Patents by Inventor Er-wei Bai

Er-wei Bai 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).

  • System and method for adaptive bolus chasing computed tomography (CT) angiography
    Patent number: 7522744
    Abstract: A method of utilizing bolus propagation and control for contrast enhancement comprises measuring with an imaging device a position of a bolus moving along a path in a biological structure. The method further comprises predicting a future position of the bolus using a simplified target model and comparing the predicted future position of the bolus with the measured position of the bolus. A control action is determined to eliminate a discrepancy, if any, between the predicted position of the bolus and the measured position of the bolus and the relative position of the imaging device and the biological structure is adaptively adjusted according to the control action to chase the motion of the bolus.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: April 21, 2009
    Assignee: University of Iowa Research Foundation
    Inventors: Er-wei Bai, Ge Wang, Michael W. Vannier
  • System and method for adaptive bolus chasing computed tomography (CT) angiography
    Publication number: 20060178836
    Abstract: A method of utilizing bolus propagation and control for contrast enhancement comprises measuring with an imaging device a position of a bolus moving along a path in a biological structure. The method further comprises predicting a future position of the bolus using a simplified target model and comparing the predicted future position of the bolus with the measured position of the bolus. A control action is determined to eliminate a discrepancy, if any, between the predicted position of the bolus and the measured position of the bolus and the relative position of the imaging device and the biological structure is adaptively adjusted according to the control action to chase the motion of the bolus.
    Type: Application
    Filed: August 29, 2005
    Publication date: August 10, 2006
    Inventors: Er-wei Bai, Ge Wang, Michael Vannier
  • Methods for evaluating cell membrane properties
    Publication number: 20060105321
    Abstract: Methods for measuring cell membrane property are disclosed. A computer readable medium includes instructions for deriving from transcellular impedance a measurement of a cell membrane property and provides the stability and error of the measurement. The derivation from the transcellular impedance includes the real and imaginary components of the transcellular impedance and also uses a geometric shape to model the shape of the cell. Alternatively, the derivation from the transcellular impedance includes magnitude and complex components. The measurements include the membrane capacitance, membrane resistance, and/or cell adhesion.
    Type: Application
    Filed: July 28, 2005
    Publication date: May 18, 2006
    Inventors: Alan Moy, James Bodmer, Er-Wei Bai, Anthony English