Siemens Aktiengesellschaft

Siemens Aktiengesell Schaft

Stefan Roell

Sebastian Schmidt

Oliver Heid

Berthold Kiefer

Kirstin Jattke

Elisabeth Weiland

Jan Ruff

Sonia Nielles-Vallespin

Marianne Vorbuchner

Lewis Griffin

Anke Siebert

A device for radiation therapy implemented with image monitoring has a magnetic resonance device and an exposure device. The magnetic resonance device has a magnet and primarily serves for image monitoring an examination object of a patient in an examination volume of the magnetic resonance device. The exposure is fashioned to be static and serves to expose the examination subject in the examination volume with therapeutic beams. The patient (and therefore the examination subject) are supported by a patient positioning device such that the examination subject can be moved relative to the magnetic resonance device and the exposure device around at least one rotation axis.

Device for radiation therapy under image monitoring

In a method to determine a kidney function parameter of kidneys of an examination person with the aid of magnetic resonance tomography, at least one magnetic resonance measurement is implemented for an examination region of the examination person that comprises a urinary bladder of the examination person, to acquire magnetic resonance data from the examination region that include at least image data. The concentration of a urophanic substance in the urinary bladder of the examination person is automatically determined based on the acquired magnetic resonance data. A volume of the urinary bladder is automatically determined based on the acquired image data. A kidney function parameter of the kidneys of the examination person is automatically determined on the basis of the determined concentration of the urophanic substance in the urinary bladder and of the specific volume of the urinary bladder.

Magnetic resonance method and apparatus for determining a kidney function parameter

In a device, method and computer program product for generation of an exposure plan for irradiating a patient, at least one reference data set independent of the patient is provided, from which an attenuation of high-energy radiation upon passage through a reference body can be determined. A patient magnetic resonance image of the patient is adapted using the reference data set and an exposure plan is generated based on the patient magnetic resonance image and the patient-specific attenuation of high-energy radiation upon passage through the patient. The patient-specific attenuation of high-energy radiation upon passage through the patient is determined using the adaptation of the patient magnetic resonance image with the reference data set.

Device, method and computer-readable storage medium for generating an exposure plan to implement radiation therapy

Device, method and computer program product for generation of an exposure plan

In a method and an apparatus for automatic determination of objects that attenuate high energy/penetrating radiation by magnetic resonance, the magnetic resonance apparatus scans and prepares MR images, and the MR images contain information about the Trelaxation time constant. Subsequently, penetrating radiation-attenuating objects are determined in the MR images by means of the Trelaxation time constant.

Magnetic resonance method and apparatus for automatically determining objects that attenuate penetrating radiation

In a method for the operation of a medical diagnosis apparatus in an examination, a region of an examination subject to be imaged is placed in an imaging volume of the diagnosis apparatus, a first dataset of the region of interest is registered with a first set of operating parameters of the diagnosis apparatus, and the first set of operating parameters and the first dataset are stored. In a follow-up examination wherein the region of interest is again placed in the imaging volume, a follow-up dataset of the region of interest is registered with the apparatus operated with the stored, first set of operating parameters and the follow-up dataset is stored.

Method for operating a medical imaging diagnostic apparatus

In a magnetic resonance spectroscopy method, an excitation RF pulse is emitted with simultaneous emission of a first gradient during an excitation segment having a time duration corresponding to a transmission duration of the excitation RF pulse, a first refocusing RF pulse is emitted that has a first phase with respect to the excitation RF pulse with simultaneous emission of a second gradient during a first refocusing segment that temporally immediately follows the excitation segment and has a time duration corresponding to a transmission duration of the first refocusing RF pulse, an intermediate segment is allowed to elapse immediately temporally following the first refocusing segment for, among other things, temporal positioning of a secondary spin echo, a second refocusing RF pulse is emitted that has a second phase with respect to the excitation RF pulse, with simultaneous emission of a third gradient during a second refocusing segment immediately temporally following the intermediate segment and having a time duration corresponding to a transmission duration of the second refocusing RF pulse, the secondary spin echo is acquired during an acquisition segment immediately temporally following the second refocusing segment, and the aforementioned steps are repeated with a variation of phases of the RF pulses corresponding to a phase cycle.

Magnetic resonance spectroscopy method

In a method for evaluating a time signal that is generated as a magnetic resonance signal by means of magnetic resonance technology and that contains spectroscopic information, an apodized time signal is formed by multiplying the time signal by a bell-shaped window function, an apodized spectrum is formed by Fourier transformation of the apodized time signal, an apodized informational spectrum is generated by removing noise components from the apodized spectrum, an apodized informational time signal is formed by Fourier back-transformation of the apodized informational spectrum, and an informational time signal is formed by multiplying the apodized informational time signal by an inverse function that corresponds in at least one section to the inverse window function.

Method for evaluating a time signal that contains spectroscopic information

In a method for evaluating data that are generated by a magnetic resonance technique and contain spectroscopic information, at least two spikes of a spectrum of the data are detected, position that the detected spikes exhibit relative to one another within the spectrum is compared to spikes of known substances; and a known substance is allocated to the detected spikes given a coincidence of the comparison.

Method for evaluating magnetic resonance data containing spectroscopic information, by analysis of a frequency difference between spectrum spikes

Magnetic resonance tomography apparatus has a device whose spatial orientation can be modified in order to define a spatial orientation of a tomogram, and whose spatial position can be modified in order to define a spatial position of the tomogram, these definitions taking place before the exposure of a tomogram or acting on an existing three-dimensional image data set. The device has a planar stamped part in the form of a plate, or a display surface or has an oblong stamped part, the device is not fastened to the apparatus or at least, is not fastened to it fixedly, or is fastened to it via a carrier device, and the orientation and position of the device is acquired by position sensors.

Magnetic resonance tomography device having an operator control and monitoring device with a spatially modifiable apparatus for defining an orientation of a tomographic image

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Seigendorf, Germany

Stefan Roell