US 9,753,110 B2Granted

Method and magnetic resonance system for acquiring magnetic resonance data

AssigneeSiemens Aktiengesellschaft

InventorDavid Andrew Porter

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Abstract

In a method for acquiring magnetic resonance data with a magnetic resonance system using a magnetic resonance sequence, the sequence has a first partial sequence in which magnetic resonance data are acquired for multiple slices that have to be acquired simultaneously, from which image data for the individual slices are calculated by a reconstruction algorithm. The sequence also has a second partial sequence for determining additional data, which are used to evaluate and/or assess the magnetic resonance data, and which have a spatial resolution that is lower than the magnetic resonance data, in which radio-frequency pulses and readout processes take place in a slice-specific manner through a time offset within a single measuring process, in which a single continuous excitation period with the radio-frequency pulses and a single continuous readout period with the readout processes follow one another, so that separate additional data are directly determined for each slice.

Claims10

Dependent claims

A method for acquiring magnetic resonance data, comprising:

operating a magnetic resonance apparatus with a magnetic resonance sequence to acquire magnetic resonance data from a subject situated in the magnetic resonance apparatus;
in a first portion of said sequence, operating said magnetic resonance apparatus to simultaneously acquire magnetic resonance signals from respective multiple slices of the subject;
in a second portion of said sequence that follows said first portion, operating said magnetic resonance apparatus to acquire additional data with a spatial resolution that is lower than a spatial resolution at which said magnetic resonance data are acquired, by radiating a radio-frequency pulse and implementing a slice-specific readout of said additional data for respective slices among said multiple slices, at respective readout times that are chronologically offset with respect to each other following a single continuous excitation of nuclear spins in the subject by said radio-frequency pulses with an individual readout for each slice, thereby obtaining a separate set of additional data for each slice among said multiple slices;
and
in a processor, reconstructing a magnetic resonance image of said slices in a reconstruction algorithm dependent on said additional data.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/495,146Filed 24 Sep 2014
Priority: DE 10 2013 219 12024 Sep 2013
Published: US 2015/0084629 A126 Mar 2015
Granted: 5 Sep 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01R 33/54
NMR imaging systems: signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
G01R 33/4835
Using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices: of multiple slices
G01R 33/5611
By reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences: parallel magnetic resonance imaging, e.g.…
G01R 33/56341
Of moving material, e.g. flow contrast angiography: diffusion imaging

Family

US 2015/0084629 A1Pre-grant publication · published 26 Mar 2015
US 9,753,110 B2This patent

From the US filing history. Foreign family members aren’t listed.

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