Abstract: In a method, computer and medical imaging apparatus for the provision of confidence information, an automatic diagnosis system is provided to the computer. Medical image data acquired from a patient are received by or accessed by the computer. A measure of confidence is determined by the computer, which describes the reliability of a correct diagnosis of the medical image data by the diagnosis system. The confidence information concerning the reliability of the correct diagnosis of the medical image data by the diagnosis system is provided as an output from the computer, wherein the confidence information is based on the determined measure of confidence.

Abstract: A method for controlling an evaluation system for medical images of a patient is proposed. Medical images of the patient acquired at different time points are stored in an image database. Upon reception of a user command associated with a time-dependent evaluation command including at least one evaluation parameter describing an evaluation to be performed and identification information describing the patient, medical images of the patient fulfilling a relevancy criterion depending on the evaluation parameter and acquired at different time points are retrieved from the image database. The retrieved images are registered to each other in at least one registration process. Finally, a composite evaluation image data set including a time series of evaluation images is derived from the registered retrieved images and output to the user.

Abstract: In a method and apparatus for supporting a user when positioning an accessory for a magnetic resonance examination on an examination object, the actual position of the accessory is acquired by an acquisition unit, and a target position of the accessory is determined by a determination unit. The actual position and the target position of the accessory are compared with regard to deviation of the actual position from the target position of the accessory. Output information representing any deviation that is found to exist is provided to a user via an output unit.

Abstract: A method for determining a change over time in a biomarker in a region to be examined of a patient is provided. The change is determined from magnetic resonance data using a magnetic resonance measuring system with sequences and protocols for measuring the biomarkers by functional resting state connectivity by rsfMRI, perfusion values, magnetic resonance spectra of voxels, or morphometry of organs. A control unit has programs which evaluates the biomarker and a data memory which stores the results of the evaluation and additional data. During a first examination, a quantity result of the biomarkers is determined and stored in the data memory. During a follow-up examination, at least one previous item of the result and additional data from the first examination stored in the data memory are used for determining a quantitative change in the biomarker.

Abstract: In a method and magnetic resonance (MR) apparatus for monitoring a radiation therapy of a patient, first MR image data are acquired with a quantitative magnetic resonance method before an irradiation of a target area of the patient, and second MR image data are acquired with the quantitative magnetic resonance method after the irradiation of the target area of the patient. The first MR image data and the second MR image data are compared, and output information is generated on the basis of a result of the comparison.

Abstract: A medical imaging unit includes a patient receiving area, a housing unit at least partly surrounding the patient receiving area, a detector unit, and a movement detection unit. The movement detection unit includes two or more detection elements configured for detecting a distance from the detection elements to the patient, and including an evaluation unit. The evaluation unit is configured to establish from detected movement of the individual detection elements a three-dimensional movement of the patient within the patient receiving area.

Abstract: A magnetic resonance tomography unit includes a control unit, a transmitting unit having one or a plurality of transmitting antennae, a selector, and a high-frequency unit having a signal output in signal connection with the transmitting unit. The transmitting unit is configured to irradiate high-frequency energy using the selector and the one or plurality of transmitting antennae optionally into only a first region of a plurality of different regions in a patient.

Abstract: A method for determining a change over time in a biomarker in a region to be examined of a patient is provided. The change is determined from magnetic resonance data using a magnetic resonance measuring system with sequences and protocols for measuring the biomarkers by functional resting state connectivity by rsfMRI, perfusion values, magnetic resonance spectra of voxels, or morphometry of organs. A control unit has programs which evaluates the biomarker and a data memory which stores the results of the evaluation and additional data. During a first examination, a quantity result of the biomarkers is determined and stored in the data memory. During a follow-up examination, at least one previous item of the result and additional data from the first examination stored in the data memory are used for determining a quantitative change in the biomarker.

Abstract: A method for determining a change over time in a biomarker in a region to be examined of a patient is provided. The change is determined from magnetic resonance data using a magnetic resonance measuring system with sequences and protocols for measuring the biomarkers by functional resting state connectivity by rsfMRI, perfusion values, magnetic resonance spectra of voxels, or morphometry of organs. A control unit has programs which evaluates the biomarker and a data memory which stores the results of the evaluation and additional data. During a first examination, a quantity result of the biomarkers is determined and stored in the data memory. During a follow-up examination, at least one previous item of the result and additional data from the first examination stored in the data memory are used for determining a quantitative change in the biomarker.

Abstract: In a method for the acquisition of magnetic resonance (MR) data relating to a pre-determined two-dimensional volume segment of an examination object with an MR apparatus, a randomized determination of points to be sampled in the raw data space is made, such that the raw data space is undersampled when only the determined points to be sampled are then sampled. MR data relating to the specified points to be sampled are acquired by operation of the MR apparatus. Alternatively, a determination of points to be sampled in the raw data space is made using radial or spiral trajectories in k-space that begin in the center k-space. Each specified point to be sampled is then moved to an FFT grid point, and MR data relating to the determined points to be sampled is implemented by operation of the MR apparatus.

Abstract: A method for controlling an evaluation system for medical images of a patient is proposed. Medical images of the patient acquired at different time points are stored in an image database. Upon reception of a user command associated with a time-dependent evaluation command including at least one evaluation parameter describing an evaluation to be performed and identification information describing the patient, medical images of the patient fulfilling a relevancy criterion depending on the evaluation parameter and acquired at different time points are retrieved from the image database. The retrieved images are registered to each other in at least one registration process. Finally, a composite evaluation image data set including a time series of evaluation images is derived from the registered retrieved images and output to the user.

Abstract: In a method and apparatus for recording magnetic resonance data of an object to be examined, two-dimensional k-space is scanned along lines extending in a readout direction within an acquisition trajectory. Undersampling is carried out along at least some of the lines and, during an acquisition section proceeding through the entirety of k-space in the readout direction, multiple jumps occur as a result of gradient pulses in the phase coding direction perpendicular to the readout direction. These jumps can occur between adjacent lines.

Abstract: In a method and apparatus for supporting a user when positioning an accessory for a magnetic resonance examination on an examination object, the actual position of the accessory is acquired by an acquisition unit, and a target position of the accessory is determined by a detection unit. The actual position and the target position of the accessory are compared with regard to deviation of the actual position from the target position of the accessory. Output information representing any deviation that is found to exist is provided to a user via an output unit.

Abstract: In a method to determine a control sequence for a magnetic resonance imaging system in order to acquire echo signal-based raw magnetic resonance data in k-space along one or more trajectories on the basis of the control sequence, the control sequence is optimized so that, to control a gradient magnetic field for at least a predetermined portion of the control sequence, a change of an attribute of the gradient magnetic field is limited. The limitation takes place so that a momentary amplitude change rate of the gradient magnetic field falls below a predetermined amplitude change rate limit value, and/or so that a momentary direction change rate of the gradient magnetic field falls below a predetermined direction change rate limit value, and/or so that a momentary gradient change rate of the gradient magnetic field that is based on a combination of the momentary amplitude change rate and the momentary direction change rate falls below a predetermined gradient change rate limit value.

Abstract: In a method to optimize a magnetic resonance sequence of a magnetic resonance apparatus and a magnetic resonance apparatus operated according to such a method, optimization of the timing of the magnetic resonance sequence is implemented by adopting a magnetic resonance sequence as a starting sequence includes a first time interval set of one or more first time intervals and a second time interval set of one or more second time intervals, wherein the first time intervals of the first time interval set are to be left unmodified with regard to an optimization of the duration. The magnetic resonance sequence is automatically analyzed to identify the first time intervals of the first time interval set and the second time intervals of the second time interval set in the magnetic resonance sequence. The duration of at least one second time interval of the second time interval set is then automatically optimized.

Abstract: In a method for optimizing a magnetic resonance sequence of a magnetic resonance apparatus, a magnetic resonance sequence is provided to a computer, the sequence having a number of fixed point time intervals that are to be left unmodified, and a number of modifiable time intervals which may be optimized. The magnetic resonance sequence is automatically analyzed in the computer in order to identify the fixed point time intervals and the modifiable time intervals in the magnetic resonance sequence. At least one gradient pulse, which occurs during at least one modifiable time interval of the number of modifiable time intervals, is optimized by taking the first moment of this at least one gradient pulse into account.

Abstract: In a method, computer and medical imaging apparatus for the provision of confidence information, an automatic diagnosis system is provided to the computer. Medical image data acquired from a patient are received by or accessed by the computer. A measure of confidence is determined by the computer, which describes the reliability of a correct diagnosis of the medical image data by the diagnosis system. The confidence information concerning the reliability of the correct diagnosis of the medical image data by the diagnosis system is provided as an output from the computer, wherein the confidence information is based on the determined measure of confidence.

Abstract: A method and a device for protocol adjustment for medical imaging, and a medical imaging device and a computer program product for carrying out the method, wherein the method includes providing a location-specific feature of an imaging device, ascertaining at least one location-dependent protocol boundary condition from a comparison with at least one database, and creating at least one protocol adjusted to the at least one location-dependent protocol boundary condition. At least one of the providing, ascertaining, or creating occurs automatically.

Abstract: A magnetic resonance tomography unit includes a control unit, a transmitting unit having one or a plurality of transmitting antennae, a selector, and a high-frequency unit having a signal output in signal connection with the transmitting unit. The transmitting unit is configured to irradiate high-frequency energy using the selector and the one or plurality of transmitting antennae optionally into only a first region of a plurality of different regions in a patient.

Abstract: In a method and a magnetic resonance (MR) system for functional MR imaging of a predetermined volume segment of THE brain of a living examination subject, an RF excitation pulse is radiated into the subject and at least one magnetic field gradient is activated, and MR data of the predetermined volume segment is acquired beginning at a predetermined echo time after the RF excitation pulse. The echo time is in a time period of 10 ?s to 1000 ?s.