Patents by Inventor Rolf POHMANN

Rolf POHMANN 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).

  • Transmit/receive switch, a transmit coil array and a receive coil array for MRI
    Patent number: 10168402
    Abstract: The invention relates to an MRI apparatus for magnetic resonance imaging of a subject of investigation, comprising: a coil arrangement (1) for transmitting an excitation signal into the subject and for receiving a response signal from the subject; a high-power radio-frequency amplifier (4) for generating the excitation signal; and a low-noise amplifier (LNA) for amplifying the response signal. The invention provides a transmit/receive switch (5) which is alternatively operable in a transmit mode or in a receive mode. In the transmit mode, the transmit/receive switch (5) transmits the excitation signal to the coil arrangement (1) and protects the low-noise amplifier (LNA) from the outgoing excitation signal. In the receive mode, the transmit/receive switch (5) routes the in coming response signal to the low-noise amplifier (LNA).
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 1, 2019
    Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e. V.
    Inventors: Shajan Gunamony, Jens Hoffmann, Klaus Scheffler, Rolf Pohmann
  • A TRANSMIT/RECEIVE SWITCH, A TRANSMIT COIL ARRAY AND A RECEIVE COIL ARRAY FOR MRI
    Publication number: 20160209481
    Abstract: The invention relates to an MRI apparatus for magnetic resonance imaging of a subject of investigation, comprising: a coil arrangement (1) for transmitting an excitation signal into the subject and for receiving a response signal from the subject; a high-power radio-frequency amplifier (4) for generating the excitation signal; and a low-noise amplifier (LNA) for amplifying the response signal. The invention provides a transmit/receive switch (5) which is alternatively operable in a transmit mode or in a receive mode. In the transmit mode, the transmit/receive switch (5) transmits the excitation signal to the coil arrangement (1) and protects the low-noise amplifier (LNA) from the outgoing excitation signal. In the receive mode, the transmit/receive switch (5) routes the in coming response signal to the low-noise amplifier (LNA).
    Type: Application
    Filed: September 25, 2013
    Publication date: July 21, 2016
    Inventors: Shajan GUNAMONY, Jens HOFFMANN, Klaus SCHEFFLER, Rolf POHMANN