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Ingmar Graesslin

Ingmar Graesslin, Hamburg DE

Patent application numberDescriptionPublished
20110043205REAL-TIME LOCAL AND GLOBAL SAR ESTIMATION FOR PATIENT SAFETY AND IMPROVED SCANNING PERFORMANCE - In a method and apparatus to enable increased RF duty cycle in high field MR scans, a specific energy absorption rate (SAR) calculation processor (02-24-2011
20110163749RF SHIMMING WITH RF POWER REGULARIZATION USING A MULTI-CHANNEL RF TRANSMIT SYSTEM FOR MRI - A magnetic resonance system comprises: a magnetic resonance scanner (07-07-2011

Ingmar Graesslin, Boenningstedt DE

Patent application numberDescriptionPublished
20080204021Flexible and Wearable Radio Frequency Coil Garments for Magnetic Resonance Imaging - A radio frequency apparatus for at least one of (i) receiving and (ii) exciting a magnetic resonance signal includes an item of clothing (08-28-2008
20080211501Method and Curcuit Arrangement For Operating Multi-Channel Transmit/Receive Antenna Devices - Methods and circuit arrangements for operating multi-channel transmit/receive antenna devices or arrangements especially for use in magnetic resonance imaging (MRI) systems are disclosed, by which a fully independent control of complete multi-channel RF transmit and receive chains can be conducted in a flexible way and new options like RF shimming, transmit sensitivity encoding (TransmitSENSE), RF encoding, determination of S- or Z-matrix prior to spin echo measurements, calibration, SAR (specific absorption rate) reduction etc. can be utilized or improved.09-04-2008
20080258728Active Decoupling of Transmitters in Mri - A magnetic resonance imaging system includes a coupling compensation processor (10-23-2008
20080265890Simultaneous Mr-Excitation of Multiple Nuclei with a Single Rf Amplifier - A medical imaging system (10-30-2008
20090128153METHOD AND CIRCUIT ARRANGEMENT FOR OPERATING MULTI-CHANNEL TRANSMIT/RECEIVE ANTENNA DEVICES - Methods and circuit arrangements for operating a multi-channel transmit/receive antenna device or arrangement, especially for use in a magnetic resonance imaging (MRI) system, are disclosed by which RF amplifiers can be used to their full peak power capability without running the risk that the RF amplifier is damaged due to excessive reflected power at its output. Furthermore by evaluating certain forward and reflected power signals patient safety is achieved with respect to monitoring the limits of the specific absorption rate.05-21-2009
20100141257RF TRANSMITTER WITH DIGITAL FEEDBACK FOR MRI - A method and an RF transmit system for generating RF transmit signals for feeding an RF transmitter (06-10-2010
20100141259METHOD AND RF TRANSMITTER ARRANGEMENT FOR GENERATING RF FIELDS - A multi-channel RF transmitter arrangement comprising a plurality of RF transmitter elements (e) like RF antennas, antenna elements, coils or coil elements, for generating an RF field, especially for use in a magnetic resonance imaging (MRI) system for exciting nuclear magnetic resonances (NMR), and a method for generating such an RF field is disclosed. The RF transmitter elements (e) are segmented in a plurality of segments (s06-10-2010
20110156704B1-MAPPING AND B1L-SHIMMING FOR MRI - The invention relates to a method of acquiring MRI image data comprising the following steps: performing a 3-dimensional B1 mapping of a first volume using a first voxel size, selecting an MRI protocol, performing the B1-shim in accordance with the MRI protocol, performing the MRI protocol to acquire MRI imaging data of a second volume using a second voxel size, wherein the first voxel size is larger than the second voxel size, wherein the first volume is larger than the second volume, and wherein the second volume is contained within the first volume.06-30-2011

Patent applications by Ingmar Graesslin, Boenningstedt DE