Patents by Inventor Mark A. Hammel

Mark A. Hammel 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).

  • Patent number: 6375354
    Abstract: A method is provided for automatically determining a variable laterally centered setpoint for a digital radiographic imaging system that includes a radiation source and a digital detector. The variable laterally centered setpoint is determined during a setup procedure which involves providing a detector at a detector location, positioning the radiation source at a first source location, detecting a radiation field generated by the source while at the first source location, determining the lateral centerline of the detected radiation field, repositioning the source to a second source location that is laterally displaced from the first location, detecting a second radiation field, and determining the lateral centerline of the second radiation field. A lateral gain constant for the imaging system can then be determined based on the determined centerlines of the first and second radiation fields and feedback signals from position sensors that are representative of the first and second source locations.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: April 23, 2002
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Vincent S. Polkus, Jon C. Omernick, Mark A. Hammel