Patents by Inventor John Wai-chiu Wong

John Wai-chiu Wong 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: 20230390587
    Abstract: An x-ray irradiation system includes a first x-ray tube constructed and arranged to be able to irradiate an object with at least a portion of a first x-ray beam emitted from the first x-ray tube, and a second x-ray tube constructed and arranged to be able to irradiate the object with at least a portion of a second x-ray beam emitted from said second x-ray tube simultaneously with said first x-ray beam. The first and second x-ray tubes are arranged such that the first and second x-ray beams are incident on, and intersect within, the object at respective first and second oblique angles to define a target volume such that a dose rate is substantially uniform as prescribed within said target volume.
    Type: Application
    Filed: October 15, 2021
    Publication date: December 7, 2023
    Applicant: The Johns Hopkins University
    Inventors: John Wai-Chiu WONG, Mohammad REZAEE, Iulian IORDACHITA
  • Publication number: 20210113164
    Abstract: An integrated computed tomography (CT) treatment couch system may include a base platform configured to couple to a rotatable floor component associated with a medical accelerator, a pedestal component mounted to the base platform, a treatment couchtop disposed on the pedestal component, and a CT scanner device. The CT scanner device may include a support structure and a CT gantry. The support structure may be mounted to the base platform or to the pedestal component. The CT gantry may have a bore and may be oriented such that the bore is in line with the treatment couchtop. The CT gantry may be configured to generate on-line helical CT scans to guide radiotherapy provided by the medical accelerator.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: The Johns Hopkins University
    Inventors: John Wai-Chiu WONG, Jeffrey H. SIEWERDSEN, Junghoon LEE
  • Patent number: 9283405
    Abstract: A method and device for real-time mechanical and dosimetric quality assurance measurements in radiation therapy provides a unified measurement of mechanical motion and radiation components of the machine. The device includes an imaging surface for receiving multiple energy sources. The imaging surface has an imaging plane positioned on a same plane as an isocenter of a medical accelerator. A camera measures and records data related to the multiple energy sources. A mirror system can be used to direct the multiple energy sources to the camera for further processing. However, in some instances the mirror system may not be necessary. The device can also include computer control in order to automate the movement of the device and/or automation of the QA protocol. The device can also be used in executing a method for assessing gantry and collimator rotation.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: March 15, 2016
    Assignee: The Johns Hopkins University
    Inventor: John Wai-Chiu Wong
  • Patent number: 9211101
    Abstract: A method and device for real-time mechanical and dosimetric quality assurance measurements in radiation therapy provides a unified measurement of mechanical motion and radiation components of the machine. The device includes an imaging surface for receiving multiple energy sources. The imaging surface has an imaging plane positioned on a same plane as an isocenter of a medical accelerator. A camera measures and records data related to the multiple energy sources. A mirror system can be used to direct the multiple energy sources to the camera for further processing. However, in some instances the mirror system may not be necessary. Accordingly, a single device can be used to unify the measurement of mechanical motion and radiation component of the machine. The device can also include computer control in order to automate the movement of the device and/or automation of the QA protocol.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: December 15, 2015
    Assignee: The Johns Hopkins University
    Inventors: John Wai-chiu Wong, Michael Stuart Patterson, Iulian Ioan Iordachita
  • Publication number: 20150036806
    Abstract: A method and device for real-time mechanical and dosimetric quality assurance measurements in radiation therapy provides a unified measurement of mechanical motion and radiation components of the machine. The device includes an imaging surface for receiving multiple energy sources. The imaging surface has an imaging plane positioned on a same plane as an isocenter of a medical accelerator. A camera measures and records data related to the multiple energy sources. A mirror system can be used to direct the multiple energy sources to the camera for further processing. However, in some instances the mirror system may not be necessary. The device can also include computer control in order to automate the movement of the device and/or automation of the QA protocol. The device can also be used in executing a method for assessing gantry and collimator rotation.
    Type: Application
    Filed: August 1, 2014
    Publication date: February 5, 2015
    Inventor: John Wai-Chiu Wong
  • Publication number: 20140267697
    Abstract: A method and device for real-time mechanical and dosimetric quality assurance measurements in radiation therapy provides a unified measurement of mechanical motion and radiation components of the machine. The device includes an imaging surface for receiving multiple energy sources. The imaging surface has an imaging plane positioned on a same plane as an isocenter of a medical accelerator. A camera measures and records data related to the multiple energy sources. A mirror system can be used to direct the multiple energy sources to the camera for further processing. However, in some instances the mirror system may not be necessary. Accordingly, a single device can be used to unify the measurement of mechanical motion and radiation component of the machine. The device can also include computer control in order to automate the movement of the device and/or automation of the QA protocol.
    Type: Application
    Filed: May 15, 2013
    Publication date: September 18, 2014
    Applicant: The Johns Hopkins University
    Inventors: John Wai-chiu Wong, Michael Stuart Patterson, Iulian Ioan Iordachita
  • Publication number: 20090046831
    Abstract: An image-guided irradiation system has a support stage, a stage-positioning assembly connected to the support stage, an x-ray source attached to a support arm in which the support arm is movable relative to the support stage, a flat-panel x-ray detector disposed proximate the support stage, and at least one of a collimator or an x-ray lens selectively disposable between the x-ray source and the support stage. The x-ray source is suitable to provide an imaging beam of X-rays at a first photon energy and is suitable to provide an irradiation beam of X-rays at a second photon energy. The collimator or x-ray lens is structured and arranged to define at least a width of the irradiation beam when it is disposed between the x-ray source and the support stage while the x-ray source is in operation.
    Type: Application
    Filed: March 12, 2007
    Publication date: February 19, 2009
    Applicant: The John Hopkins University
    Inventors: John Wai-chiu Wong, Todd McNutt, Elwood P. Armour, Eric Cassel Ford