Patents by Inventor Jiaqin Dong
Jiaqin Dong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10154820Abstract: A method for a CT scan of a body part, wherein a marker is positioned on the body part. The method comprises: positioning a marker on the body part; performing a scout scan of the area which contains the body part, to acquire a scout image; detecting the marker in the scout image to acquire position information of the marker; and using the position information to navigate the CT scan.Type: GrantFiled: November 26, 2013Date of Patent: December 18, 2018Assignee: General Electric CompanyInventors: Ping Liu, Jiaqin Dong, Hai Feng Wu, Meng Zhang
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Patent number: 10026168Abstract: A medical scanning system and method for determining scanning parameters based on a scout image, the system includes: a scanned object description module for describing the shape of a scanned object on an initial image; an adjustment module for aligning the shape of the scanned object with the pre-stored average shape; a principal component analysis module for extracting the principal component for the aligned shape of the scanned object; a desired shape acquisition module for imparting weight parameters to said principal component, acquiring a plurality of new shapes, and from said plurality of new shapes, determining the new shape with the maximum cost function value as the desired shape and a scanning parameter setting module for setting scanning parameters based on the desired shape.Type: GrantFiled: March 10, 2015Date of Patent: July 17, 2018Assignee: General Electric CompanyInventors: Ping Liu, Jiaqin Dong, Jie Wu
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Patent number: 9808209Abstract: A collimator for use in a CT system made of an X-ray absorbing material, the collimator comprises an imaging aperture having a first width for passage of a first X-ray beam, the first X-ray beam being used for X-ray imaging, and a tracking aperture having a second width for passage of a second X-ray beam, the second X-ray beam being used for X-ray beam tracking.Type: GrantFiled: December 20, 2013Date of Patent: November 7, 2017Assignee: General Electric CompanyInventors: Bin Wang, Jiang Hsieh, Xianjun Pan, Jiaqin Dong
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Publication number: 20170018078Abstract: A medical scanning system and method for determining scanning parameters based on a scout image, the system includes: a scanned object description module for describing the shape of a scanned object on an initial image; an adjustment module for aligning the shape of the scanned object with the pre-stored average shape; a principal component analysis module for extracting the principal component for the aligned shape of the scanned object; a desired shape acquisition module for imparting weight parameters to said principal component, acquiring a plurality of new shapes, and from said plurality of new shapes, determining the new shape with the maximum cost function value as the desired shape and a scanning parameter setting module for setting scanning parameters based on the desired shape.Type: ApplicationFiled: March 10, 2015Publication date: January 19, 2017Inventors: Ping LIU, Jiaqin DONG, Jie WU
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Patent number: 9443295Abstract: The present invention provides a method and apparatus for reducing artifacts in Computed Tomography (CT) image reconstruction. The method comprises acquiring an original reconstructed image, then conducting total variation processing for the original reconstructed image generating a total variation reconstructed image, conducting an initial metal artifact reduction processing for the original reconstructed image generating an initial metal artifact reduction reconstructed image, generating a weighted image based on the total variation reconstructed image and the initial metal artifact reduction reconstructed image, wherein the weighted image reflects that the original reconstructed image contains white-band artifactsd combining a portion of the original reconstructed image and a portion of the initial metal artifact reduction reconstructed image through the weighted image to generate a final image, wherein the final image does not contain white-band artifact.Type: GrantFiled: August 28, 2014Date of Patent: September 13, 2016Assignee: General Electric CompanyInventors: Shuqin Dong, Jiaqin Dong, Shuo Li
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Patent number: 9443278Abstract: A method and apparatus for data conversion in an unequal ? angle CT system. The method for imaging in a CT system having a flat module detector array includes obtaining fan beam projection data of an object from a CT scan, obtaining a geometric structure parameter of the flat module detector array; rebinning data from the fan beam projection data to parallel beam projection data based on the geometric structure parameter to convert the fan beam projection data into the parallel beam projection data, and generating a CT image from the parallel beam projection data.Type: GrantFiled: January 28, 2014Date of Patent: September 13, 2016Assignee: General Electric CompanyInventors: Jun Li, Shuo Li, Juan Zhong, Jiaqin Dong, Abhishek Rawat
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Patent number: 9437017Abstract: A method and apparatus for metal artifact elimination in a medical image. The method includes: obtaining a medical image to be processed; determining whether or not a metal region is contained in the medial image; and performing artifact elimination processing to the medical image when metal regions are contained in the medical image and a metal density value of one of the metal regions is greater than or equal to a preset density value.Type: GrantFiled: October 24, 2014Date of Patent: September 6, 2016Assignee: GENERAL ELECTRIC COMPANYInventors: Shuqin Dong, Jiaqin Dong, Shuo Li, Jiang Hsieh
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Patent number: 9437018Abstract: The present invention provides a method and apparatus for reducing artifacts in CT image reconstruction. The method comprises obtaining an original reconstructed image and an original sinogram and determining a proportion of metal pixels in the original reconstructed image. If the proportion is greater than a first threshold value, then generating an expanded metal template based on the original reconstructed image, generating a metal-free, metal artifact reduced (MAR) image based on the expanded metal template and the original sinogram, and generating a final image based on the expanded metal template and the metal-free, MAR image. However, if the proportion of metal pixels is less than a second threshold value, then generating an expanded metal template based on the original reconstructed image, generating a metal-free, metal artifact reduced image based on a treatment, and generating a final image based on the expanded metal template and the metal-free, MAR image.Type: GrantFiled: November 24, 2014Date of Patent: September 6, 2016Assignee: GE Medical Systems Global Technology CO. LLCInventors: Shuqin Dong, Jiaqin Dong, Shou Li
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Patent number: 9398890Abstract: A method for geometric calibration of a CT scanner, including, for each row of at least one row of detector cells, establishing a complete geometric description of the CT scanner, including at least one unknown geometric parameter, establishing a description of a forward projection function using the complete geometric description, acquiring actual projection coordinates of a calibration phantom placed in a scanning field of view (SFOV) on a current row of detector cells and corresponding to a plurality of angles, acquiring calculated projection coordinates of the calibration phantom on the current row of detector cells and corresponding to the plurality of angles using the description of the forward projection function, and acquiring a calibrated value for the at least one unknown geometric parameter by evaluating the at least one unknown geometric parameter based on the acquired actual projection coordinates and calculated projection coordinates via a nonlinear least square fitting algorithm.Type: GrantFiled: January 30, 2014Date of Patent: July 26, 2016Assignee: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLCInventors: Jiaqin Dong, Shuo Li, Jun Li, Ximiao Cao, Bin Wang
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Patent number: 9299148Abstract: A method and system for automatically determining a localizer in a scout image. The method comprises obtaining a 3D model best matched to an object to be scanned and projecting a localizer in the best matched 3D model onto a scout image of the object to be scanned to obtain an optimal localizer. The system comprises an obtaining device for obtaining a 3D model best matched to an object to be scanned and a determining device for projecting a localizer in the best matched 3D model onto a scout image of the object to be scanned to obtain an optimal localizer.Type: GrantFiled: November 1, 2013Date of Patent: March 29, 2016Assignee: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLCInventors: Ping Liu, Jiaqin Dong, Yilun Shi
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Publication number: 20150146955Abstract: The present invention provides a method and apparatus for reducing artifacts in CT image reconstruction. The method comprises obtaining an original reconstructed image and an original sinogram and determining a proportion of metal pixels in the original reconstructed image. If the proportion is greater than a first threshold value, then generating an expanded metal template based on the original reconstructed image, generating a metal-free, metal artifact reduced (MAR) image based on the expanded metal template and the original sinogram, and generating a final image based on the expanded metal template and the metal-free, MAR image. However, if the proportion of metal pixels is less than a second threshold value, then generating an expanded metal template based on the original reconstructed image, generating a metal-free, metal artifact reduced image based on a treatment, and generating a final image based on the expanded metal template and the metal-free, MAR image.Type: ApplicationFiled: November 24, 2014Publication date: May 28, 2015Inventors: Shuqin DONG, Jiaqin DONG, Shou LI
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Publication number: 20150117740Abstract: A method and apparatus for metal artifact elimination in a medical image. The method includes: obtaining a medical image to be processed; determining whether or not a metal region is contained in the medial image; and performing artifact elimination processing to the medical image when metal regions are contained in the medical image and a metal density value of one of the metal regions is greater than or equal to a preset density value.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Inventors: Shuqin DONG, Jiaqin DONG, Shuo Li, Jiang HSIEH
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Publication number: 20150092907Abstract: A method and apparatus for reducing artifacts in Computed Tomography (CT) image reconstruction. The method includes: acquiring an original reconstructed image; conducting total variation processing for the original reconstructed image, to generate a total variation reconstructed image; conducting initial metal artifact reduction processing for the original reconstructed image, to generate an initial metal artifact reduction reconstructed image; generating a weighted image based on the total variation reconstructed image and the initial metal artifact reduction reconstructed image, wherein the weighted image reflects that the original reconstructed image contains white-band artifacts; and combining a portion of the original reconstructed image and a portion of the initial metal artifact reduction reconstructed image through the weighted image to generate a final image, wherein the final image does not contain white-band artifact.Type: ApplicationFiled: August 28, 2014Publication date: April 2, 2015Inventors: Shuqin DONG, Jiaqin DONG, Shou LI
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Patent number: 8873819Abstract: A method for sorting CT image slices comprising, if no image slice comprises a target respiratory phase at a couch position, determining a target breathing feature value corresponding to the target respiratory phase based on a respiratory motion curve of a scanned patient, searching from a plurality of image slices at the couch position for one or more image slices comprising a breathing feature value close to the target breathing feature value to serve as candidate image slices, and selecting, based on a breathing feature value difference between the breathing feature value of each of the candidate image slices and the target breathing feature value and/or an image difference between each of the candidate image slices and at least one reference image slice, a single image slice from the candidate image slices for constructing the 3D CT image for the target respiratory phase.Type: GrantFiled: January 30, 2013Date of Patent: October 28, 2014Assignee: GE Hangwei Medical Systems Co., Ltd.Inventors: Ping Liu, Jiaqin Dong, Shuang Wang
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Publication number: 20140211925Abstract: A method for geometric calibration of a CT scanner, including, for each row of at least one row of detector cells, establishing a complete geometric description of the CT scanner, including at least one unknown geometric parameter, establishing a description of a forward projection function using the complete geometric description, acquiring actual projection coordinates of a calibration phantom placed in a scanning field of view (SFOV) on a current row of detector cells and corresponding to a plurality of angles, acquiring calculated projection coordinates of the calibration phantom on the current row of detector cells and corresponding to the plurality of angles using the description of the forward projection function, and acquiring a calibrated value for the at least one unknown geometric parameter by evaluating the at least one unknown geometric parameter based on the acquired actual projection coordinates and calculated projection coordinates via a nonlinear least square fitting algorithm.Type: ApplicationFiled: January 30, 2014Publication date: July 31, 2014Applicant: GE Medical Systems Global Technology Company, LLCInventors: Jiaqin DONG, Shuo LI, Jun LI, Ximiao CAO, Bin WANG
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Publication number: 20140211908Abstract: A method and apparatus for data conversion in an unequal ? angle CT system. The method for imaging in a CT system having a flat module detector array includes obtaining fan beam projection data of an object from a CT scan, obtaining a geometric structure parameter of the flat module detector array; rebinning data from the fan beam projectiondata to parallel beam projection data based on the geometric structure parameter to convert the fan beam projection data into the parallel beam projection data, and generating a CT image from the parallel beam projection data.Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLCInventors: JUN LI, SHUO LI, JUAN ZHONG, JIAQIN DONG, ABHISHEK RAWAT
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Publication number: 20140185745Abstract: A collimator for use in a CT system made of an X-ray absorbing material, the collimator comprises an imaging aperture having a first width for passage of a first X-ray beam, the first X-ray beam being used for X-ray imaging, and a tracking aperture having a second width for passage of a second X-ray beam, the second X-ray beam being used for X-ray beam tracking.Type: ApplicationFiled: December 20, 2013Publication date: July 3, 2014Applicant: General Electric CompanyInventors: Bin WANG, Jiang HSIEH, Xianjun PAN, Jiaqin DONG
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Publication number: 20140147026Abstract: A method and system for automatically determining a localizer in a scout image. The method comprises obtaining a 3D model best matched to an object to be scanned and projecting a localizer in the best matched 3D model onto a scout image of the object to be scanned to obtain an optimal localizer. The system comprises an obtaining device for obtaining a 3D model best matched to an object to be scanned and a determining device for projecting a localizer in the best matched 3D model onto a scout image of the object to be scanned to obtain an optimal localizer.Type: ApplicationFiled: November 1, 2013Publication date: May 29, 2014Applicant: GE Medical Systems Global Technology Company, LLCInventors: Ping LIU, Jiaqin DONG, Yilun SHI
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Publication number: 20140148685Abstract: A method for a CT scan of a body part, wherein a marker is positioned on the body part. The method comprises: positioning a marker on the body part; performing a scout scan of the area which contains the body part, to acquire a scout image; detecting the marker in the scout image to acquire position information of the marker; and using the position information to navigate the CT scan.Type: ApplicationFiled: November 26, 2013Publication date: May 29, 2014Applicant: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLCInventors: Ping LIU, Jiaqin DONG, Hai Feng WU, Meng ZHANG
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Publication number: 20140146936Abstract: A method and system for a gated radiation therapeutic system is provided. The method comprises performing a 4D-CT scan to obtain CT images, and processing the CT images to extract a characteristic signal, wherein the characteristic signal is associated with respiratory phases within the patient's breathing cycle and has a correlation relation with the external signal of the gated radiation therapy. The method further comprises controlling a radiation beam for the gated radiation therapy based on the correlation relation between the characteristic signal and the external signal. The system comprises a 4D-CT scanner for performing a 4D-CT scan to obtain CT images and a characteristic signal extracting component for processing the CT images to extract a characteristic signal. The system further comprises a radiation control component for controlling a radiation beam for the gated radiation therapy based on the correlation relation between the characteristic signal and the external signal.Type: ApplicationFiled: November 1, 2013Publication date: May 29, 2014Applicant: GE Medical Systems Global Technology Company, LLCInventors: Ping LIU, Jiaqin DONG, Yilun SHI