-
公开(公告)号：US20190311503A1
公开(公告)日：2019-10-10
申请号：US16109097
申请日：2018-08-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sangnam NAM , Kyoung-yong LEE
Abstract: A method of acquiring a tomography image includes acquiring a plurality of raw data by detecting an X-ray irradiated to an object from an X-ray generator a plurality of times, wherein an X-ray detector performs the detecting; setting at least a part of the object as a region of interest; and reconstructing the tomography image including the region of interest, based on the plurality of raw data, wherein the reconstructing of the tomography image includes: selecting filter kernels based on distances between positions of the X-ray generator that irradiated the X-ray to the region of interest and positions of voxels included in the region of interest; generating filter images by applying the selected filter kernels to the raw data corresponding to the positions of the X-ray generator that irradiated the X-ray; and reconstructing the tomography image from the filter images by back-projecting the filter images.
-
公开(公告)号：US20170303868A1
公开(公告)日：2017-10-26
申请号：US15517270
申请日：2015-09-21
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kyoung-yong LEE , Sangnam NAM , Duhgoon LEE
CPC classification number: A61B6/032 , A61B6/027 , A61B6/4085 , A61B6/5205 , A61B6/5258 , A61B6/5288 , G06T7/0012 , G06T11/006 , G06T2207/10081 , G06T2211/421 , G06T2211/436
Abstract: A tomography apparatus that may reduce partial scan artifacts includes: a data acquirer configured to acquire tomography data when X-rays are emitted as a cone beam to an object while rotating by one cycle angular section that is less than one rotation; and an image reconstructor configured to reconstruct a tomography image by using corrected tomography data that is obtained by applying to the tomography data a weight that is set based on at least one of a view that is included in the one cycle angular section and a cone angle in the cone beam.
-
Search Results
2
records
(took 0.014 seconds)
