US 11,880,914 B2
Reconstruction of MR images by means of wave-CAIPI
Nadine Dispenza, Erlangen (DE); Dominik Paul, Bubenreuth (DE); and Mario Zeller, Erlangen (DE)
Assigned to Siemens Healthcare GmbH, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Apr. 26, 2021, as Appl. No. 17/240,069.
Claims priority of application No. 10 2020 205 667.6 (DE), filed on May 5, 2020.
Prior Publication US 2021/0350592 A1, Nov. 11, 2021
Int. Cl. G06T 11/00 (2006.01); G01R 33/565 (2006.01); G01R 33/56 (2006.01)
CPC G06T 11/005 (2013.01) [G01R 33/5608 (2013.01); G01R 33/56509 (2013.01); G06T 2210/41 (2013.01)] 17 Claims
OG exemplary drawing
1. A method for MR-based reconstruction of images of a patient, the method comprising:
monitoring whether a value of a movement of the patient in at least one motion direction during an MR scan exceeds a respective threshold value;
performing reconstruction with a Wave-CAIPI method on a basis of identical calibrated PSF subfunctions for all k-space lines when the value of the movement of the patient does not exceed the respective threshold value; and
when the value of the movement does exceed the respective threshold value:
providing a number of bins corresponding to sequential value ranges of the patient movement in at least one motion direction,
assigning the k-space lines to the bins based on a value of the movement during the respective acquisition of the k-space line,
performing a calibration of PSF subfunctions for at least two bins on the basis of the k-space lines assigned to said bins, and
reconstructing an image by a Wave-CAIPI method in such a way that the PSF subfunctions associated with the assigned bins are used for the respective k-space lines.