Abstract: In a method and magnetic resonance (MR) apparatus for generating a combined MR image of an examination object, a first image data record of an examination object, generated from magnetic resonance data recorded with a first reception coil, is loaded into a computer. A second image data record of the examination object, generated from magnetic resonance data recorded with a second reception coil, wherein the first and the second reception coils are different reception coils, is also loaded into a computer. At least one interim image data record is generated by the computer by applying a mask function to the first and/or second image data record. An interim image data record is combined in the computer with the image data record to which no mask function was applied, or with the other interim image data record, to form a combined MR image.

Abstract: In a method and magnetic resonance (MR) apparatus for creating a maximum intensity projection of a volume of an examination subject, MR data are acquired for a number of slices of the volume, and an MR image is reconstructed for each of the slices that MR data have acquired in order to create a maximum intensity projection for each of the slices. The maximum intensity projection of the respective slice is shown on a display. The slices, which have a thickness of at least 15 mm, have various slice directions, in order to display the maximum intensity projections from various directions.

Abstract: Techniques are disclosed for acquiring magnetic resonance data of an object with a magnetic resonance imaging apparatus. A slice group is imaged whose slices define a contiguous imaging volume and which contains a first number of slices. In a number of concatenations, the magnetic resonance data for subgroups of the slices, each containing a respective second number of slices depending on the first number of concatenations, are acquired, and shimming is performed to increase field homogeneity in the imaging volume. To define the subgroups, the imaging volume is subdivided into at least two disjoint contiguous sub-volumes, and at least two subgroups are defined for each sub-volume, each subgroup only containing non-adjacent slices in the sub-volume. During acquisition of the magnetic resonance data of each subgroup, shimming is at least restricted to the respective sub-volume.

Abstract: Techniques are disclosed for acquiring magnetic resonance data of an object with a magnetic resonance imaging apparatus. A slice group is imaged whose slices define a contiguous imaging volume and which contains a first number of slices. In a number of concatenations, the magnetic resonance data for subgroups of the slices, each containing a respective second number of slices depending on the first number of concatenations, are acquired, and shimming is performed to increase field homogeneity in the imaging volume. To define the subgroups, the imaging volume is subdivided into at least two disjoint contiguous sub-volumes, and at least two subgroups are defined for each sub-volume, each subgroup only containing non-adjacent slices in the sub-volume. During acquisition of the magnetic resonance data of each subgroup, shimming is at least restricted to the respective sub-volume.

Abstract: In a magnetic resonance (MR) method and apparatus for reconstructing MR tomography images with variable time resolution, a preliminary reconstruction of preview images takes place, using raw data acquired in a closed time period at different times from the same body region of a patient. Scan data are acquired from the preview images and/or from the raw data, the scan data quantitatively representing the introduction of a contrast medium over a time span. Diagnostic reconstruction parameters are then specified, which designate time portions in which reconstruction is to be conducted with different time resolutions, based on the scan data. The reconstruction of diagnostic MR tomography images then takes place, using the diagnostic reconstruction parameters.

Abstract: In a magnetic resonance (MR) apparatus and operating method, a first pulse sequence is executed in order to acquire echo signals from a target volume produced by radiation of a radio-frequency (RF) excitation pulse, thereby obtaining an original measurement dataset. A reference measurement dataset is then acquired by executing another pulse sequence immediately after acquisition of the aforementioned echo signals. These steps are repeated until the original measurement dataset has reached a predetermined degree of completeness that is still incomplete according to the Nyquist criterion. The original measurement dataset is then completed using the reference measurement dataset and a parallel acquisition technique.

Abstract: The disclosure relates to a method for reconstructing a preview of a magnetic resonance examination, a magnetic resonance apparatus, and a computer program product. The method includes recording a first set of magnetic resonance data, from which a second set of magnetic resonance data is selected. Based on the second set of magnetic resonance data, a preview is reconstructed.

Abstract: In a method and magnetic resonance apparatus for performing at least one adjusting measurement for the magnetic resonance apparatus, a localizing measurement is performed using the magnetic resonance apparatus and a localization dataset is created, and at least one examination region on the localization dataset. At least one examination region of the localization dataset is selected, and at least one adjusting measurement is performed according to the at least one selected examination region. The at least one adjusting measurement can be the calculation of a radio-frequency pulse amplitude, the calculation of a system frequency and the calculation of at least one current of at least one shim coil.

Abstract: In a method and magnetic resonance (MR) apparatus for creating a maximum intensity projection of a volume of an examination subject, MR data are acquired for a number of slices of the volume, and an MR image is reconstructed for each of the slices that MR data have acquired in order to create a maximum intensity projection for each of the slices. The maximum intensity projection of the respective slice is shown on a display. The slices, which have a thickness of at least 15 mm, have various slice directions, in order to display the maximum intensity projections from various directions.

Abstract: A magnetic resonance data acquisition unit is operated according to an imaging protocol wherein at least one echo spacing exists following radiation of an excitation RF pulse, via an RF channel that includes an RF amplifier, and a subsequent readout of an echo. Loading of the RF amplifier is reduced by lengthening the echo spacing in the imaging protocol. One or more refocusing RF pulses are radiated with a lengthened echo spacing.

Abstract: In a method and magnetic resonance (MR) apparatus for generating a combined MR image of an examination object, a first image data record of an examination object, generated from magnetic resonance data recorded with a first reception coil, is loaded into a computer. A second image data record of the examination object, generated from magnetic resonance data recorded with a second reception coil, wherein the first and the second reception coils are different reception coils, is also loaded into a computer. At least one interim image data record is generated by the computer by applying a mask function to the first and/or second image data record. An interim image data record is combined in the computer with the image data record to which no mask function was applied, or with the other interim image data record, to form a combined MR image.

Abstract: In a method and apparatus for acquiring a magnetic resonance image data set of a scan area of an examination subject, the image data are acquired with a magnetic resonance apparatus having a transmitter coil that emits a radio-frequency signal having at least two transmission channels so that different polarizations of the radio-frequency signal are produced, and a magnetic resonance sequence is used to acquire raw data for the magnetic resonance image data set, wherein raw data are acquired during at least two scanning operations with the magnetic resonance sequence, with different polarizations of the radio-frequency signals being used for at least two of the at least two scanning operations, following which the magnetic resonance image data set is determined by averaging the raw data.

Abstract: In a magnetic resonance (MR) apparatus and operating method, a first pulse sequence is executed in order to acquire echo signals from a target volume produced by radiation of a radio-frequency (RF) excitation pulse, thereby obtaining an original measurement dataset. A reference measurement dataset is then acquired by executing another pulse sequence immediately after acquisition of the aforementioned echo signals. These steps are repeated until the original measurement dataset has reached a predetermined degree of completeness that is still incomplete according to the Nyquist criterion. The original measurement dataset is then completed using the reference measurement dataset and a parallel acquisition technique.

Abstract: A method for synchronizing an MR imaging process with a breathing rest state of a patient during an examination using held breath is provided. In the method, an instruction is output to the patient to hold his breath. In addition, the respiratory behavior of the patient is identified in real time. An MR imaging process is started according to the identified respiratory behavior. A breathing synchronization device and a magnetic resonance imaging system are also provided.

Abstract: The disclosure relates to a method for reconstructing a preview of a magnetic resonance examination, a magnetic resonance apparatus, and a computer program product. The method includes recording a first set of magnetic resonance data, from which a second set of magnetic resonance data is selected. Based on the second set of magnetic resonance data, a preview is reconstructed.

Abstract: In a method for planning a spectroscopy measurement of an examination object by operation of a magnetic resonance apparatus, an image data record is selected that includes at least two images of a magnetic resonance measurement of the examination object, an isometric and/or isogonal region is determined in a first image of the at least two images, a region of interest is selected according to the isometric and/or isogonal region determined on the first image, and the first image is displayed, at least one further, second image of the image data record is displayed according to the selected region of interest, and the spectroscopy measurement is planned according to the displayed images.

Abstract: In a method and apparatus for automatic magnetic resonance imaging of a patient, an MR overall image is composed from several MR partial images. An MR overview image is received by a process that determines several scanning ranges based on the MR overview image. The MR scanning ranges are characterized by a length along a first direction. For all MR scanning ranges: the length along the first direction is set equal to the length of the longest MR scanning range in the first direction.

Abstract: In a method for planning a spectroscopy measurement of an examination object by operation of a magnetic resonance apparatus, an image data record is selected that includes at least two images of a magnetic resonance measurement of the examination object, an isometric and/or isogonal region is determined in a first image of the at least two images, a region of interest is selected according to the isometric and/or isogonal region determined on the first image, and the first image is displayed, at least one further, second image of the image data record is displayed according to the selected region of interest, and the spectroscopy measurement is planned according to the displayed images.

Abstract: In a combined magnetic resonance (MR)-emission tomography apparatus, MR scan data and emission tomography scan data are acquired from a subject in the apparatus. MR image data are generated from the MR scan data, and an attenuation map is generated from the same MR scan data that were used to generate the MR image data. Emission tomography image data are generated by applying a correction algorithm, which uses the attenuation map, to the emission tomography scan data. The MR image data and the emission tomography emission data are then presented.

Abstract: In a method and magnetic resonance apparatus for performing at least one adjusting measurement for the magnetic resonance apparatus, a localizing measurement is performed using the magnetic resonance apparatus and a localization dataset is created, and at least one examination region on the localization dataset. At least one examination region of the localization dataset is selected, and at least one adjusting measurement is performed according to the at least one selected examination region. The at least one adjusting measurement can be the calculation of a radio-frequency pulse amplitude, the calculation of a system frequency and the calculation of at least one current of at least one shim coil.