Siemens Healthcare Gmbh

The General Hospital Corporation

Siemens Healthineers Ag

Albert-ludwigs-universitat Freiburg

Daniel Nicolas Splitthoff

Stephen Farman Cauley

Daniel Polak

Dominik Paul

Thorsten Feiweier

Tobias Kober

Julian Hossbach

Thomas Beck

Kawin Setsompop

Josef Pfeuffer

Michael Zenge

Wilfried Schnell

Maxim Zaitsev

Simon Bauer

Carsten Prinz

Randall Kroeker

Steffen Schroeter

Bryan Clifford

Borjan Aleksandar Gagoski

Melissa Haskell

Michael Roas-Löffler

Michael Schneider

Daniel Przioda

Xiang Gao

Christian Köglmeier

Wei-Ching Lo

Daniel Kraus

A method is provided for acquiring a magnetic resonance image dataset of an object, using an imaging protocol in which several k-space lines are acquired in one echo train, wherein the echo train may include one or several sub echo trains, and wherein the imaging protocol includes a plurality of echo trains. Within the method, a set of additional k-space lines within a central region of k-space is acquired a number of times per echo train, wherein the number is greater than 1, in order to detect movement of the object during the echo train. The sets of additional k-space lines are acquired at pre-determined positions within the echo trains. The disclosure is also directed to a method for generating a motion-corrected magnetic resonance image dataset from the dataset thus acquired, a magnetic resonance imaging apparatus, and a computer program.

Method for acquiring a magnetic resonance image dataset and generating a motion-corrected image dataset

The disclosure relates to a method for correcting a movement of an object occurring during an MR image acquisition. The method includes: determining a motion model describing possible movements of the object based on a defined number of degrees of freedom; detecting a motion of a marker provided on the object with a motion sensor; determining a description of the motion model in a common coordinate system; determining the motion of the marker in the common coordinate system; determining a first motion of the object in the common coordinate system using the description of the motion model, the first motion being the motion that best matches the determined motion of the marker in the common coordinate system using the defined number of degrees of freedom; and correcting the movement of the object based on the determined first motion in order to determine at least one motion corrected MR image.

Correcting object movement during MR imaging

A method for reconstructing a motion-corrected magnetic resonance image of a subject includes providing k-space magnetic resonance data including a plurality of shots, wherein each shot corresponds to an individual motion state of the subject. The method further includes providing motion parameters related to each motion state, determining redundancies across the motion states of the plurality of shots based on the motion parameters, compressing the plurality of motion states based on the determined redundancies across the motion states, and reconstructing the magnetic resonance image from the k-space magnetic resonance data based on the compressed plurality of motion states.

Method for reconstructing a motion-corrected magnetic resonance image of a subject

Systems and Methods that identify the effect of motion during a medical imaging procedure. A neural network is trained to translate motion induced deviations of a coil-mixing matrix relative to a reference acquisition into a motion score. This score can be used for the prospective detection of the most corrupted echo trains for removal or triggering a replacement by reacquisition.

Coil mixing error matrix and deep learning for prospective motion assessment

A method for operating a medical diagnostic system that is configured to use a system component of the diagnostic system to generate examination data of a person under examination during an examination procedure is provided. The examination procedure with control of the system component is controlled by a piece of control software, and a component driver exchanges control commands of the control software with the system component in order to control the system component. The method includes providing an event driver that communicates with the control software via an interface of the control software. Via the event driver, a first event is detected in the examination procedure and reported to the event driver. When the first event is detected in the examination procedure, the use of the system component in the examination procedure is modified to a first type defined by the event driver.

Medical diagnostic system with event drivers

A medical imaging apparatus, and a sensor arrangement for acquiring at least one item of patient movement information during a medical imaging examination, have at least one sensor element and a support apparatus, with the at least one sensor element arranged on the support apparatus. The support apparatus has a positioning element for positioning the support apparatus and at least one strut-like support element on which the at least one sensor element is removably arranged.

Medical imaging apparatus and sensor arrangement therefor for acquiring at least one item of patient movement information during a medical imaging examination

A method for acquiring a magnetic resonance data set of an object under examination by a magnetic resonance system using a scan sequence is provided. The scan sequence includes a succession of sequence blocks, and in each sequence block, there is at least one sub-block including an excitation section and/or a detection section. An excitation section includes at least one excitation pulse, and in a detection section, an echo signal or an echo train is acquired as a scan signal. At least one item of motion information is provided for each sub-block. The motion information contains information about a movement of the object under examination within a duration of the sub-block. Some of the sub-blocks are automatically repeated. At least the sub-blocks having motion information that exceeds a threshold value are repeated. The threshold value defines a motion amplitude.

Method for acquiring a magnetic resonance data set, data storage medium, computer program product, and magnetic resonance system

A method is used to carry out a magnetic resonance measurement with at least one echo train with n spin echoes and prospective movement correction. Movement correction data for each echo train is updated at the start of the echo train and is then updated again at most partially for the spin echoes.

Magnetic resonance measurement with prospective movement correction

Techniques are disclosed related to the compensation of phase offsets introduced into k-space lines as a result of encoding of blip gradients due when motion is present, which may be used for parallel magnetic resonance imaging (MRI) techniques such as blipped SMS or blipped CAIPIRINHA. The compensation of these additional phase offsets may prevent artifacts that would otherwise be present in the reconstructed images as a result of motion during the MRI scanning procedure. The additional phase offsets may be accounted for during the image acquisition phase of the MRI scan or, alternatively, during the image reconstruction phase.

Motion corrected blipped CAIPIRINHA and SMS

The disclosure relates to a computer implemented method for magnetic resonance imaging. The method includes: receiving at least a first and a second subset of k-space data as radio frequency signals emitted from excited hydrogen atoms of a subject; sampling the first and second subset of k-space data; choosing the first subset of k-space data as a base subset of k-space data; estimating motion parameters of the second subset of k-space data against the base subset of k-space data; and correcting the second subset of k-space data based on the estimated motion parameters of the second subset of k-space data. The motion parameters of the second subset of k-space data are parameters of a non-linear motion estimating function representing a motion of the subject between receiving the first subset of k-space data and receiving the second subset of k-space data.

Computer implemented method and system for magnetic resonance imaging

A method for setting an operating parameter of a medical device is provided. The method includes determining a current operating mode of the medical device. A time span available for setting the operating parameter is derived from the determined current operating mode. A setting range of the operating parameter necessary for fulfilling a pre-determined criterion is determined. A setting time necessary for setting the operating parameter according to the determined setting range is determined, and the operating parameter is set according to the setting range, provided the time span available for the setting is at least as long as the necessary setting time.

Growing community of inventors

Erlangen, Germany

Daniel Nicolas Splitthoff