40results about "Material analysis by using resonance" patented technology

The present disclosure provides a solid-state quantum sensor module comprising: a substrate including a first main surface and a second main surface located on an opposite side to the first main surface; a solid-state element, including a color center, located on a first main surface side of the substrate; a light guide plate located between the substrate and the solid-state element; a microwave field-transmitting antenna; a light source located on the first main surface side of the substrate and emits light including a first wavelength that excites the color center from a ground state to an excited state; and a light detector located on the first main surface side of the substrate and detects photoluminescence including a second wavelength emitted from the solid-state element, wherein, when viewed along a normal direction of the first main surface of the substrate, the solid-state element overlaps with the microwave field-transmitting antenna; and when viewed along the normal direction of the first main surface of the substrate, the light detector does not overlap with the microwave field-transmitting antenna.

To improve the accuracy of measuring pressure inside a helium container. [Solution] A magnetic resonance imaging apparatus according to one embodiment comprises a superconducting coil, a helium container, a first pressure gauge, a second pressure gauge, a valve, and a control circuit. The superconducting coil generates a static magnetic field. The helium container houses liquid helium for cooling the superconducting coil together with the superconducting coil. The first pressure gauge measures the pressure inside the helium container within a first pressure measurement range. The second pressure gauge measures the pressure inside the helium container within a second pressure measurement range that is narrower than the first pressure measurement range. The valve switches the second pressure gauge to be used for measuring the pressure inside the helium container. The control circuit controls the opening and closing of the valve based on the measurement value of the first pressure gauge.

For autonomous MR scanning of a given medical test, a simplified MR scanner can be used without or with little input or control by a technical expert, e.g., by a physician, radiologist, or person trained in MR scanner operation. The MR scanner autonomously positions, scans, checks quality, analyzes, and / or outputs answers to diagnostic questions with or without MR images. Artificial intelligence-based scan analysis allows continuous or instant changes to the scan configuration to acquire the data desired to answer the diagnostic question. By using a simplified MR scanner, both the positioning of the patient relative to the MR scanner and the localization of the scan by the MR scanner are jointly solved. Sensors can sense the patient at the scan position, with reduced radio frequency requirements allowing a more open bore.

In a method for improving the recording of measurement data of an object under inspection, the method includes loading desired imaging parameters and a desired flip angle for recording the measurement data by means of a recording method, wherein the gradient to be switched for position encoding of the measurement data has its full intensity during the incident RF excitation pulse. A quantization value of a desired interference for the recording method is determined based on the desired imaging parameters, and a check on the feasibility of correcting for the interference is performed based on the quantization value and the desired flip angle.

Methods and systems herein may perform nuclear magnetic resonance measurements, and nuclear magnetic resonance tools, the method and systems comprising: acquiring, using an NMR sensor a first NMR signal from a volume in a subterranean region, wherein the first NMR signal is acquired using a first acquisition window. Further, acquiring, using the NMR sensor a second NMR signal from a volume in the subterranean region, wherein the second NMR signal is acquired using a second acquisition window different from the first acquisition window, wherein the first NMR signal and the second NMR signal form an NMR relaxation data; determining, using the first NMR signal and the second NMR signal, a correction term. Finally, the correction term may be used to acquire a corrected relaxation data set.

The present invention relates to a method of manufacturing a liquid cosmetic impregnation foam and the foam, the method including a test method for the liquid cosmetic impregnation foam. The test method for the liquid cosmetic impregnation foam according to one embodiment of the present invention can include the steps of: manufacturing a liquid cosmetic impregnation foam capable of being used to impregnate a liquid or solid cosmetic composition; performing an FT-IR test on the manufactured liquid cosmetic impregnation foam; determining whether a result value of the FT-IR test is within a specific ratio range that provides a balance of hydrolysis resistance, water resistance, and oil resistance of the liquid cosmetic impregnation foam; and if the result value of the FT-IR test is within the specific ratio range, performing a solid NMR test.

The invention relates to a magnetic resonance local coil and a magnetic resonance apparatus. The magnetic resonance local coil comprises at least one antenna for transmitting and / or receiving high-frequency signals and at least one bistable spring. Herein, the magnetic resonance local coil is designed such that the bistable spring has a curved shape in a first state and a flat shape in a second state.

A magnetic sensor (10) includes a diamond substrate (11) and a waveguide body (14) in contact with the diamond substrate (11). The diamond substrate (11) includes, on a surface (11a) not in contact with the waveguide body (14), a first layer (11La) including a diamond crystal on which an NV center (12) is disposed and, on a surface (11b) in contact with the waveguide body (14), a second layer (11Lb) on which a conductive pattern (13) is disposed. The waveguide body (14) includes a line (15) configured to transmit a microwave that generates electron spin resonance to the conductive pattern (13) and an optical waveguide (16) configured to transmit exciting light and fluorescence, the exciting light irradiating the diamond substrate (11) and emitting the fluorescence in the first layer (11La) of the diamond substrate (11).

The present invention 13 An efficient measurement method for C-MRI, and a method used in said measurement method. 13 The objective is to provide a C-MRI contrast agent and a method for producing the contrast agent. [Solution] The present invention provides to the end 13 The dendrimer structure D has a functional group X containing C, and the group X is capable of forming a conjugate with a polypeptide. 1 A compound having this property is reacted with a polypeptide. 13 By preparing a polypeptide into which a functional group X containing C has been introduced. 13 A method for producing a C-MRI contrast agent, and a method that can be prepared by said method. 13 C-MRI contrast agent will be provided.

The invention relates to a magnetic resonance coil structure, a magnetic resonance system and a scanning control method thereof. The magnetic resonance coil structure integrates the first group of coil units and the second group of coil units, the detection of hydrogen nuclides can be independently realized through the second group of coil units, and the detection of various multi-nuclear nuclides including xenon nuclides, sodium nuclides, carbon nuclides or phosphorus nuclides and other multi-nuclear nuclides can be realized through the first group of coil units. Therefore, the magnetic resonance coil structure can realize the acquisition of mononuclear nuclide and various multi-nuclear nuclide signals. During scanning, the coil units with the corresponding resonance frequencies can be selected according to corresponding use requirements, so that the coil units can receive magnetic resonance signals of corresponding nuclides, acquisition of various nuclide signals is realized, magnetic resonance images with higher quality and more complete information can be obtained, repeated assembly and disassembly of coils are not needed, and the cost is reduced. The complexity of detection operation is reduced, and the use is more convenient.

A method of estimating a wettability characteristic of a rock material includes acquiring a plurality of T2 distributions based on nuclear magnetic resonance (NMR) measurements of a rock material unde

A method for producing a powder witness sampling tube includes simultaneously additive manufacturing a container with a primary part, filling at least a portion of the container with feedstock for the part simultaneously with additive manufacturing of the primary part, and sealing the container during additive manufacturing of the primary part. An in-situ feedstock powder witness sampling tube includes a container additive manufactured simultaneously with a primary part and a plurality of individual chambers within the container, at least one of the chambers being capable of being removed intact from the container. Additionally, a method for enhancing inspection of feedstock in an additive manufactured part includes simultaneously additive manufacturing a container with a primary part, capturing feedstock, density, and environment in the container, and sealing the container.

The present disclosure discloses a radio frequency antenna, a magnetic resonance imaging system, and a scan control method thereof. The radio frequency antenna for the magnetic resonance imaging system comprises: a first coil assembly including a first device for transmitting radio frequency excitation signals and a second device for receiving magnetic resonance relaxation signals of first nuclei; and a second coil assembly including a third device for receiving magnetic resonance relaxation signals of second nuclei different from the first nuclei; the first coil assembly and the second coil assembly being disposed on a support structure.

A birdcage-type or birdcage-derived resonator 1 for use in irradiation and detection in NMR experiments comprises two conductive circular rings 2 at their axial ends, joined and fastened with a plurality of mutually isolated parallel conductive rods 3 distributed over the circumference of the rings 2, the axial outer faces 16 of the rings 2 being axially spaced apart to a birdcage height BCh, at least one capacitor being provided between each of the rods 3 and each of the rings 2, or at least one capacitor being provided in each of the rings 2 between adjacent conductive rods 3 in each of the ring segments. The resonator takes the form of an axial capacitor bar 19, the capacitors extending beyond their outer faces 16 between the rings 2 and forming protruding portions 24 on both axial sides, the length SPl of the protruding portions 24 on each side being at least 25% of the birdcage height BCh.

The invention relates to a method for determining a resonance frequency (4) of a quantum system (6) in a frequency range (8), wherein in a first method step (34) the frequency range (8) is divided into a number of frequency bins (36, 36a... 36h), wherein in a second method step (42) for each frequency bin (36, 36a...36h): a measurement frequency (14) is generated, the measurement frequency (14) is expanded by signal processing to a frequency group (18) covering the frequency bin (36, 36a...36h), the quantum system (6) of the frequency group (18) is manipulated, and a resulting measurement signal (26) is acquired, and the measurement signal (26) is compared with a stored threshold value, wherein in a third method step (52) a resonance frequency (4) is determined on the basis of those measurement signals (26) which have reached or exceeded the threshold value.

The present disclosure describes methods and systems for determining source rock potential in a subterranean region of a hydrocarbon reservoir. One method includes receiving, an electron spin resonance (ESR) image from an in-situ ESR scanner that is attached to a wellbore at a first subterranean location, wherein the wellbore extends into the subterranean region of the hydrocarbon reservoir; determining, a spin concentration level of a source rock in the first subterranean location based on the ESR image; and determining, the source rock potential at the first subterranean location based on the determined spin concentration level.

To reduce the quench risk of superconducting magnets. [Solution] The superconducting magnet according to this embodiment includes a bobbin for holding a superconducting coil, and a heat conductive material extending from a first portion of the outer circumferential surface of the bobbin, corresponding to the portion of the bobbin where the superconducting coil is located, to a second portion of the outer circumferential surface of the bobbin, corresponding to the portion of the bobbin where the superconducting coil is not located.

To provide a MRI device equipped with a magnetic shield structure for suppressing a leakage magnetic flux.SOLUTION: A magnetic resonance imaging device includes a laminate 301 for blocking a magnetic flux generated from a first coil 204 for a disk-like magnetic material magnetic pole 201. The laminate includes a central part sandwiched between the first coil and the disk-like magnetic material magnetic pole and an end part opposed to an annular magnetic material magnetic pole 202 through air. A thickness in a Z-axis direction of the end part of the laminate is larger than a thickness in the Z-axis direction of the central part of the laminate. A position along the Z-axis direction of a surface on an imaging space side of the end part of the laminate is positioned closer to the first coil than a position along the Z-axis direction of a surface on an imaging space side of the central part of the laminate.SELECTED DRAWING: Figure 7

In a general embodiment, the primary magnetic field is tuned in a magnetic resonance system. In some embodiments, the magnetic resonance system includes a primary magnet configured to generate a primary magnetic field, a resonator defining a sample region in the primary magnetic field, and a support assembly supporting the primary magnet. The support assembly includes a plurality of actuators configured to tune the sample region in the primary magnetic field by moving the primary magnet relative to the resonator. The plurality of actuators are configured to tune the sample region in at least five spatial degrees of freedom (e.g., position, orientation, or both).

This application discloses a task-oriented fMRI encoding method, system, device, medium, and product under natural stimulus conditions, relating to the field of fMRI encoding. The method includes: acquiring task-oriented fMRI data collected under natural stimulus conditions; constructing an fMRI data matrix; constructing a feature subspace; and constructing a banded ridge regression encoding model. Based on the overall regularization parameter candidate set, the optimal hyperparameters of the banded ridge regression encoding model are determined. A priori voxel spatiotemporal homogeneity under natural stimulus conditions is introduced, and the temporal series correlation coefficient between each voxel and its neighboring voxels is calculated to determine the global regularization parameter after spatiotemporal constraints, and the subspace banded ridge regularization parameter is determined. The subspace banded ridge regularization parameter is substituted into and the banded ridge regression encoding model is solved to determine the regression weights of each feature subspace, thereby realizing task-oriented fMRI encoding for brain region activity analysis. This application alleviates the hyperparameter fluctuation problem in the natural stimulus encoding process.

After an unnecessary band component is removed from an intermediate frequency (IF) demodulated signal obtained through IF demodulation of an observation signal of nuclear magnetic resonance, a digitization device (21) generates a magnetic field or the like corresponding to the IF demodulated signal, generates light corresponding to the magnetic field or the like by using a sensing member in an optical quantum sensor unit, converts the light to a sensor signal by using a photoelectric element, and digitizes the sensor signal by using an A / D converter to generate a digital IF demodulated signal. The optical quantum sensor unit has unstable output intensity characteristics in a prescribed frequency range. A correction processing unit (22b) corrects the IF demodulated signal in accordance with the frequency of the magnetic field or the like so that the frequency characteristics of the IF demodulated signal in the aforementioned frequency range are brought close to a constant value.

To allow a mechanism for imparting an external stimulus to be installed so as to enable high-sensitivity measurement of structural and electromagnetic changes of a cell in response to the external stimulus using an NV center.SOLUTION: A sample measurement device provided herein has an environmental control mechanism for changing the state of a sample by imparting an external stimulus to the sample.SELECTED DRAWING: Figure 3

This diamond spin sensor system includes: a sensor part that includes diamond having a color center with an electron spin; a control power supply part that generates excitation light for irradiating t

In a general embodiment, a sample is packed into a magnetic resonance system. In some embodiments, the magnetic resonance system includes a primary magnet that generates a primary magnetic field and a resonator that defines a sample region within the primary magnetic field. A sample transfer arm includes a first end configured to be coupled to a sample holder. A centering device is positioned around the sample transfer arm. A sheet defines an opening. An actuator system moves the centering device to engage with the sheet. By engaging the centering device with the sheet, the sample holder aligns with the opening. The sample transfer arm is moved to transfer the sample holder from the sample packing region through the opening toward the sample region.

A portable assembly for an MRI imaging system has independently adjustable modules of a scanner bore having electromagnets positioned along its inner wall, each electromagnet including a coil assembly. An independent power supply, controlled by a controller, connected to each of the electromagnets includes piezoelectric material and generates pulses of electric current (at a specified frequency and for a specified duration) and an electromagnetic field. Detectors positioned along the inner wall are configured to detect a reflected signal while the tissue of the subject is under an influence of the electromagnetic field, and to transmit the reflected signal for a remote computer system to generate an image, an analysis and / or a diagnosis. Cooling water inside coils may include nanoparticles, be hydrogenated and / or induce a water vortex. The electromagnets may be superconductive at a relatively high temperature and may utilize AI-calibrated frequencies. Images generated may be 3-dimensional and converted to 2-dimensional.