Patents by Inventor Stefan E. Fischer

Stefan E. Fischer 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: 10151815
    Abstract: A magnetic resonance imaging system (78) includes a magnetic resonance imaging device (80), one or more processors (104), and a display (106). The magnetic resonance imaging device (80) includes a magnet (82), gradient coils (88), and one or more radio frequency coils (92). The magnet (82) generates a Bo field. The gradient coils (88) apply gradient fields to the Bo field. The one or more radio frequency coils (92) generate a radio frequency pulse to excite magnetic resonance and measure generated gradient echoes. The one or more processors (104) are configured to activate (116) the one or more radio frequency coils (92) to generate a series of radio frequency pulses spaced by repetition times and to induce magnetic resonance.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: December 11, 2018
    Assignee: KONNINKLIJKE PHILIPS N.V.
    Inventors: Stefan E. Fischer, Craig Kenneth Jones, Melanie Suzanne Kotys
  • Patent number: 9251584
    Abstract: A dual magnetic resonance imaging method simultaneously acquires a first and a second time series of MR images wherein the temporal resolution of the first time series of images is larger than that of the second time series while the spatial resolution of the first time series of images is smaller than that of the second time series. Accordingly, in the context of DCE-MRI, the first time series can be used to determine the arterial input function (AIF) while the second time series can be used to determine the concentration time course in the tissue of interest, e.g. in a vessel wall. Therefore, both the AIF and the tissue time course can be acquired with their optimal dynamic signal range.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: February 2, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Claudia Calcagno-Mani, Stefan E. Fischer, Melanie Suzanne Kotys, Venkatesh Mani, Philip Martyn Robson, Sarayu Ramachandran, Zahi Adel Fayad
  • Publication number: 20150108976
    Abstract: A magnetic resonance imaging system (78) includes a magnetic resonance imaging device (80), one or more processors (104), and a display (106). The magnetic resonance imaging device (80) includes a magnet (82), gradient coils (88), and one or more radio frequency coils (92). The magnet (82) generates a Bo field. The gradient coils (88) apply gradient fields to the Bo field. The one or more radio frequency coils (92) generate a radio frequency pulse to excite magnetic resonance and measure generated gradient echoes. The one or more processors (104) are configured to activate (116) the one or more radio frequency coils (92) to generate a series of radio frequency pulses spaced by repetition times and to induce magnetic resonance.
    Type: Application
    Filed: May 21, 2013
    Publication date: April 23, 2015
    Applicant: KONNINKLIJKE PHILIPS N.V.
    Inventors: Stefan E. Fischer, Craig Kenneth Jones, Melanie Suzanne Kotys
  • Publication number: 20150049931
    Abstract: The invention discloses a dual magnetic resonance imaging method for simultaneously acquiring a first and a second time series of MR images wherein the temporal resolution of the first time series of images is larger than that of the second time series while the spatial resolution of the first time series of images is smaller than that of the second time series. Accordingly, in the context of DCE-MRI, the first time series can be used to determine the arterial input function (AIF) while the second time series can be used to determine the concentration time course in the tissue of interest, e.g. in a vessel wall. Therefore, both the AIF and the tissue time course can be acquired with their optimal dynamic signal range.
    Type: Application
    Filed: March 26, 2013
    Publication date: February 19, 2015
    Inventors: Claudia Calcagno-Mani, Stefan E. Fischer, Melanie Suzanne Kotys, Venkatesh Mani, Philip Martyn Robson, Sarayu Ramachandran, Zahi Adel Fayad
  • Patent number: 5987348
    Abstract: A method of imaging a portion of a body placed in a static magnetic field by means of magnetic resonance (MR) includes the measurement of ECG data of the body in the form of a vector cardiogram, and determination of an acquisition period from the ECG data, including directional information in the vector cardiogram, in order to synchronize measurement of MR signals to a cyclic movement of the body.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: November 16, 1999
    Assignees: Philips Electronics North America Corporation, Barnes-Jewish Hospital
    Inventors: Stefan E. Fischer, Samuel A. Wickline, Christine H. Lorenz