Koninklijke Philips Corporation N.V.

Umesh Suryanarayana Rudrapatna

Jaladhar Neelavalli

Vijayananda Jagannatha

Rupesh Vakkachi Kandi

Suthambhara Nagaraj

Vidya Ms

Suja Saraswathy

Ashvin Srinivasan

Sharun S Thazhackal

Karthik Gopalakrishnan

Naveen Bajaj

Proposed concepts thus aim to provide schemes, solutions, concept, designs, methods and systems pertaining to updating a magnetic field (B) map of a subject during a magnetic resonance imaging (MRI) examination or during image reconstruction. In particular, when a subject moves, the magnetic field inside the magnetic bore changes. As a result, any Bmap obtained prior to the movement of the subject may be inaccurate. Accordingly, an initial Bmap is updated to reflect changes in the Bmap caused by the movement of the subject. This can be achieved by determining a Bmap of the subject based on a Bprediction model, instead of spending additional scanning time to acquire another Bmap.

Method for updating a magnetic field map during a MRI examination

Disclosed herein is a medical system () comprising a memory () storing machine executable instructions () and a Bfield estimation module (); and a computational system (). Execution of the machine executable instructions causes the computational system to receive () an initial magnetic resonance image () that comprises a magnitude component and is descriptive of a first region () of interest of a subject (). Execution of the machine executable instructions further causes the computational system to perform at least one iteration of the following: receive () subsequent k-space data () descriptive of subsequent region of interest () of the subject; calculate () an estimated Bfield mapping () for the subsequent region of interest from the initial magnetic resonance image by inputting the initial magnetic resonance image into the Bfield estimation module; and reconstruct () a corrected magnetic resonance image () from the subsequent k-space data and the estimated Bfield mapping.

Estimation of Binhomogeneities for improved acquisition and/or reconstruction of magnetic resonance images

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Bengaluru, India

Umesh Suryanarayana Rudrapatna