Patents by Inventor Eike Rietzel

Eike Rietzel 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: 9750956
    Abstract: A target volume within a test object is irradiated according to an irradiation plan with a particle beam using a particle irradiation unit. The irradiation plan is determined in order to apply the energy of the particle beam in the target volume according to a predetermined dose distribution. In addition, a boundary condition is specified for at least one of the isoenergy layers and the irradiation plan is additionally specified such that the boundary condition is met for the at least one isoenergy layer. The boundary condition includes one or more of a minimum boundary energy, a maximum boundary energy, a minimum grid point number, a minimum total particle number, a minimum total dose, a minimum dose contribution to a total dose to be administered, a minimum contribution to a target function which is calculated for determining the irradiation plan, and a minimum dose compensation error.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: September 5, 2017
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Jörg Bohsung, Thilo Elsässer, Sven Oliver Grözinger, Iwan Kawrakow, Johann Kim, Robert Neuhauser, Eike Rietzel, Oliver Thilmann
  • Patent number: 9731146
    Abstract: A method for determining an irradiation plan includes specifying a target volume to be irradiated and a condition to be fulfilled, and implementing a first optimization. Implementing the first optimization includes providing a first data record, in which the target volume is mapped, and determining a first parameter set for the irradiation planning by implementing a first optimization algorithm. The first parameter set is optimized with respect to the condition to be fulfilled by using the first data record. The method also includes implementing a second optimization that includes providing a second data record that has a higher resolution than the first data record, determining a second parameter set by implementing a second optimization algorithm. The second parameter set is optimized with respect to the condition to be fulfilled by using the second data record and using the first parameter set. The method also includes generating an irradiation planning data record from the second parameter set.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: August 15, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventor: Eike Rietzel
  • Patent number: 9586058
    Abstract: The idea concerns irradiation of a target volume (53), wherein intensities for target points (70) are determined which are sequentially approached by a beam, comprising the following steps: detecting a volume (63) to be protected, wherein a dose generated by irradiating a target volume (53) does not exceed a predetermined maximum value; determining intensities for target points (70) in such a way that within the volume (63) to be protected the generated dose does not exceed the predetermined maximum value, wherein a dose contribution data record is used for determining the intensities, which dose contribution data record comprises the dose generated at other spots (73) by directing the beam (10) on one of the target points (70) with a predetermined intensity.
    Type: Grant
    Filed: October 17, 2009
    Date of Patent: March 7, 2017
    Assignee: GSI Helmfoltzzentrum fur Schwerinonenforschung GmbH
    Inventors: Christoph Bert, Eike Rietzel, Gerhard Kraft
  • Patent number: 9566451
    Abstract: A method for irradiation treatment planning for a target volume to be irradiated includes specifying a plurality of data sets. The target volume to be irradiated is depicted in each data set of the plurality of data sets. The data sets differ in that the target volume has another position and/or shape. A data set is selected from the plurality of the data sets and other data sets are registered to the selected data set. The method includes forming an amalgamation of the depicted target volumes using the registrations of the other data sets to the selected data set, and determining an area at risk in the selected data set. The method includes modifying the amalgamation of the target volumes such that the area at risk is excluded from the amalgamation of the depicted target volumes. An irradiation treatment plan is calculated using the modified amalgamation of the target volumes.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 14, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wenjing Chen, Alexander Gemmel, Eike Rietzel
  • Patent number: 9511241
    Abstract: A method for producing an irradiation plan for a target volume includes preparing a modulation curve that characterizes modulation of particle numbers at target points in the target volume that lie one behind another in a direction of the beam. The method also includes determining a current position of the target volume and defining a plurality of target points that fully cover the target volume in the current position. Particle numbers are assigned to the plurality of current target points using the modulation curve.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: December 6, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wenjing Chen, Alexander Gemmel, Eike Rietzel
  • Patent number: 9370671
    Abstract: An irradiation plan for a particle irradiation unit is determined in a first run based on a specified target volume in a test object and a specified dose distribution to apply the particle beam in the target volume. The target volume includes a plurality of isoenergy layers. The irradiation plan may be determined in a second run with an additional condition that at least one of the isoenergy layers, determined according to one or more criteria, is not irradiated. Alternatively, the irradiation plan may be determined in a second run with an additional condition that only certain isoenergy layers, determined according to one or more criteria, are irradiated.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: June 21, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jörg Bohsung, Thilo Elsässer, Sven Oliver Grözinger, Johann Kim, Robert Neuhauser, Eike Rietzel, Bernd Schweizer, Oliver Thilmann
  • Patent number: 9330886
    Abstract: To control of an irradiation installation, a particle beam is generated with a beam intensity, and a beam quality of the particle beam is monitored with a beam monitoring device. One of several adjustable measurement ranges is selected, wherein the measurement range of the beam monitoring device is set depending on the beam intensity of the particle beam and/or depending on a particle count to be applied.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: May 3, 2016
    Assignee: GSI Helmholtzzentrum fur Schwerionenforschung GmbH
    Inventors: Christoph Bert, Eike Rietzel
  • Patent number: 9245657
    Abstract: The present disclosure relates to a particle energy modulating device for variably changing the energy of the particles of a particle beam. The particle energy modulating device has a variable energy varying device with a control value correcting device for correcting a supplied control value. The control value correcting device corrects the supplied control values through the use of previously determined calibration data.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: January 26, 2016
    Assignee: GSI Helmholtzzentrum Fur Schwerionenforschung GmbH
    Inventors: Nami Saito, Christoph Bert, Eike Rietzel
  • Patent number: 9119960
    Abstract: A method for producing an irradiation plan for a target volume includes preparing a modulation curve that characterizes modulation of particle numbers at target points in the target volume that lie one behind another in a direction of the beam. The method also includes determining a current position of the target volume and defining a plurality of target points that fully cover the target volume in the current position. Particle numbers are assigned to the plurality of current target points using the modulation curve.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: September 1, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wenjing Chen, Alexander Gemmel, Eike Rietzel
  • Publication number: 20150217135
    Abstract: An irradiation plan for a particle irradiation unit is determined in a first run based on a specified target volume in a test object and a specified dose distribution to apply the particle beam in the target volume. The target volume includes a plurality of isoenergy layers. The irradiation plan may be determined in a second run with an additional condition that at least one of the isoenergy layers, determined according to one or more criteria, is not irradiated. Alternatively, the irradiation plan may be determined in a second run with an additional condition that only certain isoenergy layers, determined according to one or more criteria, are irradiated.
    Type: Application
    Filed: June 11, 2013
    Publication date: August 6, 2015
    Inventors: Jörg Bohsung, Thilo Elsässer, Sven Oliver Grözinger, Johann Kim, Robert Neuhauser, Eike Rietzel, Bernd Schweizer, Oliver Thilmann
  • Publication number: 20150196781
    Abstract: A target volume within a test object is irradiated according to an irradiation plan with a particle beam using a particle irradiation unit. The irradiation plan is determined in order to apply the energy of the particle beam in the target volume according to a predetermined dose distribution. In addition, a boundary condition is specified for at least one of the isoenergy layers and the irradiation plan is additionally specified such that the boundary condition is met for the at least one isoenergy layer. The boundary condition includes one or more of a minimum boundary energy, a maximum boundary energy, a minimum grid point number, a minimum total particle number, a minimum total dose, a minimum dose contribution to a total dose to be administered, a minimum contribution to a target function which is calculated for determining the irradiation plan, and a minimum dose compensation error.
    Type: Application
    Filed: June 7, 2013
    Publication date: July 16, 2015
    Inventors: Jörg Bohsung, Thilo Elsässer, Sven Oliver Grözinger, Iwan Kawrakow, Johann Kim, Robert Neuhauser, Eike Rietzel, Oliver Thilmann
  • Patent number: 9044599
    Abstract: The invention concerns a process for the deposition of an intended dose distribution in a cyclically moved target region moving cyclically (102) by means of multiple irradiations with a beam (105) approaching matrix points of a target matrix in at least two scannings, wherein in each of the scannings, matrix points are approached sequentially. It is characterized through the steps: establishing the maximal tolerance level for local deviation from the intended dose distribution, de-synchronizing the sequence of the irradiation and the cyclical motion of the target region (102), and partitioning the irradiation of the target region (102) in a sufficient number of scannings such that local deviations from the intended dose distribution correspond at most to the maximal tolerance level of deviation from the intended dose distribution.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: June 2, 2015
    Assignee: GSI Helmholtzzentrum für Schwerionenforschung GmbH
    Inventors: Christoph Bert, Eike Rietzel
  • Publication number: 20150123020
    Abstract: The present disclosure relates to a particle energy modulating device for variably changing the energy of the particles of a particle beam. The particle energy modulating device has a variable energy varying device with a control value correcting device for correcting a supplied control value. The control value correcting device corrects the supplied control values through the use of previously determined calibration data.
    Type: Application
    Filed: August 3, 2012
    Publication date: May 7, 2015
    Applicant: GSI Helmholtzzentrum Fur Schwerionenforschung GmbH
    Inventors: Nami Saito, Christoph Bert, Eike Rietzel
  • Patent number: 9012832
    Abstract: The invention relates to a method for checking an irradiation installation in which a dose distribution is deposited in a target object by means of a treatment beam, said method comprising the following steps: an irradiation planning data record optimized for the irradiation of a moving target volume is provided; a movement signal that reproduces a movement of the target volume is provided; a phantom is irradiated, said phantom being formed for detecting a dose distribution deposited in the phantom during or after the irradiation, using the control parameters stored at the irradiation planning data record and the movement signal; a dose distribution deposited in the phantom is determined; a dose distribution to be expected is calculated on the basis of parameters that are related to the control of the irradiation installation during the irradiation; and the determined dose distribution deposited in the phantom is compared to the calculated dose distribution to be expected.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 21, 2015
    Assignees: Siemens Aktiengesellschaft, GSI Helmholtzzentrum Für Schwerionenforschung GmbH
    Inventors: Christoph Bert, Eike Rietzel, Nami Saito
  • Publication number: 20150100250
    Abstract: The device relates to a method and a device (10) for determining an irradiation plan for a particle irradiation unit (20). In the method, a target volume (6) within a test object (14; 18) is irradiated with a particle beam (16) using the particle irradiation unit (20) according to the irradiation plan. The radiation plan is determined in order to apply the energy of the particle beam (16) according to a predetermined dose distribution in the target volume (6), the target volume (6) and the predetermined dose distribution being pre-set. When determining the irradiation plan, irradiation duration is also taken into account, the irradiation plan being determined such that the irradiation duration is as short as possible.
    Type: Application
    Filed: March 28, 2013
    Publication date: April 9, 2015
    Inventors: Thilo Elsässer, Alexander Gemmel, Thomas Hansmann, Eike Rietzel
  • Patent number: 8897417
    Abstract: A device for planning an irradiation is provided. The device includes an evaluation module with an input for receiving input data, a memory and an output for outputting determined output data. The evaluation module is designed for using the input data that includes the type and number of the imaging units present, variables characterizing the tumor and/or variables characterizing the patient, in order to determine the output data that includes the type of the imaging unit, the frequency of use of the imaging unit and/or the parameters for setting the imaging unit to be used in the form of an imaging plan with the aid of a functional relationship, which is based on experience, stored in the memory.
    Type: Grant
    Filed: November 23, 2006
    Date of Patent: November 25, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Eike Rietzel
  • Patent number: 8859264
    Abstract: A phantom device for in-vitro validation of radiation procedures under motion influence in consideration of an effective biological dose includes a phantom having a first biological detector with a first biological sample. The first biological sample includes a plurality of culturing and irradiation elements. Each of the culturing and irradiation elements are provided with a respective biological sub-sample so that the first biological detector is configured as a spatially resolving biological detector. A first motion device is configured to move the first biological detector so as to simulate a motion of a target volume.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: October 14, 2014
    Assignee: GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
    Inventors: Christoph Bert, Eike Rietzel, Alexander Gemmel
  • Patent number: 8809814
    Abstract: A method for irradiating a target volume includes defining a target region having a plurality of target points. The target points are individually approachable. The method includes defining a number of rescanning passes, in which the target region is scanned multiple times, such that the plurality of target points of the target region is approached variously often during the rescanning passes. At least some target points of the plurality of target points are not approached in all of the rescanning passes. The approaching of the plurality of target points is distributed among the rescanning passes such that for a target point of the plurality of target points that is not approached in all of the rescanning passes, at least one further rescanning pass, in which the target point is not approached, is located before a final rescanning pass, in which the target point is approached.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: August 19, 2014
    Assignees: Siemens Aktiengesellschaft, GSI Helmholtzzentrum für Schwerionenforschung GmbH
    Inventors: Christoph Bert, Eike Rietzel
  • Patent number: 8772742
    Abstract: A radiation therapy system for irradiating a target volume with a particle beam is provided. The radiation therapy system includes a radiation source that is operable to output an adjustable irradiation field that includes a particle beam that is scanned point by point over the target volume. A 3D imaging device may obtain a 3D radiation treatment data set in a radiation treatment phase. An adaptation unit adapts the irradiation field to a change in position and/or shape of the target volume in the radiation treatment phase. The adaptation unit compares the 3D radiation treatment data set with a 3D planning image data set furnished and obtains a transformation that describes the change in position and/or shape of the target volume. The adaptation unit transforms an irradiation field based on the transformation.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: July 8, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Eike Rietzel
  • Publication number: 20140166896
    Abstract: To control of an irradiation installation, a particle beam is generated with a beam intensity, and a beam quality of the particle beam is monitored with a beam monitoring device. One of several adjustable measurement ranges is selected, wherein the measurement range of the beam monitoring device is set depending on the beam intensity of the particle beam and/or depending on a particle count to be applied.
    Type: Application
    Filed: April 20, 2012
    Publication date: June 19, 2014
    Applicant: GSI HELMHOLTZZENTRUM FUR SCHWERIONENFORSCHUNG GMBH
    Inventors: Christoph Bert, Eike Rietzel