |
Eindhoven NL |