Abstract: A method for imaging a subject using an MRI system includes determining a plurality of echo times and then acquiring a plurality of variable echo time signals corresponding to the plurality of echo times at a plurality of k-space locations. In the method, a water k-space data signal and a fat k-space data signal is generated for each of the plurality of k-space locations based on the plurality of variable echo time signals corresponding to that k-space location. Finally, the method includes generating a medical image of the subject based on water k-space data signals and fat k-space data signals at the plurality of k-space locations respectively.

Abstract: An apparatus for checking a component with a periodic structure having substructures arranged on a lattice, the apparatus comprising a measurement radiation source for creating measurement radiation, an optics system, and a camera device. The apparatus further comprises a phase mask device for influencing a phase angle of the measurement radiation and/or an amplitude of the measurement radiation. The phase mask device comprises a dual lattice which is reciprocal to a target shape of the lattice.

Abstract: A floor structure for a body of a vehicle includes two side sills spaced apart from each other in a transverse direction of the vehicle. A main floor element is disposed between the two side sills. An energy store is disposed under the main floor element. A crossmember element is disposed on an upper side of the main floor element and extends in the transverse direction of the vehicle between the two side sills. A hollow cross section of the crossmember element is delimited upwardly in the vertical direction of the vehicle by an upper flange of the crossmember element and is supplemented by the main floor element to form a closed hollow cross section. A reinforcement element is attached to the main floor element via a first attachment region and is attached to the upper flange via a second attachment region and a third attachment region.

Abstract: A computer-implemented method for generating a chemical shift artifact corrected reconstructed image from magnetic resonance imaging (MRI) data includes inputting into a trained deep neural network an image generated from the MRI data acquired during a non-Cartesian MRI scan of a subject. The method also includes utilizing the trained deep neural network to generate the chemical shift artifact corrected reconstructed image from the image, wherein the trained deep neural network was trained utilizing a tissue mixing model that models interactions between different tissue types to mitigate chemical shift artifacts. The method further includes outputting from the trained deep neural network the chemical shift artifact corrected reconstructed image.

Abstract: A mirror element (20) having a mirror surface (26) with an aspherical target region (22) and an extension region (28) adjoining an edge (24) of the target region (22) is disclosed, wherein the edge (24) is describable by an at least twice continuously differentiable closed curve (b), wherein the target region (22) has a respective edge curvature at each edge point(s) located on the curve, and wherein, when proceeding from the edge point(s) in a profile direction transverse to the edge (24), the extension region (28) has a curvature profile, which has no more than one local extremum and the absolute values of the curvatures of which are less than twice the absolute value of the edge curvature. Also disclosed are a lithography system (1) including a mirror element (20) and a method for providing a mirror element (20).

Abstract: A bodywork support structure for a vehicle includes two side sills that are spaced apart in a transverse direction where the two side sills have a reinforcing element that is disposed in a hollow space. A floor is disposed between the two side sills and connected to the two side sills and an energy store for storing electrical energy and/or a fuel for powering the vehicle is disposed under the floor. The reinforcing element is formed as a corner reinforcement disposed in a corner area where the corner reinforcement has a first connection area that is attached to an external wall, a second connection area that is attached to a lower flange, and a wall area that connects the first and second connection areas with each other across the corner. An open space is formed between the corner reinforcement and an internal wall in the transverse direction of the vehicle.

Abstract: A method for imaging a subject using an MRI system includes determining a plurality of echo times and then acquiring a plurality of variable echo time signals corresponding to the plurality of echo times at a plurality of k-space locations. In the method, a water k-space data signal and a fat k-space data signal is generated for each of the plurality of k-space locations based on the plurality of variable echo time signals corresponding to that k-space location. Finally, the method includes generating a medical image of the subject based on water k-space data signals and fat k-space data signals at the plurality of k-space locations respectively.

Abstract: A computer-implemented method for generating a chemical shift artifact corrected reconstructed image from magnetic resonance imaging (MRI) data includes inputting into a trained deep neural network an image generated from the MRI data acquired during a non-Cartesian MRI scan of a subject. The method also includes utilizing the trained deep neural network to generate the chemical shift artifact corrected reconstructed image from the image, wherein the trained deep neural network was trained utilizing a tissue mixing model that models interactions between different tissue types to mitigate chemical shift artifacts. The method further includes outputting from the trained deep neural network the chemical shift artifact corrected reconstructed image.

Abstract: A floor structure for a passenger car includes side sills which define at least one respective hollow space and which are connected to a vehicle floor. Crossmembers extend between the side sills. Respective energy absorption elements run along the side sills where the energy absorption elements have at least one non-linear longitudinal region in their longitudinal course.

Abstract: A front-end structure arrangement of a bodyshell of a motor vehicle includes a front-end structure which has a first longitudinal member and a second longitudinal member where the first longitudinal member and the second longitudinal member are connected to one another. An assembly carrier is fastened to the bodyshell, extends in a free space between the first longitudinal member and the second longitudinal member, and has a first side region that runs laterally along the first longitudinal member to form a first gap and has a second side region that runs laterally along the second longitudinal member to form a second gap. A first supporting element of a protective device is disposed in the first gap and runs laterally along the first longitudinal member to form a third gap between the first supporting element and the first longitudinal member. The third gap is smaller than the first gap.

Abstract: Methods for characterizing the surface shapes of optical elements include the following steps: carrying out, in an interferometric test arrangement, at least a first interferogram measurement on the optical element by superimposing a test wave, which has been generated by diffraction of electromagnetic radiation on a diffractive element and has been reflected at the optical element, carrying out at least one additional interferogram measurement on in each case one calibrating mirror for determining calibration corrections, and determining the deviation from the target shape of the optical element based on the first interferogram measurement carried out on the optical element and the determined calibration corrections. At least two interferogram measurements are carried out for the at least one calibrating mirror, which differ from one another with regard to the polarization state of the electromagnetic radiation.

Abstract: A superstructure arrangement of a motor vehicle shell construction of a motor vehicle includes a superstructure with first and second longitudinal girders running in a longitudinal direction of the motor vehicle. An auxiliary frame is fixed on the motor vehicle shell construction and is disposed below the first and second longitudinal girders and includes first and second longitudinal elements which diverge from each other from a back to a front in the longitudinal direction of the motor vehicle. A first front end region of the first longitudinal element juts out beyond the first longitudinal girder on a first outside in a transverse direction of the motor vehicle and a second front end region of the second longitudinal element juts out beyond the second longitudinal girder on a second outside in the transverse direction of the motor vehicle.

Abstract: An energy absorption component for a motor vehicle includes an energy absorption element that has a longitudinal element with first and second support regions that support the longitudinal element on a bumper crossmember of the motor vehicle and on a shell construction element of the motor vehicle, respectively. A strengthening element is disposed on an outside of the longitudinal element and has first and second support regions that support the strengthening element on the bumper crossmember and on the shell construction element, respectively. An end of the first support region of the strengthening element is disposed apart from an end of the first support region of the longitudinal element by a first distance and an end of the second support region of the strengthening element is disposed apart from an end of the second support region of the longitudinal element by a second distance.

Abstract: A floor structure for a body of a vehicle includes two side sills spaced apart from each other in a transverse direction of the vehicle. A main floor element is disposed between the two side sills. An energy store is disposed under the main floor element. A crossmember element is disposed on an upper side of the main floor element and extends in the transverse direction of the vehicle between the two side sills. A hollow cross section of the crossmember element is delimited upwardly in the vertical direction of the vehicle by an upper flange of the crossmember element and is supplemented by the main floor element to form a closed hollow cross section. A reinforcement element is attached to the main floor element via a first attachment region and is attached to the upper flange via a second attachment region and a third attachment region.

Abstract: A bodywork support structure for a vehicle includes two side sills that are spaced apart in a transverse direction where the two side sills have a reinforcing element that is disposed in a hollow space. A floor is disposed between the two side sills and connected to the two side sills and an energy store for storing electrical energy and/or a fuel for powering the vehicle is disposed under the floor. The reinforcing element is formed as a corner reinforcement disposed in a corner area where the corner reinforcement has a first connection area that is attached to an external wall, a second connection area that is attached to a lower flange, and a wall area that connects the first and second connection areas with each other across the corner. An open space is formed between the corner reinforcement and an internal wall in the transverse direction of the vehicle.

Abstract: Methods for characterizing the surface shapes of optical elements include the following steps: carrying out, in an interferometric test arrangement, at least a first interferogram measurement on the optical element by superimposing a test wave, which has been generated by diffraction of electromagnetic radiation on a diffractive element and has been reflected at the optical element, carrying out at least one additional interferogram measurement on in each case one calibrating mirror for determining calibration corrections, and determining the deviation from the target shape of the optical element based on the first interferogram measurement carried out on the optical element and the determined calibration corrections. At least two interferogram measurements are carried out for the at least one calibrating mirror, which differ from one another with regard to the polarization state of the electromagnetic radiation.

Abstract: A method includes using an illumination device to illuminate an object with electromagnetic radiation produced by a radiation source, and using a detector device to capture a respective intensity distribution in a diffraction image produced by the object in a plurality of measurement steps. The measurement steps differ from one another with respect to the illumination setting set by the illumination device. The method also includes determining at least one characteristic variable that is characteristic for the object on the basis of an iteratively performed comparison between the measurement values obtained within the scope of the measurement steps and model-based simulated values. The model-based simulated values are ascertained on the basis of a multiple layer model, in which the object is modeled by a multiple layer structure made of layers that are respectively separated from one another by an interface, wherein a location-dependent reflectivity is assigned to the interfaces.

Abstract: A superstructure arrangement of a motor vehicle shell construction of a motor vehicle includes a superstructure with first and second longitudinal girders running in a longitudinal direction of the motor vehicle. An auxiliary frame is fixed on the motor vehicle shell construction and is disposed below the first and second longitudinal girders and includes first and second longitudinal elements which diverge from each other from a back to a front in the longitudinal direction of the motor vehicle. A first front end region of the first longitudinal element juts out beyond the first longitudinal girder on a first outside in a transverse direction of the motor vehicle and a second front end region of the second longitudinal element juts out beyond the second longitudinal girder on a second outside in the transverse direction of the motor vehicle.

Abstract: A bodywork structure for a passenger vehicle includes a bodywork shell construction with two longitudinal girders and a flexible crossmember device attached to the two longitudinal girders. The flexible crossmember device has a first flexible crossmember and two energy absorption elements where the two energy absorption elements are respectively fixed to the two longitudinal girders and the first flexible crossmember is connected to the two longitudinal girders via the two energy absorption elements. A support framework is disposed between the two longitudinal girders and has a second flexible crossmember that is at least indirectly connected to the two longitudinal girders and is convexly curved in a direction of the first flexible crossmember. The support framework has a load divider disposed between the first flexible crossmember and the second flexible crossmember in the longitudinal direction of the passenger vehicle and extending in the transverse direction of the passenger vehicle.

Abstract: An energy absorption component for a motor vehicle includes an energy absorption element that has a longitudinal element with first and second support regions that support the longitudinal element on a bumper crossmember of the motor vehicle and on a shell construction element of the motor vehicle, respectively. A strengthening element is disposed on an outside of the longitudinal element and has first and second support regions that support the strengthening element on the bumper crossmember and on the shell construction element, respectively. An end of the first support region of the strengthening element is disposed apart from an end of the first support region of the longitudinal element by a first distance and an end of the second support region of the strengthening element is disposed apart from an end of the second support region of the longitudinal element by a second distance.