The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2019
Filed:
Sep. 28, 2017
Shenyang Neusoft Medical Systems Co., Ltd., Shenyang, CN;
Shenyang Neusoft Medical Systems Co., Ltd., Shenyang, CN;
Abstract
Methods, devices, and apparatus, including computer programs encoded on a computer storage medium for reconstructing an image are provided. An example method includes: acquiring Computed Tomography (CT) projection data of a subject, determining an image cutoff frequency Faccording to a CT image matrix size for reconstructing a CT image and an imaging field of view size, obtaining a convolution kernel and a cutoff frequency Fof the convolution kernel, using the convolution kernel as a reconstruction convolution kernel when F<F; adjusting Fto a product of a preset value k and Fand truncating the convolution kernel to obtain a portion of the convolution kernel having a cutoff frequency no more than the adjusted Fas the reconstruction convolution kernel when F≥F, and reconstruct the CT image with the CT projection data and the reconstruction convolution kernel by using a convolution back-projection algorithm.