Siemens Healthcare Gmbh

Manuel Schneider

Marcel Dominik Nickel

Martin Requardt

Elena Nioutsikou

A magnetic resonance tomography unit and a method is provided in which a patient couch may be moved in relation to the longitudinal direction into the patient tunnel in the transversal direction into a left-hand side extreme position and an opposite-lying right-hand side extreme position. Using an image acquisition facility in the left-hand side extreme position a right-hand side part is acquired and in the right-hand side extreme position a left-hand side part of the outer contour of the predetermined object is acquired. Using the image acquisition facility, the outer contour of the object is subsequently created from the left-hand side part of the outer contour and also from the right-hand side part of the outer contour.

Determining an outer contour during MR imaging

Techniques are disclosed for generating a quantitative parameter map from MR data. A specified signal model is adjusted to measured MR data. The signal model contains a time-dependent phase evolution map that specifies a respective separate phase evolution for each echo in a multi-echo sequence used to generate the MR data. Provision is also made for an image region that is to be represented to be divided up into a plurality of pixel fields, which include a plurality of pixels in each case. For all these pixel fields, at least the phase evolution for each echo is assumed to be equal for all the pixels in the respective pixel field, so as to achieve stability of the adjustment of the signal model to the MR data.

Generating a quantitative parameter map from magnetic resonance (MR) data

A method for multi-point magnetic resonance imaging including: receiving measured magnetic resonance data, which maps the magnetizations of a number of spin species in a measuring range with a number of echo times; carrying out an optimization for determining fitted magnetic resonance data on the basis of the measured magnetic resonance data, wherein an optimization function of the optimization implements a penalty for a higher rank of a matrix representing the fitted magnetic resonance data and a correction term for the localized evolution of a phase of the measured magnetic resonance data by means of field inhomogeneities or by means of a counterrotation of gradient fields with the number of echo times; and applying a spectral model to the fitted magnetic resonance data to determine magnetic resonance images with contrasts which correspond to the number of spin species.

Growing community of inventors

Erlangen, Germany

Manuel Schneider