The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 29, 2022

Filed:

Jul. 23, 2020
Applicant:

Siemens Healthcare Gmbh, Erlangen, DE;

Inventors:

Daniel Niederlöhner, Erlangen, DE;

Gudrun Ruyters, Erlangen, DE;

Axel vom Endt, Erlangen, DE;

Assignee:

SIEMENS HEALTHCARE GMBH, Erlangen, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/54 (2006.01); G01R 33/00 (2006.01); G01R 33/28 (2006.01); G01R 33/385 (2006.01);
U.S. Cl.
CPC ...
G01R 33/543 (2013.01); G01R 33/0023 (2013.01); G01R 33/288 (2013.01); G01R 33/3852 (2013.01);
Abstract

Methods and systems for controlling patient stimulating effects in MR imaging. The methods and systems include calculating a first effective stimulus duration independently for each pulse flank of an MRI sequence individually and calculating a second effective stimulus duration for which a respective history of a changing gradient field during the sequence is taken into account. Dependent on an evaluation of both the first and second effective stimulus durations a threshold value for an allowable rate of change in the magnetic gradient field is then calculated. The respective MRI sequence is then evaluated against the calculated threshold value to determine whether or not the respective MRI sequence is safe to apply.


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