Patents by Inventor Haochuan Jiang

Haochuan Jiang 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).

  • Publication number: 20060203957
    Abstract: The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.
    Type: Application
    Filed: April 27, 2006
    Publication date: September 14, 2006
    Inventors: Haochuan Jiang, David Hoffman, James Vartuli
  • Patent number: 7054408
    Abstract: The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator may and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: May 30, 2006
    Assignee: General Electric Company
    Inventors: Haochuan Jiang, David M. Hoffman, James S. Vartuli
  • Publication number: 20060027759
    Abstract: A scintillator array for use in a CT imaging system and a method for making the scintillator array are provided. The scintillator array includes a plurality of projecting elements disposed proximate one another. The scintillator array further includes a glass compound containing a plurality of reflective particles being disposed on the plurality of projecting elements, wherein the projecting elements emit light in response to receiving x-rays.
    Type: Application
    Filed: August 9, 2004
    Publication date: February 9, 2006
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Haochuan Jiang, David Hoffman
  • Publication number: 20050274895
    Abstract: A composition including at least one of a glass composition and a glass ceramic composition, the composition includes a plurality of scintillator crystals.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 15, 2005
    Inventors: Haochuan Jiang, David Hoffman
  • Publication number: 20050133725
    Abstract: The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.
    Type: Application
    Filed: January 4, 2005
    Publication date: June 23, 2005
    Inventors: Haochuan Jiang, David Hoffman, James Vartuli
  • Publication number: 20050129171
    Abstract: A multi-layer reflector for a CT detector is disclosed. The reflector includes an x-ray absorption component that is sandwiched between a pair of highly reflective components. Such a reflector is formed between adjacent scintillators of a CT detector so as to reduce cross-talk between adjacent scintillators as well as maintain a relatively high light output for signal detection. Moreover, the multi-layer reflectors may be disposed one-dimensionally or two-dimensionally across a scintillator array. A method of manufacturing such a reflector and incorporating same into a CT detector is also disclosed.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 16, 2005
    Inventors: Haochuan Jiang, David Hoffman
  • Publication number: 20050111613
    Abstract: A pixilated scintillator array for a radiation detector of an imaging system includes a plurality of scintillator pixels arranged side by side in an array. The scintillator pixels are separated from adjacent scintillator pixels by gaps. Each scintillator pixel includes a top surface, a plurality of side surfaces, and a first layer covering the top surface and the side surfaces of each scintillator pixel. The first layer is formed from a smoothing coating. A second layer formed from a reflective metal coating covers the first layer, and a third layer formed from a barrier coating covers the second layer.
    Type: Application
    Filed: November 20, 2003
    Publication date: May 26, 2005
    Inventors: David Mliner, Haochuan Jiang, Richard Hart, Chang Wei, Jaime Echeverry
  • Patent number: 6898265
    Abstract: A pixilated scintillator array for a radiation detector of an imaging system includes a plurality of scintillator pixels arranged side by side in an array. The scintillator pixels are separated from adjacent scintillator pixels by gaps. Each scintillator pixels includes a top surface, a plurality of side surfaces, and a first layer covering the top surface and the side surfaces of each scintillator pixel. The first layer is formed from a smoothing coating. A second layer formed from a reflective metal coating covers the first layer, and a third layer formed from a barrier coating covers the second layer.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: May 24, 2005
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: David Gerard Mliner, Haochuan Jiang, Richard Louis Hart, Chang Wei, Jaime Andres Echeverry
  • Publication number: 20050078798
    Abstract: A method of manufacturing a collimator assembly is provided. The method includes placing a first core element within a first center collimator path of a first collimator tube to create a first base-tube couple. A couple cross-section of the first base-tube couple is reduced such that the first base-tube couple becomes a first single-fiber fiber. The first single-fiber fiber is assembled into a collimator group. The first core element is dissolved such that a first hollow fiber is generated.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Applicant: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC
    Inventor: Haochuan Jiang
  • Publication number: 20040218712
    Abstract: The present invention is a directed to a non-pixilated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.
    Type: Application
    Filed: April 30, 2003
    Publication date: November 4, 2004
    Inventors: Haochuan Jiang, David M. Hoffman, James S. Vartuli
  • Patent number: 6704391
    Abstract: The present invention discloses a method of aligning scintillator crystalline structures for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are then grown to form a plurality of layer crystallites. While growing the crystallites, a field is applied to align each crystallite structure in a uniform orientation. As a result, the crystallites are configured to reduce light scattering and improve the overall efficiency of the CT system. A CT system is disclosed implementing a scintillator array having a plurality of scintillators, each scintillator being formed of a plurality of uniformly aligned crystallites. Each crystallite includes a receiving surface and an exiting surface configured perpendicular to an x-ray beam. Further, the receiving surface and the exiting surface are connected by a plurality of surface walls arranged parallel to the x-ray beam.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: March 9, 2004
    Assignee: GE Medical Systems Global Technology Co., LLC
    Inventors: David M. Hoffman, Haochuan Jiang
  • Publication number: 20020196897
    Abstract: The present invention discloses a method of aligning scintillator crystalline structures for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are then grown to form a plurality of layer crystallites. While growing the crystallites, a field is applied to align each crystallite structure in a uniform orientation. As a result, the crystallites are configured to reduce light scattering and improve the overall efficiency of the CT system. A CT system is disclosed implementing a scintillator array having a plurality of scintillators, each scintillator being formed of a plurality of uniformly aligned crystallites. Each crystallite includes a receiving surface and an exiting surface configured perpendicular to an x-ray beam. Further, the receiving surface and the exiting surface are connected by a plurality of surface walls arranged parallel to the x-ray beam.
    Type: Application
    Filed: April 2, 2002
    Publication date: December 26, 2002
    Inventors: David M. Hoffman, Haochuan Jiang
  • Patent number: 6498828
    Abstract: A system and method of computer tomography imaging using a cerium-doped lutetium orthosilicate scintillator are provided. The system includes a high frequency electromagnetic energy projection source to project high frequency energy toward an object, such as a patient. A scintillator array having a plurality of cerium-doped lutetium orthosilicate scintillators therein receives the high frequency energy attenuated by the object and emits light energy based on the attenuated energy received. A photodiode array including a plurality of photodiodes is optically-coupled to the scintillator array and configured to detect the light energy and discharge output to a data processing system to produce a visual display. Each scintillator of the scintillator array is formed into a transparent glass ceramic having a high crystalline phase by combing glass-forming compounds in a glass forming system.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: December 24, 2002
    Assignee: General Electric Company
    Inventor: Haochuan Jiang
  • Patent number: 6480562
    Abstract: The present invention provides a detector for a multi-slice CT system. The detector includes a scintillator for receiving and converting high frequency electromagnetic energy directly to electrons. The detector is further configured to directly conduct the electrons. The detector comprises a compound formed of scintillator bulk and a conducting material capable of converting high frequency energy to electrons as well as conduct electrons. The CT system also provides for a gantry having an output for projecting high frequency electromagnetic energy toward the detector and a data acquisition system for receiving electrons directly from the detector. A method to provide imaging electrons to a CT system is also provided.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: November 12, 2002
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Haochuan Jiang, David M. Hoffman
  • Patent number: 6480563
    Abstract: The present invention discloses a method of aligning scintillator crystalline structures for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are then grown to form a plurality of layer crystallites. While growing the crystallites, a field is applied to align each crystallite structure in a uniform orientation. As a result, the crystallites are configured to reduce light scattering and improve the overall efficiency of the CT system. A CT system is disclosed implementing a scintillator array having a plurality of scintillators, each scintillator being formed of a plurality of uniformly aligned crystallites. Each crystallite includes a receiving surface and an exiting surface configured perpendicular to an x-ray beam. Further, the receiving surface and the exiting surface are connected by a plurality of surface walls arranged parallel to the x-ray beam.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: November 12, 2002
    Assignee: GE Medical Systems Global Technology Co., LLC
    Inventors: David M. Hoffman, Haochuan Jiang
  • Publication number: 20020100294
    Abstract: The present invention discloses a method of aligning scintillator crystalline structures for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are then grown to form a plurality of layer crystallites. While growing the crystallites, a field is applied to align each crystallite structure in a uniform orientation. As a result, the crystallites are configured to reduce light scattering and improve the overall efficiency of the CT system. A CT system is disclosed implementing a scintillator array having a plurality of scintillators, each scintillator being formed of a plurality of uniformly aligned crystallites. Each crystallite includes a receiving surface and an exiting surface configured perpendicular to an x-ray beam. Further, the receiving surface and the exiting surface are connected by a plurality of surface walls arranged parallel to the x-ray beam.
    Type: Application
    Filed: April 2, 2002
    Publication date: August 1, 2002
    Inventors: David M. Hoffman, Haochuan Jiang
  • Publication number: 20020075993
    Abstract: The present invention discloses a method of aligning scintillator crystalline structures for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are then grown to form a plurality of layer crystallites. While growing the crystallites, a field is applied to align each crystallite structure in a uniform orientation. As a result, the crystallites are configured to reduce light scattering and improve the overall efficiency of the CT system. A CT system is disclosed implementing a scintillator array having a plurality of scintillators, each scintillator being formed of a plurality of uniformly aligned crystallites. Each crystallite includes a receiving surface and an exiting surface configured perpendicular to an x-ray beam. Further, the receiving surface and the exiting surface are connected by a plurality of surface walls arranged parallel to the x-ray beam.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Inventors: David M. Hoffman, Haochuan Jiang
  • Publication number: 20020067795
    Abstract: The present invention provides a detector for a multi-slice CT system. The detector includes a scintillator for receiving and converting high frequency electromagnetic energy directly to electrons. The detector is further configured to directly conduct the electrons. The detector comprises a compound formed of scintillator bulk and a conducting material capable of converting high frequency energy to electrons as well as conduct electrons. The CT system also provides for a gantry having an output for projecting high frequency electromagnetic energy toward the detector and a data acquisition system for receiving electrons directly from the detector. A method to provide imaging electrons to a CT system is also provided.
    Type: Application
    Filed: December 5, 2000
    Publication date: June 6, 2002
    Inventors: Haochuan Jiang, David M. Hoffman