Patents by Inventor Sean A. Graham

Sean A. Graham 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).

  • Optimized aperture selection imaging computed tomography system and method
    Patent number: 8406373
    Abstract: A method and imaging system for operating imaging computed tomography using a radiation source and a plurality of detectors to generate an image of an object. The method includes: defining a desired image characteristics; and performing calculations to determine the pattern of fluence to be applied by the radiation source, to generate said desired image quality or characteristics. Then, the radiation source is modulated, to generate the intended pattern of fluence between the beam source and the object to be imaged. The desired image characteristics can comprise at least one of desired levels of contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR), and may provide at least one of: desired image quality in at least one defined region of interest; and at least one desired distribution of said image quality.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: March 26, 2013
    Assignee: University Health Network
    Inventors: Sean A. Graham, David A. Jaffray, Jeffrey H. Siewerdsen
  • OPTIMIZED APERTURE SELECTION IMAGING COMPUTED TOMOGRAPHY SYSTEM AND METHOD
    Publication number: 20120002781
    Abstract: A method and imaging system for operating imaging computed tomography using a radiation source and a plurality of detectors to generate an image of an object. The method includes: defining a desired image characteristics; and performing calculations to determine the pattern of fluence to be applied by the radiation source, to generate said desired image quality or characteristics. Then, the radiation source is modulated, to generate the intended pattern of fluence between the beam source and the object to be imaged. The desired image characteristics can comprise at least one of desired levels of contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR), and may provide at least one of: desired image quality in at least one defined region of interest; and at least one desired distribution of said image quality.
    Type: Application
    Filed: August 15, 2011
    Publication date: January 5, 2012
    Inventors: Sean A. Graham, David A. Jaffray, Jeffrey H. Siewerdsen
  • OPTIMIZED APERTURE SELECTION IMAGING COMPUTED TOMOGRAPHY SYSTEM AND METHOD
    Publication number: 20080118032
    Abstract: The invention provides a method and imaging system for operating imaging computed tomography using a radiation source and a plurality of detectors to generate an image of an object. The method includes: defining a desired image characteristics; and performing calculations to determine the pattern of fluence to be applied by the radiation source, to generate said desired image quality or characteristics. Then, the radiation source is modulated, to generate the intended pattern of fluence between the beam source and the object to be imaged. The desired image characteristics can comprise at least one of desired levels of contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR), and may provide at least one of: desired image quality in at least one defined region of interest; and at least one desired distribution of said image quality.
    Type: Application
    Filed: October 5, 2007
    Publication date: May 22, 2008
    Inventors: Sean A. Graham, David A. Jaffray, Jeffrey H. Siewerdsen