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公开(公告)号：US10438378B2
公开(公告)日：2019-10-08
申请号：US15686157
申请日：2017-08-25
Applicant: UIH AMERICA, INC.
Inventor： Tao Feng , Jizhe Wang , Wentao Zhu , Hongdi Li
Abstract: The present disclosure relates to systems and methods for determining a target activity map and a target attenuation map for producing a PET image. The systems may execute the methods to acquire, based on a PET system, a first dataset relating to coincidence events with TOF information, and a second dataset relating to single events. The systems may also execute the methods to determine a target activity map and a target attenuation map based on the first dataset and the second dataset through a plurality of iterations. The systems may further execute the methods to generate the PET image based on the target activity map and the target attenuation map.
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Patent Agency Ranking
公开(公告)号：US10690782B2
公开(公告)日：2020-06-23
申请号：US15721783
申请日：2017-09-30
Applicant: UIH AMERICA, INC.
Inventor： Jizhe Wang , Hongdi Li , Tao Feng
Abstract: The disclosure relates to PET imaging systems and methods. The systems may execute the methods to obtain an anatomical image of a subject acquired when the subject remains in a breath-hold status; obtain PET data of the subject, the PET data corresponding to a respiration signal with a plurality of respiratory phases of the subject, the respiratory phases including a first respiratory phase and a second respiratory phase; gate the PET data; reconstruct a plurality of gated PET images, the plurality of gated PET images including a first gated PET image corresponding to the first respiratory phase and a second gated PET image corresponding to the second respiratory phase; determine a first motion vector field between the first gated PET image and the second gated PET image; determine a second motion vector field between the anatomical image and the second gated PET image; and reconstruct an attenuation corrected PET image.
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公开(公告)号：US10360724B2
公开(公告)日：2019-07-23
申请号：US15618425
申请日：2017-06-09
Applicant: UIH AMERICA, INC.
Inventor： Tao Feng , Jizhe Wang , Hongdi Li
Abstract: The present disclosure relates to a method and system for reconstructing an Emission Computed Tomography (ECT) image based on locally adaptive gating. ECT projection data relating to a subject may be obtained. The ECT projection data may correspond to a plurality of voxels in a reconstructed image domain. The ECT projection data may be divided into a plurality of frames. A plurality of intermediate images may be reconstructed according to the plurality of frames. A plurality of motion amplitudes of the plurality of voxels may be obtained based on the plurality of intermediate images. A plurality of gate numbers may be determined for the plurality of voxels based on the plurality of motion amplitudes of the plurality of voxels. A plurality of ECT images may be reconstructed based on the ECT projection data and the plurality of gate numbers.
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公开(公告)号：US20180174360A1
公开(公告)日：2018-06-21
申请号：US15618425
申请日：2017-06-09
Applicant: UIH AMERICA, INC.
Inventor： Tao Feng , Jizhe Wang , Hongdi Li
CPC classification number: A61B6/5264 , A61B6/00 , A61B6/037
Abstract: The present disclosure relates to a method and system for reconstructing an Emission Computed Tomography (ECT) image based on locally adaptive gating. ECT projection data relating to a subject may be obtained. The ECT projection data may correspond to a plurality of voxels in a reconstructed image domain. The ECT projection data may be divided into a plurality of frames. A plurality of intermediate images may be reconstructed according to the plurality of frames. A plurality of motion amplitudes of the plurality of voxels may be obtained based on the plurality of intermediate images. A plurality of gate numbers may be determined for the plurality of voxels based on the plurality of motion amplitudes of the plurality of voxels. A plurality of ECT images may be reconstructed based on the ECT projection data and the plurality of gate numbers.
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公开(公告)号：US10529130B2
公开(公告)日：2020-01-07
申请号：US16511160
申请日：2019-07-15
Applicant: UIH AMERICA, INC.
Inventor： Tao Feng , Jizhe Wang , Hongdi Li
Abstract: The present disclosure relates to a method and system for reconstructing an Emission Computed Tomography (ECT) image based on locally adaptive gating. ECT projection data relating to a subject may be obtained. The ECT projection data may correspond to a plurality of voxels in a reconstructed image domain. The ECT projection data may be divided into a plurality of frames. A plurality of intermediate images may be reconstructed according to the plurality of frames. A plurality of motion amplitudes of the plurality of voxels may be obtained based on the plurality of intermediate images. A plurality of gate numbers may be determined for the plurality of voxels based on the plurality of motion amplitudes of the plurality of voxels. A plurality of ECT images may be reconstructed based on the ECT projection data and the plurality of gate numbers.
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公开(公告)号：US10282871B2
公开(公告)日：2019-05-07
申请号：US15645558
申请日：2017-07-10
Applicant: UIH AMERICA, INC.
Inventor： Jizhe Wang , Tao Feng , Hongdi Li , Wentao Zhu
Abstract: A method may include; obtaining a 3D CT image of a scanning area of a subject; obtaining PET data of the scanning area of the subject; gating the PET data based on a plurality of motion phases; reconstructing a plurality of gated 3D PET images; registering the plurality of gated 3D PET images with a reference 3D PET image; determining a motion vector field corresponding to a gated 3D PET image of the plurality of gated 3D PET images based on the registration; determining a motion phase for each of the plurality of CT image layers; correcting, for each of the plurality of CT image layers, the CT image layer with respect to a reference motion phase; and reconstructing a gated PET image with respect to the reference motion phase based on the corrected CT image layers and the PET data.
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