Abstract: A shim coil device for compensating for basic magnetic field inhomogeneities during medical magnetic resonance imaging of a breast of a patient, said shim coil has a housing with a contact surface that configures to bear against a patient, and at least one shim coil element having a shim coil axis. The shim coil is arranged on the patient such that the at least one shim coil axis has an angle of inclination ? to the contact surface and/or to a patient surface, where ? is ?45° and ? is ?135°.

Abstract: In a method and magnetic resonance apparatus for creating an optimizing pulse sequence for selective RF excitation in the magnetic resonance apparatus, the pulse sequence has an excitation event block, which has an RF pulse and a selection gradient. Nuclear spins are excited in a predefined volume section in a predetermined manner by this excitation event block, which is designed to so that the spins inside the volume section have the same phase position after the excitation event block of the pulse sequence. The selection gradient does not have a polarity reversal.

Abstract: In a method and magnetic resonance apparatus for automated establishing of the resonant frequency or resonant frequencies, especially of protons for magnetic resonance experiments, at least one signal, especially an FID is acquired and Fourier transformed to a spectrum. The number of resonance peaks of the spectrum is determined and the resonant frequency or resonant frequencies are established dependent on the number of peaks.

Abstract: In a method and apparatus for generating a magnetic resonance (MR) image MR data are acquired from a subject as datasets in parallel with multiple RF coils, with first parallel dataset being acquired with a first parameter set and at least one further parallel dataset being acquired with a second parameter set. A first intermediate image dataset and at least one further intermediate image dataset are reconstructed with at least one of (a) the first intermediate image dataset being reconstructed from said first parallel dataset using a calibration data item derived from said at least one further parameter set, and (b) said at least one further intermediate image dataset is reconstructed from said at least one further parallel dataset using a calibration data item derived from said first parameter set. A combination image dataset is generated by combining said first intermediate image dataset and said at least one further intermediate dataset.

Abstract: A method of MRI entails recording and storing MR signals from an object to produce an old set of data. A further measurement of the object is then initiated at a later time to record new MR data, whereby k-space is undersampled in the further measurement. The old data are corrected for changes in the new position of the object, for changes in the sensitivity and exact spatial positioning of the receiver coils as well as for changes in the actual field shimming. The old and new data are then combined to create a new, high resolution image of the object.

Abstract: In a method and magnetic resonance apparatus for creating an optimizing pulse sequence for selective RF excitation in the magnetic resonance apparatus, the pulse sequence has an excitation event block, which has an RF pulse and a selection gradient. Nuclear spins are excited in a predefined volume section in a predetermined manner by this excitation event block, which is designed to so that the spins inside the volume section have the same phase position after the excitation event block of the pulse sequence. The selection gradient does not have a polarity reversal.

Abstract: A shim coil device for compensating for basic magnetic field inhomogeneities during medical magnetic resonance imaging of a breast of a patient, said shim coil has a housing with a contact surface that configures to bear against a patient, and at least one shim coil element having a shim coil axis. The shim coil is arranged on the patient such that the at least one shim coil axis has an angle of inclination ? to the contact surface and/or to a patient surface, where ? is ?45° and ? is ?135°.

Abstract: In a method and apparatus for generating a magnetic resonance (MR) image MR data are acquired from a subject as datasets in parallel with multiple RF coils, with first parallel dataset being acquired with a first parameter set and at least one further parallel dataset being acquired with a second parameter set. A first intermediate image dataset and at least one further intermediate image dataset are reconstructed with at least one of (a) the first intermediate image dataset being reconstructed from said first parallel dataset using a calibration data item derived from said at least one further parameter set, and (b) said at least one further intermediate image dataset is reconstructed from said at least one further parallel dataset using a calibration data item derived from said first parameter set. A combination image dataset is generated by combining said first intermediate image dataset and said at least one further intermediate dataset.

Abstract: In a method and magnetic resonance apparatus for automated establishing of the resonant frequency or resonant frequencies, especially of protons for magnetic resonance experiments, at least one signal, especially an FID is acquired and Fourier transformed to a spectrum. The number of resonance peaks of the spectrum is determined and the resonant frequency or resonant frequencies are established dependent on the number of peaks.

Abstract: A method of MRI entails recording and storing MR signals from an object to produce an old set of data. A further measurement of the object is then initiated at a later time to record new MR data, whereby k-space is undersampled in the further measurement. The old data are corrected for changes in the new position of the object, for changes in the sensitivity and exact spatial positioning of the receiver coils as well as for changes in the actual field shimming. The old and new data are then combined to create a new, high resolution image of the object.

Abstract: A method for RARE magnetic resonance imaging comprising slice selective excitation of two or more slices and of one or more nuclei, followed by refocusing of these slices and application of gradient pulses which cause a division of the signal into spin echoes and stimulated echoes, is characterized by application of refocusing slice selective RF pulses, which are placed to fulfill the echo-spacing CPMG condition for each slice and by arrangement of gradient pulses which cause the phase accumulated by spins in each slice between two consecutive refocusing RF pulses corresponding to that slice to be equal, thus fulfilling the CPMG phase accumulation condition. Thereby, the obtainable signal can be increased and stabilized.

Abstract: A method for RARE magnetic resonance imaging comprising slice selective excitation of two or more slices and of one or more nuclei, followed by refocusing of these slices and application of gradient pulses which cause a diversion of the signal into spin echoes and stimulated echoes, is characterized by application of refocusing slice selective RF pulses, which are placed to fulfill the echo-spacing CPMG condition for each slice and by arrangement of gradient pulses which cause the phase accumulated by spins in each slice between two consecutive refocusing RF pulses corresponding to that slice to be equal, thus fulfilling the CPMG phase accumulation condition. Thereby, the obtainable signal can be increased and stabilized.