公开(公告)号：US11175418B2

公开(公告)日：2021-11-16

申请号：US16649416

申请日：2018-09-12

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Chuanyong Bai ,  Andriy Andreyev ,  Shushen Lin ,  Bin Zhang ,  Michael Allen Miller ,  Xiyun Song ,  Jinghan Ye ,  Shekhar Dwivedi ,  Zhiqiang Hu ,  Yu-Lung Hsieh ,  Ilya Brodskiy ,  Thomas Christopher Bulgrin ,  Yang-Ming Zhu ,  Douglas B. McKnight

IPC分类号： G01T7/00 ,  A61B6/03 ,  G01T1/29 ,  A61B6/00 ,  G06T11/00

摘要： A non-transitory computer-readable medium storing instructions readable and executable by a workstation (18) including at least one electronic processor (20) to perform a quality control (QC) method (100). The method includes: receiving a current QC data set acquired by a pixelated detector (14) and one or more prior QC data sets acquired by the pixelated detector; determining stability levels of detector pixels (16) of the pixelated detector over time from the current QC data set and the one or more prior QC data sets; labeling a detector pixel of the pixelated detector as dead when the stability level determined for the detector pixel is outside of a stability threshold range; and displaying, on a display device (24) operatively connected with the workstation, an identification (28) of the detector pixels labelled as dead.

公开(公告)号：US11009615B2

公开(公告)日：2021-05-18

申请号：US16470730

申请日：2017-12-18

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Chuanyong Bai ,  Andriy Andreyev ,  Andre Frank Salomon ,  Andreas Goedicke ,  Jinghan Ye ,  Yu-Lung Hsieh ,  Bin Zhang ,  Xiyun Song ,  Manoj Narayanan ,  Zhiqiang Hu

IPC分类号： G01T1/00 ,  G01T1/29

摘要： A time of flight (TOF) positron emission tomography (PET) image (38) is generated from TOF PET imaging data (10) acquired of a subject using a TOF PET imaging data acquisition device (6). Iterative image reconstruction (30) of the TOF PET imaging data is performed with TOF localization of counts along respective lines of response (LORs) to iteratively update a reconstructed image (32). Values for at least one regularization or filtering parameter are assigned to the TOF PET imaging data or to voxels of the reconstructed image based on an estimated TOF localization resolution for the TOF PET imaging data or voxels. Regularization (34) or filtering (36) of the reconstructed image is performed using the assigned values for the at least one regularization or filtering parameter. In some embodiments, the varying TOF localization resolution for the TOF PET imaging data or voxels is estimated based on related acquisition characteristics such as count rates or operating temperature of the detectors.

公开(公告)号：US11798205B2

公开(公告)日：2023-10-24

申请号：US16959219

申请日：2019-01-02

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Chuanyong Bai ,  Andriy Andreyev ,  Bin Zhang ,  James Gurian ,  Zhiqiang Hu ,  Yu-Lung Hsieh ,  Shekhar Dwivedi ,  Jinghan Ye ,  Xiyun Song ,  Michael Allen Miller

IPC分类号： G06T11/00 ,  G06T5/00 ,  G06T7/00

CPC分类号： G06T11/006 ,  G06T5/002 ,  G06T7/0012 ,  G06T2200/24 ,  G06T2207/10081 ,  G06T2207/30004

摘要： A non-transitory computer-readable medium stores instructions readable and executable by a workstation (18) including at least one electronic processor (20) to perform an image reconstruction method (100). The method includes: determining a weighting parameter (13) of an edge-preserving regularization or penalty of a regularized image reconstruction of an image acquisition device (12) for an imaging data set obtained by the image acquisition device; determining an edge sensitivity parameter (γ) of the edge-preserving algorithm for the imaging data set obtained by the image acquisition device; and reconstructing the imaging data set obtained by the image acquisition device to generate a reconstructed image by applying the regularized image reconstruction including the edge-preserving regularization or penalty with the determined weighting and edge sensitivity parameters to the imaging data set obtained by the image acquisition device.

公开(公告)号：US10925554B2

公开(公告)日：2021-02-23

申请号：US15533749

申请日：2015-12-03

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Andriy Andreyev ,  Manoj Narayanan ,  Bin Zhang ,  Zhiqiang Hu ,  Yu-Lung Hsieh ,  Xiyun Song ,  Jinghan Ye

IPC分类号： A61B6/00 ,  A61B6/03 ,  G06T11/00 ,  G01T1/16 ,  A61B5/00 ,  A61B5/055

摘要： A radioemission scanner (12) is operated to acquire tomographic radioemission data of a radiopharmaceutical in a subject in an imaging field of view (FOV). An imaging system is operated to acquire extension imaging data of the subject in an extended FOV disposed outside of and adjacent the imaging FOV along an axial direction (18). A distribution of the radiopharmaceutical in the subject in the extended FOV is estimated based on the extension imaging data, and further based on a database (32) of reference subjects. The tomographic radioemission data are reconstructed to generate a reconstructed image (26) of the subject in the imaging FOV. The reconstruction includes correcting the reconstructed image for scatter from the extended FOV into the imaging FOV based on the estimated distribution of the radiopharmaceutical in the subject in the extended FOV.