Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

The United States of America, As Represented by the Secretary, Department of Health and Human Services

Siemens Medical Solutions Usa, Inc.

Siemens Healthineers Ag

Siemens Corporation

Siemens Canada Limited

Northshore University Healthsystem

Westfaelische Wilhems-universitaet Muenster

Carmel Hayes

Xiaoguang Lu

Peter Speier

Marie-Pierre Jolly

Andreas Greiser

Jens Gühring

Michaela Schmidt

Christoph Guetter

Dorin Comaniciu

Markus Vester

Bogdan Georgescu

Mario Zeller

Stefan Popescu

Mariappan S Nadar

Frank Sauer

Ralf Ladebeck

Matthias Gebhardt

Robert R Edelman

Edgar Mueller

Hui Xue

Xiaoming Bi

Jens Guehring

Hasan Ertan Cetingul

Arne Littmann

Ying Sun

Edgar Müller

Shivraman Giri

Davide Piccini

Randall Kroeker

Mathias Blasche

Katrin Christel Sprung

Wilfried Landschütz

Klaus Schäfers

The disclosure relates to a technique for providing an image of diagnostically relevant area of a jaw region of a patient by means of a magnetic resonance apparatus by capturing information about the jaw region of the patient, which comprises at least one reference to a position and/or an extent of the diagnostically relevant area of the jaw region. The technique also includes adjusting a parameter of a magnetic resonance measurement as a function of the captured information about the jaw region of the patient, carrying out the magnetic resonance measurement with the adjusted parameter, capturing image data of the jaw region of the patient, reconstructing an image of the diagnostically relevant area of the jaw region as a function of the captured image data, and providing the image of the diagnostically relevant area of the jaw region of the patient.

Method and apparatus for imaging a jaw region

A computer-implemented method of performing deep learning based isocenter positioning includes acquiring a plurality of slabs covering an anatomical area of interest that comprises a patient's heart. For each slab, one or more deep learning models are used to determine a likelihood score for the slab indicating a probability that the slab includes at least a portion of the patient's heart. A center position of the patient's heart may then be determined based on the likelihood scores determined for the plurality of slabs.

Deep learning based isocenter positioning and fully automated cardiac MR exam planning

A magnetic resonance apparatus, for acquiring magnetic resonance data from a person who is asleep, includes a person support apparatus to provide a sleeping place; an acquisition arrangement including a radiofrequency coil arrangement for transmitting excitation pulses and for receiving magnetic resonance signals; and a controller, designed to operate the acquisition arrangement according to a magnetic resonance sequence for acquiring a magnetic resonance dataset from a region under examination of the person. The magnetic resonance apparatus includes a main magnetic field of strength less than 20 mT, in particular less than 10 mT, and the controller includes an acquisition unit for acquiring a magnetic resonance dataset via a prolonged magnetic resonance sequence having a total acquisition duration of more than one hour.

Magnetic resonance apparatus and method for operating a magnetic resonance apparatus, computer program and electronically readable data storage medium

A method includes introducing the examination object into an examination region of a combination device; recording emission computed tomography data over a measurement period and storing detection events and detection instants associated therewith; measuring magnetic resonance data of at least two subregions of the examination region at at least two instants during the recording period of the emission computed tomography data and storing the magnetic resonance data and the recording instants; determining motion information describing a motion of a region of the examination object at a first instant relative to the position at a second instant from the magnetic resonance data recorded at the first instant and the second instant, for each subregion; determining a motion model describing motion of the examination object, for the entire object, from information for the subregions; and calculating motion-corrected emission tomography data from detection events, detection instants and the motion model.

Method for motion correction of emission computed tomography data by way of magnetic resonance tomography data

A method of magnetic resonance (MR) imaging of a volume undergoing repetitive motion includes obtaining source slice data indicative of a plurality of source slices during the repetitive motion, and obtaining anchor slice data indicative of an anchor slice during the repetitive motion. The anchor slice intersects the plurality of source slices. The source slice data and the anchor slice data are reconstructed. A three-dimensional image assembly procedure is implemented to generate, for each phase of the repetitive motion, volume data based on a respective subset of the reconstructed source slice data. For each phase of the repetitive motion, the respective subset of slices is selected based on a correlation of the source slice data and the anchor slice data along an intersection between each source slice and the anchor slice. The source slice data of the selected subset is corrected for misalignment with the anchor slice data.

MRI 3D cine imaging based on intersecting source and anchor slice data

A method for operating a Magnetic Resonance (MR) imaging system including generating radio frequency (RF) excitation pulses in a volume of patient anatomy that includes a patient's heart to provide subsequent acquisition of associated RF echo data and generating slice select magnetic field gradients for phase encoding and readout RF data acquisition in the volume of patient anatomy. The method also includes acquiring a plurality of slices of an image of the volume of patient anatomy within a plurality of cycles representing time period between successive beats of the patient's heart. The method also includes causing, by a control processor, accelerated acquisition of two or more slices of the plurality of slices within a quiescent phase of each of the plurality of cycles. The method further includes applying, by the control processor, one or more saturation areas proximate to a target volume of the patient anatomy.

Methods and systems for acquiring multiple interleaved slices in magnetic resonance imaging

A method and system for automated view planning for cardiac magnetic resonance imaging (MRI) acquisition is disclosed. The method and system automatically generate a full scan prescription using a single 3D MRI volume. The left ventricle (LV) is segmented in the 3D MRI volume. Cardiac landmarks are detected in the automatically prescribed slices. A full scan prescription, including a short axis stack and 2-chamber, 3-chamber, and 4-chamber views, is automatically generated based on cardiac anchors provided by the segmented left ventricle and the detected cardiac landmarks in the 3D MRI volume.

Method and system for automatic view planning for cardiac magnetic resonance imaging acquisition

A system receives cardiac cine MR images consists of multiple slices of the heart over time. A series of short axis images slices are received. Long axis images are also received by the system, wherein a base plane defined by landmark points is detected. An intersection of the base plane with a contour of a heart chamber is determined for a plurality of slices in the short axis image. A volume for each of the contour slices covering the heart chamber, including for contours that are limited by base plane intersections, is evaluated. All slice volumes are summed to determine a total volume of the chamber. In one embodiment the chamber is a left ventricle and the landmark is a mitral valve. An ejection factor is determined.

Cardiac chamber volume computation from contours and base plane in cardiac MR Cine images

In a method and device to automatically determine a rest phase of the heart of an examination person in an imaging device, multiple images of the heart are acquired during a cardiac cycle and the rest phase of the heart is automatically determined by post-processing of the acquired images, and the determined rest phase is used for subsequent measurements.

Method and device to automatically determine the rest phase of the heart

A method is disclosed for processing medical image data which image a structure layer by layer, the image data for at least some layers respectively including a plurality of layer images. In at least one embodiment, the method includes segmentation of the structure in the layer images and determination respectively of a position of a point in a layer image. In at least one embodiment, at least one layer image set is furthermore compiled on the basis of the representative points in the layer images.

Method for processing medical image data and magnetic resonance apparatus for recording and processing medical image data

A method for automatically localizing left ventricle in medical image data includes acquiring a sequence of three-dimensional medical images spanning a cardiac cycle. Each of the images includes a plurality of two-dimensional image slices, one of which is defined as a template slice. The template slice of each medical image of the sequence is automatically cropped to include the heart and a margin around the heart based on temporal variations between pixels of the template slice throughout the sequence of medical images. The template slice of each medical image of the sequence is automatically contoured to determine the endo-cardial and epi-cardial boundaries for at least the end-diastolic and end-systolic phases. Localization information is generated for the left ventricle based on the determined endo-cardial and epi-cardial boundaries for at least the end-diastolic and end-systolic phases.

Automatic localization of the left ventricle in cardiac cine magnetic resonance imaging

In a method and apparatus for magnetic resonance imaging on the basis of a gradient echo sequence by excitation of nuclear spins and measurement of radio-frequency signals indicating the excited nuclear spins, a) the pulse frequency of the person to be examined is determined, b) the magnetization of the spins is prepared by means of an RF pulse block, c) a number of steps of the spin excitation as well as measurement of an RF response signal are implemented, with the measurement data along a trajectory established by projection gradients being acquired along a first slice established by a slice-selection gradient, d) items b) through c) are repeated multiple times for the first slice, with each repetition of the steps b) through c) ensuing within a time interval that is fixed in duration, and the interval is temporally displaced relative to the determined pulse frequency for at least one portion of the repetitions, and e) items b) through d) are repeated for various slices.

Method and apparatus for magnetic resonance imaging on the basis of a gradient echo sequence

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Munich, Germany

Carmel Hayes