US 12,449,491 B2
Determining a heating effect of a MRI sequence on a diagnostic modality due to the temperature variations and method of predicting and compensating the variations
Ludwig Eberler, Neumarkt (DE); Ralf Ladebeck, Erlangen (DE); Philipp Hoecht, Lauf (DE); Sanghee Cho, Knoxville, TN (US); Robert A. Mintzer, Knoxville, TN (US); Nan Zhang, Knoxville, TN (US); Johannes Breuer, Forchheim (DE); and Martin Judenhofer, Knoxville, TN (US)
Assigned to Siemens Healthineers AG, Forchheim (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Sep. 14, 2021, as Appl. No. 17/474,443.
Claims priority of application No. 10 2020 211 844.2 (DE), filed on Sep. 22, 2020.
Prior Publication US 2022/0091206 A1, Mar. 24, 2022
Int. Cl. G01R 33/38 (2006.01); A61B 5/055 (2006.01); G01R 33/54 (2006.01)
CPC G01R 33/3804 (2013.01) [A61B 5/055 (2013.01); G01R 33/54 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for determining a heating effect caused by an imaging sequence of a second imaging modality on a detector of a first modality of a combined imaging device in dependence of a reference imaging sequence of the second imaging modality, the first modality being configured to acquire diagnostic data of an examination object, the second imaging modality including a magnetic resonance imaging device configured to acquire magnetic resonance imaging data of the examination object, and the first modality including a first modality temperature compensation unit configured to compensate a temperature variation of the detector, the method comprising:
performing the reference imaging sequence using the second imaging modality including the magnetic resonance imaging device, the reference imaging sequence including applying at least one of a gradient magnetic field or a high frequency electromagnetic field to an image acquisition region of the combined imaging device, and the reference imaging sequence including a plurality of magnetic resonance imaging parameters determining a property of the at least one of the gradient magnetic field or the high frequency electromagnetic field;
acquiring at least one temperature dependent parameter of the detector of the first modality; and
determining a correction parameter for the first modality temperature compensation unit in dependence of the plurality of magnetic resonance imaging parameters of the reference imaging sequence performed using the second imaging modality and the at least one temperature dependent parameter of the detector of the first modality.