Siemens Healthcare Patente

Described is a cooling system for a magnetic resonance imaging, MRI, apparatus, the cooling system comprising: a ramp down load configured to ramp down current flowing in an electromagnet of the MRI apparatus by dissipating electrical energy in the form of heat; and at least one cooling device configured to cool the ramp down load; wherein the at least one cooling device is configured to be powered by a voltage generated across at least a portion of the ramp down load when current flowing in the electromagnet is passed through the ramp down load. A magnetic resonance imaging, MRI, apparatus; a method of cooling a ramp down load of a magnetic resonance imaging, MRI, apparatus; and a method of testing a cooling system of a magnetic resonance imaging, MRI, apparatus are also described.

The invention relates to a thermal switch (60) for a cryogenic system, comprising: an inner part (61); an outer part (62); and a bung element (63); wherein the bung element (63) comprises a material with a higher thermal expansion coefficient than a material of the inner part (61), and wherein the bung element (63) is configured to bring the inner part (61) into contact with the outer part (62) when exceeding a predefined temperature level. The invention also relates to a cryogenic system (30) and a magnetic resonance device (10) comprising an inventive thermal switch (60).

Systems and methods for estimating an incident angle and trajectory of therapy devices within Intra-cardiac Echocardiography (ICE) images in real time in order to provide guidance for ICE manipulation to maintain continuous therapy device tip visibility. An ICE imaging sequence is acquired. A pre-trained ultrasound foundation model is used to extract spatial and temporal features in the sequence of ICE images. A transformer based temporal deep learning model is used that integrates the extracted spatial while incorporating historical passing points and angular information to in order to track the catheter tip within the ICE imaging plane. The tip tracking transformer based temporal deep learning model improves upon existing incident angle and trajectory model estimations in ICE procedures by improving prediction accuracy and consistency.

For pose estimation of an imaging catheter, an image or other scan data from the imaging catheter is input to a machine-learned model, which is configured by training to output the pose of the imaging catheter. A position sensor is not needed as only an image as input is sufficient for accurate pose estimation. Manual adjustment or reliance on user expertise is limited as the machine-learned model directly provides the pose.

For identification for medical devices, the medical device is formed by a generic electronics module and a removable identification module. By using an identifier on a removable module, the identifier may be associated with different electronics modules to form the medical device at different times. The removable module may include electronic paper, label, and/or memory for storing and/or displaying information about the medical device. The removable module may allow for settings to be provided for any connected electronics module, avoiding reconfiguring by the user. A service organization does not need to re-ship back repaired components, instead providing a replacement electronics module to form the complete medical device with the user kept identification module.

A framework for characterizing contrast enhanced ultrasound (CEUS) images. The framework derives (204) a brightness mode (B-mode) and contrast image sequence from the sequence of contrast enhanced ultrasound (CEUS) images. B-mode images and contrast images in the B-mode and contrast image sequence are spatially co-registered and temporally sub-sampled. A region of interest may be selected (206) in a frame of the B-mode and contrast image sequence. The region of interest is then characterized (208) based on the B-mode and contrast image sequence.

Improved imaging devices and methods. A portable SPECT imaging device may co-register with imaging modalities such as ultrasound. Gamma camera panels including gamma camera sensors may be connected to a mechanical arm. A coded aperture mask may be placed in front of a gamma-ray photon sensor and used to construct a high-resolution three-dimensional map of radioisotope distributions inside a patient, which can be generated by scanning the patient from a reduced range of directions around the patient and with radiation sensors placed in close proximity to this patient. Increased imaging sensitivity and resolution is provided. The SPECT imaging device can be used to guide medical interventions, such as biopsies and ablation therapies, and can also be used to guide surgeries.

Improved imaging devices and methods. A portable SPECT imaging device may co-register with imaging modalities such as ultrasound. Gamma camera panels including gamma camera sensors may be connected to a mechanical arm. A coded aperture mask may be placed in front of a gamma-ray photon sensor and used to construct a high-resolution three-dimensional map of radioisotope distributions inside a patient, which can be generated by scanning the patient from a reduced range of directions around the patient and with radiation sensors placed in close proximity to this patient. Increased imaging sensitivity and resolution is provided. The SPECT imaging device can be used to guide medical interventions, such as biopsies and ablation therapies, and can also be used to guide surgeries.

Methods of visualizing performance of a diagnostic laboratory system are provided. The methods include displaying on a display, an image representing a layout of a plurality of laboratory analyzers included within the diagnostic laboratory system, and overlaying the image with a dynamically-changeable color overlay that indicates a performance for the plurality of laboratory analyzers over a period of time via using changeable colors. Systems including color-changeable overlays are provided as are other aspects.

The invention relates to a cryostat structure (30) for a magnetic resonance device (10) comprising: an outer vacuum chamber (42) enclosing a vacuum region (71); a thermal radiation shield (33) arranged within the outer vacuum chamber (42) and configured to encompass a magnet space (72); and a conduit (60) extending through a wall of the thermal radiation shield (33) and fluidly connecting the magnet space (72) and the vacuum region (71) outside the thermal radiation shield (33). The invention also relates to a magnetic resonance device (10) comprising an inventive cryostat structure (30).

A superconducting magnet, comprising multiple superconducting coils (10) and multiple connection units (20). The multiple superconducting coils (10) are used for forming a main magnetic field for magnetic resonance imaging. The multiple superconducting coils (10) are arranged in an axial direction (A) of the superconducting magnet. Each connection unit (20) is connected to two superconducting coils (10) that are adjacent, and at least one manner of connection to these two superconducting coils (10) is a detachable connection. The connection unit can be connected to a refrigerator (30) of the superconducting magnet, so that cold is transferred to the superconducting coil by means of the connection unit to help reduce maintenance costs of the superconducting magnet, and help reduce temperature differences during cooling of the superconducting magnet. In addition, a magnetic resonance imaging device is also provided.

Systems and methods for left atrial appendage closure device specification from two dimensional (2D) Intracardiac Echo imaging (ICE). In an imaging procedure, 2D ICE is used to acquire images of the left atrium (20) of a patient. A model (320) of the left atrium (20) is generated from the images of the left atrium (20). The model (320) of the left atrium (20) is used to validate subsequent imaging of the left atrial appendage (26) of the patient. Anatomical measurements from the validated subsequent imaging may be used to select or specify a left atrial appendage closure device in order to, for example, treat atrial fibrillation patients.

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Die Erfindung betrifft ein Computertomographiegerät (1), aufweisend eine Gantry (20) mit einer Öffnung (9) und eine Körperstützvorrichtung (75) zur Stützung eines Körpers (15) eines Menschen (13),wobei die Körperstützvorrichtung (75) ein Brett (7) aufweist und derart relativ zu der Öffnung (9) angeordnet ist, dass ein Schulterbereich des Körpers (15) des Menschen (13) auf dem Brett (7) aufliegt, wenn sich das Brett (7) in einer Untersuchungsposition des Bretts (7) relativ zu der Gantry (20) befindet und ein Kopf (14) des Menschen (13) entlang einer Systemachse (SA) der Gantry (20) in die Öffnung (9) eingeführt ist,dadurch gekennzeichnet, dass die Körperstützvorrichtung (75) eine Schwenkvorrichtung (70) aufweist und das Brett (7) mittels der Schwenkvorrichtung (70) derart relativ zu der Gantry (20) um eine Schwenkachse (7A) schwenkbar gelagert ist, dass durch eine erste Schwenkbewegung des Bretts (7) um die Schwenkachse (7A) das Brett (7) relativ zu der Gantry (20) von einer Vorbereitungsposition des Bretts (7) bis zu der Untersuchungsposition des Bretts (7) bewegt werden kann.

Die Erfindung betrifft ein Detektormodul (1) für einen Röntgendetektor umfassend in einem Stapelaufbau (5) eine Sensorschicht (11), eine Ausleseschicht (17), eine Heizschicht (2), sowie eine der Heizschicht (2) im Stapelaufbau nachgelagerte Verdrahtungseinheit (19), wobei die Heizschicht (2) in eine Mehrzahl an Teilheizbereiche (101,102, ..., 116) unterteilt ist, welche jeweils zumindest ein Heizelement (27) aufweisen und jeweils einzeln für eine Versorgung mit Leistung kontaktierbar sind, und wobei mittels der nachgeordneten Verdrahtungseinheit (19) die Teilheizbereiche (101,102,...,116) der Heizschicht (2) jeweils kontaktiert und zumindest eine Teilzahl der Teilheizbereiche (101,102,...,116) für die Versorgung mit Leistung miteinander verschaltet sind.

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Verfahren zur Anpassung eines Bildeindrucks eines Bildes (7), insbesondere eines im Rahmen einer medizinischen Bildgebung ermittelten Bildes (7), umfassend die Schritte: - Bereitstellen eines Bildes (7) oder von Eingangsdaten, aus denen das Bild (7) ermittelt wird, - Vorgabe einer jeweiligen Sollbildeindrucksklasse (9) für das Bild (7) und/oder für wenigstens ein direkt oder durch Vorgabe wenigstens eines Segmenttyps vorgegebenes Bildsegment (16, 17) des Bildes (7), wobei ein Zusammenhang zwischen den Bilddaten des Bildes (7) und/oder des jeweiligen Bildsegments (16, 17) und einer zugeordneten Bildeindrucksklasse (14) durch einen Klassifikationsalgorithmus (13) vorgegeben ist, - Verändern des Bildes (7) oder der Eingangsdaten durch einen Modifikationsalgorithmus (8), um die den hieraus resultierenden, veränderten Bilddaten (12, 18, 19) des Bildes (7) oder des jeweiligen Bildsegments (16, 17) zugeordnete Bildeindrucksklasse (14) der jeweiligen Sollbildeindrucksklasse (9) anzugleichen, wobei wenigstens ein Modifikationsparameter des Modifikationsalgorithmus (8) in Abhängigkeit des Klassifikationsalgorithmus (13) vorgegeben ist oder wird.

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The invention relates to a computer-implemented method for classifying a malignancy risk of a kidney, in particular a human kidney. The method comprises the steps of providing imaging data of an anatomy of a subject patient, wherein the imaging data comprises at least partially a representation of a kidney of the subject patient, using a first neural network to segment at least one region of the kidney representation which is based on the imaging data, using a second neural network to detect one or more suspected lesions of the segmented kidney representation and classifying the detected suspected lesion with a malignancy risk using a third neural network, wherein the third neural network is a deep profiler.

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