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US 2014/0212018 A1Published application
System optics in at least in one of backprojection and forward projection for model-based iterative reconstruction
AssigneesToshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
InventorsIlmar A. HEIN, Alexander ZAMYATIN
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Abstract
Iterative reconstruction (IR) algorithms are advantageous over standard filtered backprojection (FBP) algorithms by improving resolution and noise performance. In this regard, model-based IR algorithms (MBIR) have been developed to incorporate accurate system models into IR and result in a better image quality than IR algorithms without a system model. System optics are included in both forward and backprojection (IR-SOM-FPBP).
Claims22
A method of reconstructing an image using a scanner, comprising:
- acquiring data for an object;
- estimating an image based upon the data;
- iteratively performing steps of:
- forward projecting to generate projection data using a first predetermined one of system optics models and non-system optics models;
- and
- back projecting to update an image using a second predetermined one of the system optics models.
3 more elements
A system for reconstructing an image using a scanner, comprising:
- a scanner for acquiring data for an object;
- an image processing unit connected to said scanner for estimating an image based upon the data;
- and
- an image reconstruction unit connected to said image processing unit for iteratively performing forward projection to generate projection data using a first predetermined one of system optics models and non-system optics models and back projection to update an image using a second predetermined one of the system optics models.
1 more element
Dependencies are inferred from the claim text.