US 11,719,779 B2
Adaptive reconstruction of MR data
Dominik Paul, Bubenreuth (DE); Marcel Dominik Nickel, Herzogenaurach (DE); Nadine Dispenza, Erlangen (DE); and Simon Bauer, Baunach (DE)
Assigned to Siemens Healthcare GmbH, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on May 6, 2022, as Appl. No. 17/662,280.
Claims priority of application No. 21172537 (EP), filed on May 6, 2021.
Prior Publication US 2022/0357414 A1, Nov. 10, 2022
Int. Cl. G01R 33/56 (2006.01); G01R 33/48 (2006.01); G01R 33/567 (2006.01)
CPC G01R 33/5608 (2013.01) [G01R 33/4818 (2013.01); G01R 33/5676 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for an adaptive reconstruction of magnetic resonance (MR) data, comprising:
providing MR data including MR data of a core region of a k-space and MR data of a peripheral region of the k-space, wherein:
the core region of the k-space comprises at least three core segments,
each core segment of the at least three core segments includes mutually parallel k-space rows and the core segments are arranged relative to each other in such a way that the parallel k-space rows incorporated by therein are mutually parallel,
the MR data of the peripheral region comprises a simulated signal not equal to zero, and
the MR data of the core region is acquired by multiple time-sequential carrying out of steps in order in each case to capture the MR data of an echo train, wherein the steps comprise:
switching an excitation pulse; and
switching a plurality of refocusing pulses,
wherein between two successive refocusing pulses, one reading out each takes place of a k-space row, with each echo of the echo train, associated with one of the at least three core segments,
ascertaining a peripheral signal based on the MR data of the peripheral region;
determining a scaling factor for each of the core segments by taking into account the peripheral signal and a mean signal intensity of the MR data for the respective core segment;
scaling the MR data of the core region by taking into account the MR data of each of the core segments and that of the scaling factor corresponding to the respective core segment;
generating filtered MR data by combining the scaled MR data of the core region with the MR data of the peripheral region; and
reconstructing image data from the filtered MR data.