Koninklijke Philips Corporation N.v.

Koninklijke Philips Electronics N.v.

Philips Intellectual Property & Standards Gmbh

Philips Gmbh

Peter Mazurkewitz

Christoph G Leussler

Peter Vernickel

Daniel Wirtz

Julien Senegas

Oliver Lips

Christian Findeklee

Ingo Schmale

Christoph Günther Leussler

Sascha Krueger

Martin Bergtholdt

Thomas Netsch

Jochen Keupp

Axel Saalbach

Steffen Weiss

Volkmar Schulz

Daniel Bystrov

Kay Nehrke

Mariya Ivanova Doneva

Christian Stehning

Stefanie Remmele

Claudia Hannelore Igney

Peter Börnert

Matthias Hamsch

Christopher Günther Leussler

Peter Venickel

Jukku Iimari Tanttu

Kai-Michael Luedeke

Christoph Leussler

For a radio frequency (RF) receiver system () for use in a magnetic resonance (MR) imaging system, a solution for compensating residual coupling of RF receive coil elements () in the radio frequency (RF) receiver () system shall be created. This is achieved by a radio frequency (RF) receiver system for use in a magnetic resonance (MR) imaging system, the RF receiver system () comprising at least two simultaneously used RF receive coil elements (), wherein the RF receive coil element () comprises a signal generator () for providing a compensation signal and an excitation path (), wherein the excitation path () is configured to couple the compensation signal into the RF receive coil element (), for reducing residual coupling in the RF receiver system () by means of the compensation signal coupled into the RF receive coil element (). The present invention also refers to a magnetic resonance (MR) imaging system, a method for active decoupling of a radio frequency (RF) receiver system () of a magnetic resonance (MR) imaging system, a software package for a magnetic resonance (MR) imaging system, a software package for upgrading a magnetic resonance (MR) imaging system and a computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the steps of the method as described in the claims.

Radio frequency (RF) receiver system with active decoupling

For a radio frequency (RF) receiver system a solution for a safe operation of the radio frequency (RF) receiver system in magnetic resonance imaging shall be ensured. This is achieved by a radio frequency (RF) receiver system for use in a magnetic resonance (MR) imaging system the RF receiver system, wherein the RF receiver system comprises at least one RF receive coil with at least one detune circuit (). The detune circuit () comprises at least a pair of crossed diodes (D, D) with an interface, wherein the interface is configured to measure an electrical current in the detune circuit () to determine the proper function of the PIN diodes (D, D) by measuring the detune direct current for a first detune voltage polarity and for a second reversed detune voltage polarity. The present invention also provides a magnetic resonance (MR) imaging system, a method for ensuring a safe radio frequency (RF) receiver system operation in magnetic resonance imaging, a software package for a magnetic resonance (MR) imaging system, a software package for upgrading a magnetic resonance (MR) imaging system and a computer program product.

Radio frequency receiver with detection of a malfunction of a detune circuit

The invention provides for a medical instrument () comprising a camera system (″) for imaging a portion () of a subject () reposing on a subject support (). The medical instrument further comprises a display system () for rendering a position feedback indicator (). The display system is configured such that the position feedback indicator is visible to the subject when the subject is reposing on the subject support. The execution of the machine executable instructions () causes a processor () controlling the medical instrument to: acquire () a base position image () using the camera system; repeatedly () acquire a subsequent image () using the camera system; repeatedly () calculate an image transformation () from voxels of at least a portion of the base position image to voxels of the subsequent image by inputting the base position image and the subsequent image into an image transformation algorithm (); and repeatedly () render a position feedback indicator () on the display, wherein the position feedback indicator is controlled by the image transformation.

Position feed back indicator for medical imaging

The invention also refers to a flexible coil element for a flexible coil array, for a magnetic resonance imaging apparatus. The invention also refers to a flexible coil array, for a magnetic resonance imaging apparatus, for indicating a loading state of a flexible coil element being positioned on at least one inductive element. The invention also refers to a method for indicating a loading state of a flexible coil element being positioned on at least one inductive element. The flexible coil element is comprised by a flexible coil array, wherein the flexible coil array comprises at least one flexible coil element. Furthermore, the invention refers to a software package comprising instructions for carrying out the method steps.

Indication of a loading state of a flexible coil element

The invention relates to a magnetic resonance coil array () of a magnetic resonance system having a distributed cable routing realized by a self-compensated radiofrequency choke (). The magnetic resonance coil array () comprises multiple magnetic resonance receive coils (), an input-output unit (), and multiple coaxial cables () interconnecting the magnetic resonance receive coils () with the input-output unit (). The coaxial cable () comprises the self-compensated radiofrequency choke (). The self-compensated radiofrequency choke () allows to replace conventional bulky resonant radiofrequency traps used in conventional magnetic resonance coil arrays and allows implementing the distributed cable routing. The self-compensated radiofrequency choke () comprises a choke housing () having a toroidal form and the coaxial cable (), wherein the coaxial cable () is wound around the choke housing () in a self-compensated winding pattern. The self-compensated winding pattern provides compensation for a B1-excitation field of a magnetic resonance system and eliminates the need for the self-compensated radiofrequency choke () to be resonant to the B1-excitation field.

Magnetic resonance coil array and self-compensated radiofrequency choke

The invention provides for a medical instrument () comprising: a subject support () comprising a support surface (); a camera system (); and a signal system (). The execution of the machine executable instructions () cause a processor () controlling the medical instrument to: receive () a list of selected objects () each with a selected coordinate (); and signal () the list of selected objects. The Execution of the machine executable instructions further causes the processor to repeatedly: acquire () the camera data using the camera system; input () the camera data into a neural network to generate a list of placed objects (); determine () a list of missing objects () by comparing the list of selected objects to the list of placed objects; indicate () using the signal system the list of missing objects; determine () a list of misplaced objects () by comparing the selected coordinate for each of the list of objects to the coordinates of the placed objects on the support surface; and indicate () using the signal system the list of misplaced objects.

Camera assisted subject support configuration

An energy depositing therapy system (), comprising:

Real time energy depositing therapy system controlled by magnetic resonance rheology

A rheology system () includes a rheology transducer device () for introducing mechanical waves into a subject of interest (). The rheology transducer device () includes multiple transducers (), a driving device () for driving the rheology transducer device (), a sensor device () for sensing mechanical waves at the subject of interest (), and a control device () for receiving input from the sensor device () and for controlling the driving device () based on the received input from the sensor device (). An MR rheology system () includes the above rheology system () and an MR imaging system () adapted to control the rheology system (). A rheology method includes with the rheology system (), driving the rheology transducer device () to introduce mechanical waves into the subject of interest (), sensing mechanical waves at the subject of interest (), and performing feedback control.

Rheology system and MR rheology system with rheology sensor feedback control

A dual- or multi-resonant RF/MR transmit and/or receive antenna () especially in the form of a planar antenna or a volume array antenna (also called antenna array) is used for MR image generation of at least two different nuclei like e.g.H,F,He,C,Na or other nuclei having different Larmor frequencies. The antenna is coupled by an inductive coupling device (LI) with related transmit/receive channels (T/R). By such an inductive coupling, the tuning and matching of the antenna at the different resonant frequencies is easier than in case of a galvanic connection. The dual- or multi-resonant RF/MR transmit and/or receive antenna is used in an MR imaging apparatus.

Multi-resonant T/R antenna for MR image generation

The invention relates to the field of magnetic resonance (MR) imaging. It concerns an oscillation applicator for MR rheology. It is an object of the invention to provide an oscillation applicator without restrictions regarding the usability for certain body regions. According to the invention, the oscillation applicator comprises at least one transducer which generates a reciprocating motion at a given frequency and a belt () mechanically coupled to the transducer, which belt () is designed to be wrapped around a patient's body (). Moreover, the invention relates to a MR device () and to a method of MR imaging.

Oscillation applicator for MR rheology

A handheld oscillation applicator () for use in a magnetic resonance rheology imaging system (), for applying mechanical oscillations to at least a portion of a subject of interest (), the handheld oscillation applicator () comprising a housing (), at least one transducer unit () configured to output mechanical energy, a piston () that is mechanically linked to the at least one transducer unit (), the piston () including a first end (), a second end (), and an opening () that extends between the first end () and the second end (), wherein the housing () comprises at least one opening (), and the at least one opening () of the housing () and the opening () of the piston () at least partially overlap with regard to a housing opening direction () defined by an opening center () of the opening () of the housing () at a first surface () and an opening center () of the opening () of the housing () at a second surface (); and an oscillation applicator system (), including: a handheld oscillation applicator (), a transducer driving unit () for energizing the at least one transducer unit (), a sensing unit () configured to determine a physical quantity that is representative of an amplitude of mechanical oscillations being applied to at least the portion of the subject of interest (), and to provide an output signal representing the determined physical quantity, at least one closed-loop control circuit for maintaining a mechanical displacement amplitude of the transducer unit () at a selected level, wherein the closed-loop control circuit is configured to provide an output signal for controlling the transducer driving unit (), based on the output signal received from the sensing unit ().

Handheld oscillation applicator for use in a magnetic resonance rheology imaging system

An MRI system () acquires magnetic resonance data () from a subject. The execution of machine-executable instructions () causes a processor () to: receive () a baseline medical image () data descriptive of one or more internal structures () of the subject; receive () a baseline scan geometry (); acquire () survey magnetic resonance data () from the subject by controlling the magnetic resonance imaging system with survey pulse sequence data, wherein the survey pulse sequence data comprises instructions for controlling the magnetic resonance imaging system to acquire magnetic resonance data descriptive of a three-dimensional volume () of the subject; reconstruct () the survey magnetic resonance data into a three-dimensional survey image (); calculate () location data by processing the three dimensional survey image with an organ detection algorithm (), wherein the location data is descriptive of a target region (); assign () a predefined region of interest () to the three dimensional survey image using the location data; calculate () registration data () by registering the baseline medical image to the three dimensional survey image.

Automated scan planning for follow-up magnetic resonance imaging

An endorectal coil () includes a tube (), a spreader (), and one or more electrically conductive elements (). The tube () is configured for insertion into the rectum (). The spreader () is configured to be positioned at a distal end of the tube () and mechanically spread to compress surrounding tissue after the tube () is inserted. The one or more electrically conductive elements () are tuned to receive magnetic resonance data disposed on at least one of the tube (), the spreader (), and adjacent the tube and spreader.

Endorectal prostate coil with open access for surgical instruments

The invention provides for a medical instrument () comprising a magnetic resonance imaging system (), a transducer () for mechanically vibrating at least a portion of the subject within the imaging zone. Instructions cause a processor () controlling the medical instrument to: control () the transducer to vibrate; control () the magnetic resonance imaging system to repeatedly acquire the magnetic resonance data () using a first spatially encoding pulse sequence (); control () the magnetic resonance imaging system to acquire navigator data () using a second spatially encoding pulse sequence (); construct () a set of navigator profiles () using the navigator data; determine () at least one parameter () descriptive of transducer vibrations using the set of navigator profiles; and reconstruct () at least one magnetic resonance rheology image () from the magnetic resonance data.

Measurement of magnetic resonance rheology transducer vibrations using navigators

A method includes displaying an iconic image of the human body and a list of predetermined anatomical regions. The method further includes displaying, in response to a user selected anatomical region, a scan box over a sub-portion of the iconic image. The method further includes receiving an input indicative of at least one of a scan box location of interest or a scan box geometry of interest, with respect to the anatomical region, of the first user. The method further includes at least one of re-locating or changing a geometry of the first initial scan box, in response thereto, creating a first user defined scan box for the first user. The method further includes creating a first transformation between a first template image representative of the selected anatomical region and the iconic image with the first user defined scan box for the first user, and storing the first transformation.

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Hamburg, Germany

Peter Mazurkewitz