Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Uwe Böttcher

Stefan Röll

Jan Ruff

A method for determining a spoiler gradient of a magnetic resonance (MR) system is provided. At least one shim parameter that defines a shim magnetic field for compensating for Bmagnetic field inhomogeneities in a measurement volume of the MR system is received. As a function of the at least one shim parameter, at least one spoiler parameter that defines a spoiler gradient for canceling out a transverse magnetization is determined. The spoiler gradient is applied together with the shim magnetic field in a measurement of the MR system.

Shim-dependent spoiler gradients

In a method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy data acquisition using polarization transfer for a strongly-sensitive atomic nucleus type (A) with involvement of an MR-active, weakly-sensitive atomic nucleus type (X), all RF pulses are radiated sequentially, i.e. with defined time interval relative to one another, such that at no point in time of the sequence are different RF pulses radiated simultaneously or overlapping, and the sequence of the RF pulses causes a polarization transfer of the two involved atomic nucleus types (A), (X).

Method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy

A volume coil for a magnetic resonance (MR) tomography apparatus has a number of array coils or coil parts arranged on at least one coil carrier. The coil carrier annularly encloses or the coil carriers annularly encloses or enclose a cross-sectional area that can be varied by modifying the position of the coil carriers or parts thereof relative to one another.

Volume coil for a magnetic resonance tomography apparatus

In a method for switching a localized saturation pulse in magnetic resonance spectroscopy or magnetic resonance imaging, magnetic field gradients are switched during the saturation pulse, with the steps of establishing the examination region, establishing the position of the saturation pulse relative to the examination region, determining the spectral position of the signal to be saturated, and selecting the magnetic field gradients dependent on the position of the saturation pulse relative to the examination region and dependent on the spectral position of the signal to be saturated.

MR method for minimizing the chemical shift artifact, using a localized spatially dependent saturation pulse

In a hybrid CSI procedure for a magnetic resonance device, for a predeterminable volume of interest of the hybrid CSI procedure, the magnetic resonance device automatically defines an increased volume that exceeds the volume of interest such that all magnetic resonance signal-emitting substances of interest contained in the volume of interest are excited in order to create the magnetic resonance signals to be evaluated spectroscopically, and a saturation volume directly adjoining the volume of interest is automatically defined and saturated before the excitation by the magnetic resonance device such that no unwanted magnetic resonance signals are created from outside the volume of interest.

Growing community of inventors

Uttenreuth, Germany

Uwe Böttcher