50results about "Magnetic variable regulation" patented technology

A safety system for policing a doorway comprising a door to an MRI room.

This disclosure provides a system for preparing a patient for examination in a medical magnetic resonance imaging (MRI) environment. The system includes: a magnetic resonance imaging unit (20) applied to the MRI environment and including at least one magnetic coil controlled to provide magnetic stimulation to intentionally stimulate nerves and / or muscles of a peripheral body part of the patient during the examination phase; and a first device (10) applied during a patient preparation phase prior to the examination phase; wherein the MRI unit (20) and the first device (10) are configured to provide tactile communication with the patient by intentionally stimulating nerves and / or muscles of a peripheral body part of the patient, wherein the first device (10) includes: at least one stimulation unit (11) adapted to act as a proxy for the MRI unit (20) by simulating subsequent magnetic stimulation from the MRI unit (20) as proxy electrical stimulation and / or proxy magnetic stimulation, and to operate separately from the magnetic stimulation from the MRI unit, and by applying stimulation by a means different from the magnetic stimulation from the MRI unit. The system includes an electrical stimulation and / or magnetic stimulation to intentionally stimulate nerves and / or muscles in the peripheral body parts of the patient; and at least one data processing unit (12) adapted to control the at least one stimulation unit (11) to apply the electrical stimulation and / or the magnetic stimulation, wherein at least one patient stimulation threshold is assigned to the proxy electrical stimulation and / or the proxy magnetic stimulation, and the at least one data processing unit (12) is also adapted to correlate the at least one patient stimulation threshold associated with the proxy electrical stimulation and / or the proxy magnetic stimulation with a corresponding threshold assigned to the magnetic stimulation used in the medical magnetic resonance imaging environment, and to provide control parameters for applying the subsequent magnetic stimulation by the magnetic resonance imaging unit (20) based on the correlation; wherein the at least one data processing unit (12) is also adapted to provide tactile interaction information data and / or tactile interaction instruction data associated with the proxy intentional stimulation via a user interface to train the patient for tactile communication during a subsequent examination phase.

Disclosed is a magnetic resonance imaging, MRI, phantom (100, 200, 300, 400, 500, 700), the magnetic resonance imaging phantom (100, 200, 300, 400, 500, 700) comprising: at least one phantom portion (102, 104, 106, 108, 110, 112, 604); and at least one phantom-portion specific switchable shielding portion (114, 116, 118, 120, 122, 124, 606), wherein the at least one switchable shielding portion is configured to be switchable between a blocking, resonant state and a transparent, non-resonant state respective to an MRI frequency range.

Provided are a medical imaging apparatus, a medical imaging support method, and a program that can notify a user of a plurality of notifications from a subject. A medical imaging apparatus according to the present disclosure captures a medical image of a subject, identifies a first motion performed by the subject inserted into a bore of a gantry based on information acquired by a motion sensor, compares the identified first motion with a plurality of second motions registered in a memory, and notifies the user of notification content corresponding to the second motion that matches the identified first motion among the plurality of second motions registered in the memory.

Described herein is a method for transferring a two-spin order of a molecule (e.g. parahydrogen) into a hyperpolarization of at least one heteronucleus, the method comprising the steps of: providing a molecule (e.g. parahydrogen pH2) comprising two protons and at least one heteronucleus (S3, S4), the protons having nuclear spins being coupled to a nuclear spin of the at least one heteronucleus; exposing the protons and the at least one heteronucleus to an e.g. homogeneous magnetic field (B0) in a z-direction, the z-direction forming a right-handed orthogonal coordinate system with an x- and a y-direction; and applying a sequence of radio frequency pulses to the protons and the at least one heteronucleus in order to transfer said two-spin order into the hyperpolarization of the at least one heteronucleus, wherein said sequence of radio frequency pulses comprises a first, a second, and a third group (NA, NB, NC) of 180° radio frequency pulses, wherein the first group (NA) of 180° radio frequency pulses is consecutively applied nA times during a first time interval (τA) and wherein the second group (NB) of 180° radio frequency pulses is consecutively applied nB times during a second time interval (τB) after the last first group, and wherein the third group (NC) of 180° radio frequency pulses is consecutively applied nC times during a third time interval (τC) after the last second group, wherein nA, nB, nC are integer numbers, respectively.

A sea-land-air intermodal transportation apparatus for a magnetic resonance imaging apparatus is described. The apparatus includes a primary container body, a secondary container body, a power supply system, a temperature controlling system, and a monitoring system. The primary container body is mounted with the temperature controlling system, the monitoring system and a slide rail device for fixing in place the magnetic resonance imaging apparatus. The secondary container body is mounted with the power supply system, and the primary container body and the secondary container body can be fixedly mounted on the same hoisting frame. On shore, the primary container body is powered by the power supply system of the secondary container body. On board a ship or in a plane, the apparatus(es) of the primary container body is / are connected to a mains power supply interface or directly to a shipboard power supply.

The application relates to a magnetic resonance scanning protocol determination method and a magnetic resonance imaging method. In response to a user input operation instruction, a task type corresponding to the operation instruction is obtained, when the task type is identified as an image scanning task in a medical task, an initial scanning protocol corresponding to the image scanning task is acquired, and a target scanning protocol for a scanning object is determined according to the initial scanning protocol; the task type includes a medical task and a non-medical task. In the embodiment of the application, when the task type of the operation instruction is an image scanning task, the corresponding initial scanning protocol is acquired, and the target scanning protocol for the scanning object is determined based on the initial scanning protocol, so that the user does not need to manually select a specific scanning protocol in a protocol package according to a scanning part described on a paper scanning sheet or an electronic scanning sheet, problems caused by incorrect manual selection of the scanning protocol can be greatly reduced, and the efficiency and accuracy of magnetic resonance scanning protocol determination are improved.

The invention relates to an inversion chamber (2), comprising at least one magnetization means located at least partially inside a magnetic screen (5), referred to as the at least one internal magnetization means (11, 12), and at least partially surrounding an inversion portion (33), which means is arranged to create an inversion magnetic field (6), the main component of which is along a Z direction and inverts as it travels through the inside of the inversion portion (33) so as to transfer, within the inversion portion (33), the hyperpolarisation from a first type of nuclear spins to a second type of nuclear spins (with scalar coupling between the nuclear spins) during a solution flow with non-zero velocity in the inversion portion (33) from the chamber inlet to the chamber outlet. The invention also relates to a device comprising this chamber and a method implemented by such a device.

The application relates to the technical field of magnetic resonance equipment, in particular to a magnetic resonance scanning device and a positioning method. The magnetic resonance scanning device comprises a magnetic resonance scanning main body, a numerical control box for controlling the operation of the magnetic resonance scanning main body is arranged on one side of the magnetic resonance scanning main body, and a docking plate is arranged on the front side of the magnetic resonance scanning main body; a bearing workbench is inserted and arranged on the docking plate, a sliding cavity is arranged in the middle of the bearing workbench, and grooves are arranged on the two sides of the sliding cavity of the bearing workbench; a bed plate assembly is slidably arranged in the sliding cavity, and a first driving piece for driving the bed plate assembly to move along the sliding cavity is arranged in the sliding cavity; a gantry is movably arranged on the bearing workbench and is in sliding fit with the grooves on the two sides, and a second driving piece for driving the gantry to move is arranged in the grooves; and a positioning detection mechanism is arranged on the gantry. The magnetic resonance scanning device and the positioning method provided by the application have the advantages of metal detection, accurate positioning and scanning, and convenient detection.

A magnetic resonance imaging examination of an anatomic region of a subject is performed with a magnetic resonance imaging system. A fast metal detection sequence configured to detect the presence of a metal object within or at the subject is performed. A control unit determines whether a metal object is detected, wherein the control unit initiates a standard examination workflow if no metal object is detected during the fast metal detection sequence, and wherein the control unit initiates a modified examination workflow that is different from the standard examination workflow if a metal object is detected during the fast metal detection sequence.

Methods and systems are provided for an automatic lens cleaning system incorporated into a system. The system includes an imaging device, a reversibly coupled table configured to reversibly couple to the imaging device, a communication interface including a first lens of the imaging device and a second lens of the reversibly coupled table, and the automatic lens cleaning system. The automatic lens cleaning system includes a bellow positioned at a coupling interface between the imaging device and the reversibly coupled table, and at least one nozzle fluidly coupled to the bellow and configured to direct a flow of gas towards at least one of the first lens or the second lens.

The invention relates to a holder for holding a magnetic resonance local coil, a system comprising a holder and a magnetic resonance local coil, a magnetic resonance device, and a method for performing a magnetic resonance measurement. The holder defines a storage volume suitable for holding a body part, for example, a patient's head. The holder comprises several elements that are movable relative to one another, with at least one of the elements being designed to receive the magnetic resonance local coil, in particular for arranging and / or securing the magnetic resonance local coil.

The invention relates to a magnetic resonance local coil and a magnetic resonance device comprising a magnetic resonance local coil. The magnetic resonance local coil is flexible and has a top and a bottom surface, the top and bottom surfaces each comprising a main surface of the magnetic resonance local coil. The magnetic resonance local coil exhibits a mass distribution characterized in that at least one outer region, in particular a peripheral region, of the main surfaces has a higher mass concentration than a central region of the main surfaces.

Systems and methods are disclosed in which a parallel kinematic robotic manipulator facilitates alignment of an insertable medical instrument according to an intraprocedurally-defined trajectory that is based on the identification, within volumetric image data, of a target location or region associated with a diagnostic procedure or therapeutic intervention. In some example implementations, a patient support is employed to provide access to an anatomical region, such as a pelvic region, and facilitate the placement of the parallel kinematic robotic manipulator in close proximity to the anatomical region, providing a compact configuration that enables intraprocedural imaging for target localization and registration of the frame of reference of the volumetric images with a frame of reference of the parallel kinematic robotic manipulator. In some example embodiments, the robotic system employs includes slider-based prismatically- driven parallel kinematic robotic manipulator, having a set of rails angled inwardly, with at least two carriages per rail.

The present invention relates to a high-frequency shielding device for a dedicated magnetic resonance imaging (MRI) device (10), in particular for a dedicated MRI head scanner (10), comprising: modular high-frequency shielding elements (72) configured to be interconnected and, in the interconnected state, to form a space for arranging the dedicated MRI device (10); and / or at least one high-frequency shield (140) configured to be arranged on one side on a patient (15) and / or on a movable patient seat (31) and on another side on the dedicated MRI device (10); and / or at least one high-frequency antenna (200) configured to cancel out a high-frequency signal from the dedicated MRI device (10) by destructive interference.

This invention relates to a satellite magnetic stability control method for on-orbit operating mode switching, belonging to the field of satellite magnetic stability control; it includes the following steps: Step 1, magnetic design of individual equipment; Step 2, measurement of magnetic moment change of individual equipment using the method of measuring the magnetic moment after demagnetization under zero magnetic field; Step 3, magnetic testing and magnetic compensation calibration of each individual equipment under each satellite operating mode; by reducing the magnetic moment change of individual equipment during satellite operating mode switching, the magnetic stability of the entire satellite is ensured during operating mode switching, so that the magnetic moment change of the entire satellite is minimized, thereby reducing the impact of satellite operating mode switching on in-situ magnetic field measurement tasks; this invention has the advantages of good control effect and high control accuracy for satellite magnetic control.

The invention relates to a method for operating an MR device with an MR magnet coil system, having the following steps: measuring a current temperature T of the magnet ist and comparing T ist with a first temperature setpoint T1 soll and, from the first temperature setpoint, carrying out a pumpdown of the vacuum vessel; if T ist > T1 soll , activating a vacuum pump and opening a first shut-off valve in a vacuum line of the vacuum pump to the vacuum vessel; measuring a current pressure P in the vacuum vessel ist and comparing P ist with a first pressure setpoint P1 soll at which the magnet coil system should be cooled to a cryogenic temperature; if P ist < P1 soll , activating a cooling head in order to cool a cooling arm; measuring a current temperature T on the magnet coil system ist and comparing T ist with T1 soll ; if T ist < T1 soll , switching off the first shut-off valve and the vacuum pump; measuring a current temperature T on the magnet ist and comparing T ist with a second temperature setpoint T2 soll and maintaining T2 soll , at which a run temperature of the magnet coil system for MR measurements is reached. The magnet coil system can thus be cooled autonomously.

An implantable array suitable for being placed in anatomic tissue of a human or animal body, comprising a substrate, and a reference structure, the reference structure being formed by a number of notches arranged in at least one outer edge of the substrate, the reference structure defining a spatial relationship with predefined points of the array.

The present invention provides a cooling system (1) for an in-bore equipment of a medical apparatus, comprising: a compact fan (11) which is resistant to magnetic interference, wherein the compact fan is configured to generate air flow through operation at high-frequency electromagnetic fields, a radio frequency, RF, shield (12) comprising a RF shielding housing (111) which completely encloses the compact fan (11), wherein the housing (111) comprises an air-in duct (112) and an air-out duct (113), and RF shielding mesh parts (121, 122) covering the air-in duct (112) and the air-out duct (113). In this way, a solution for efficient and localized cooling inside the bore of the medical apparatus is provided, to enhance the performance, the efficiency of medical apparatus and to improve the patient comfort.

The device for singulating shim elements comprises a cassette for receiving and / or storing a plurality of shim elements. The shim elements are arranged in the cassette in the form of a stack, in particular horizontally aligned and vertically stacked one above the other. The device includes a separating device for singulating a shim element. The separating device is configured to singulate a shim element from the plurality of shim elements by means of a horizontal lateral movement from the cassette. Furthermore, a method for singulating shim elements is proposed.