Abstract: Accelerated acquisition of scan data by means of magnetic resonance to enable short echo times so that scan data of substances can also be acquired with a transversal relaxation time.

Abstract: A reconstruction module may include at least one parameter interface to receive a set of measurement sequence parameters and a memory interface to a memory having a trained mathematical model stored in the memory. The trained mathematical model determines a results dataset containing at least one iterative denoising parameter and at least one edge enhancement parameter for at least one received measurement sequence parameter. A control of the reconstruction module controls a reconstruction of the medical images using a reconstruction algorithm based on the determined parameters for parameterizing an iterative denoising function and an edge enhancement function.

Abstract: In a method and apparatus for acquiring and reconstructing a four-dimensional dynamic magnetic resonance (MR) image data record, MR data are continuously acquired by radial scanning of an examination region along radial k-space lines, and a dynamic region of the examination region, in which said dynamic procedure is relevant, is determined, as well as a non-dynamic region, which is not relevant to the dynamic procedure. Static image data are reconstructed from all of the acquired MR data, and image data therein originating from the non-dynamic region are marked and are then not used for reconstructing a dynamic image data record for the dynamic region.

Abstract: A method is provided for monitoring a current respiratory curve of a patient with regard to a recording region which is imaged by magnetic resonance scanning. The method includes acquiring a reference respiratory curve of the patient over a plurality of respiratory cycles; establishing a respiration state of the patient that is suitable for the magnetic resonance scanning based on the reference respiratory curve; determining at least one reference recording time window and a trigger threshold value for starting a magnetic resonance scan based on the previously determined respiration state; carrying out at least one magnetic resonance scan within the determined reference recording time window of the current respiratory curve using the trigger threshold value; and continually acquiring and monitoring the current respiratory curve during the magnetic resonance scan in the reference recording time window.

Abstract: Techniques are disclosed for providing a process plan of a magnetic resonance examination incorporating n protocols where n?1. The process plan includes selecting an examination strategy with a number n of metaprotocols and a chronological order of the n metaprotocols. Each of the n metaprotocols includes a protocol category having a plurality of different variants of a protocol of the one protocol category. The process plan further includes selecting a variant of a protocol of the one protocol category of an ith metaprotocol, where 1?i?n, repeating the step of selecting the variant of a protocol of the one protocol category of an ith metaprotocol until i=n, and providing the magnetic resonance examination process plan including the n protocols.

Abstract: A local coil for an MRI scanner, an MRI scanner and a method for operating the MRI scanner are provided. The local coil includes a plurality of n antenna coils and at least one analog-to-digital converter having a signal link to the antenna coils. The local coil includes a compression device configured to compress the n digital input data streams into m digital output data streams. The n digital input data streams are mapped to an m-dimensional space with m base vectors.

Abstract: In a method for controlling a magnetic resonance tomography system for a Magnetic Resonance Fingerprinting (MRF) measurement: a dictionary group including at least two dictionaries is provided/created, each of the at least two dictionaries containing a multiplicity of different intensity profiles with a specific sampling scheme; a preliminary recording of magnetic resonance tomography (MRT) measurements is created; a sampling scheme is determined/defined based on the preliminary recording; a dictionary is selected from the at least two dictionaries of the dictionary group based on the preliminary recording; and an MRF measurement is performed using the defined sampling scheme and an MRF evaluation based on the selected dictionary.

Abstract: An MR imaging method with an imaging workflow is provided. Within the scope of the MR imaging method, at least one breath-holding command is output to a patient. An MR imaging is performed with an MR imaging method that may be used with free breathing. A breathing movement of the patient is detected based on measured data acquired when performing the MR imaging method. A time relationship is determined between the breathing movement of the patient and the breath-holding command. The imaging workflow is modified as a function of the determined time relationship. A breathing monitoring device and a magnetic resonance imaging system are also provided.

Abstract: A local coil for an MRI scanner, an MRI scanner and a method for operating the MRI scanner are provided. The local coil includes a plurality of n antenna coils and at least one analog-to-digital converter having a signal link to the antenna coils. The local coil includes a compression device configured to compress the n digital input data streams into m digital output data streams. The n digital input data streams are mapped to an m-dimensional space with m base vectors.

Abstract: A reconstruction module may include at least one parameter interface to receive a set of measurement sequence parameters and a memory interface to a memory having a trained mathematical model stored in the memory. The trained mathematical model determines a results dataset containing at least one iterative denoising parameter and at least one edge enhancement parameter for at least one received measurement sequence parameter. A control of the reconstruction module controls a reconstruction of the medical images using a reconstruction algorithm based on the determined parameters for parameterizing an iterative denoising function and an edge enhancement function.

Abstract: The disclosure relates to techniques for providing a process plan of a magnetic resonance examination, said process plan incorporating n protocols where n?1, comprising selecting an examination strategy comprising a number n of metaprotocols and a chronological order of the n metaprotocols, wherein each of the n metaprotocols comprises a protocol category comprising a plurality of different variants of a protocol of the one protocol category. The process plan further includes selecting a variant of a protocol of the one protocol category of an ith metaprotocol, where 1?i?n, repeating the step of selecting the variant of a protocol of the one protocol category of an ith metaprotocol until i=n, and providing the magnetic resonance examination process plan comprising the n protocols.

Abstract: A method is provided for generating a signal-to-noise improved magnetic resonance (MR) image of an object under examination in an MR system using a compressed sensing technology. The method includes determining a first MR signal data set of the object under examination in which a corresponding k-space is randomly subsampled; determining a location dependent sensitivity map for each of at least one receiving coil used to detect MR signals of the first MR signal data set in the location where the object under examination is located; and determining the MR image using an optimization process of the compressed sensing technology in which a location dependent regularization parameter is used, wherein the location dependent regularization parameter is determined based on the location dependent sensitivity map.

Abstract: In a method and magnetic resonance (MR) apparatus for reducing artifacts in an image dataset reconstructed from MR raw data that were acquired by radial sampling using different coil elements, for each of at least some of the coil elements, exclusion information is determined that identify MR data from that coil element that are responsible for at least one artifact, by a comparison of a sensitivity map, which defines a spatial reception capability of that coil element, with at least one comparison dataset obtained from at least a portion of the MR data from that coil element. At least the MR data identified from the exclusion information are excluded from the reconstruction of the image dataset.

Abstract: Generating a magnetic resonance image dataset includes providing a raw dataset that has been acquired such that the raw dataset is spatially and/or temporally undersampled. A regularization parameter is determined in an automated manner, and an image dataset is generated from the raw dataset using the regularization parameter in a compressed sensing technique.

Abstract: Accelerated acquisition of scan data by means of magnetic resonance to enable short echo times so that scan data of substances can also be acquired with a transversal relaxation time.

Abstract: A method is provided for generating a signal-to-noise improved magnetic resonance (MR) image of an object under examination in an MR system using a compressed sensing technology. The method includes determining a first MR signal data set of the object under examination in which a corresponding k-space is randomly subsampled; determining a location dependent sensitivity map for each of at least one receiving coil used to detect MR signals of the first MR signal data set in the location where the object under examination is located; and determining the MR image using an optimization process of the compressed sensing technology in which a location dependent regularization parameter is used, wherein the location dependent regularization parameter is determined based on the location dependent sensitivity map.

Abstract: An apparatus and a method for spatial encoding in magnetic resonance tomography using a radio frequency signal are provided. A first set of parameters from a first frequency and from a first amplitude, and from a second frequency and a second amplitude is determined by the magnetic resonance tomograph, and corresponding signals are generated by a radio frequency device and transmitted by an antenna apparatus. A first gradient above the Larmor frequency of the nuclear spins is generated by the Bloch-Siegert effect. The same thing ensues with a second set of parameters that differs from the first set of parameters at least in one frequency or amplitude and therefore generates a second, different gradient.

Abstract: A method for correcting a B0 inhomogeneity in a magnetic resonance scan with a magnetic resonance tomograph is provided. The magnetic resonance tomograph includes a controller, a radio frequency unit, and a transmitting antenna. In the method, the controller determines a transmission signal that is suitable for correcting an effect of an inhomogeneity of a static B0 magnetic field in an examination volume by the Bloch-Siegert effect. The transmission signal is emitted into the examination volume.

Abstract: A method for generating a spatially resolved magnetic resonance dataset using a coil arrangement includes providing at least one correction datum based on receiver characteristics of the coil arrangement. The method also includes providing a magnetic resonance dataset with spatially resolved signal intensity data, and correcting the at least one signal intensity datum in the magnetic resonance dataset by the correction datum before or after providing the magnetic resonance dataset.

Abstract: The invention relates to a method for reconstructing magnetic resonance images, to a magnetic resonance apparatus and to a computer program product. According to the method, measurement data is acquired in an acquisition period. The measurement data is used to determine a motion curve over the acquisition period. In addition, at least one magnetic resonance image is reconstructed. In this process, the acquisition period is separated into a plurality of sub-periods by one or more separating periods and/or separating times in which the motion curve satisfies a defined motion condition, and each magnetic resonance image is reconstructed using the measurement data from at least one sub-period.