Abstract: A method (100), a device (400), and a system for detecting the sweetness of fruit, and a storage medium. The method (100) comprises: using magnetic resonance diffusion weighted imaging to acquire an apparent diffusion coefficient (ADC) of fruit to be detected when same is undamaged (S110); determining an effective ADC of said fruit according to the ADC of said fruit (S120); and determining the sweetness of said fruit according to the effective ADC (S130). The ADC of fruit to be detected may be acquired on the basis of magnetic resonance imaging when said fruit is undamaged, and the ADC is used to determine the sweetness of the fruit, thus achieving non-destructive and reliable fruit sweetness detection.

Abstract: In Multiplex MRI image reconstruction, a hardware processor acquires sub-sampled Multiplex MRI data and reconstructs parametric images from the sub-sampled Multiplex MRI data. A machine learning model or deep learning model uses the subsampled Multiplex MRI data as the input and parametric maps calculated from the fully sampled data, or reconstructed fully sample data, as the ground truth. The model learns to reconstruct the parametric maps directly from the subsampled Multiplex MRI data.

Abstract: A magnetic resonance (MR) imaging acceleration method is provided. The method includes applying, by an MR system, a pulse sequence having a k-space trajectory of a plurality of blades being rotated in k-space, each blade including a plurality of views, wherein the k-space trajectory has an undersampling pattern in the k-space. The method also includes receiving k-space data of a subject acquired by the pulse sequence, reconstructing MR images of the subject based on the k-space data using compressed sensing, and outputting the reconstructed images.

Abstract: A medical system including a memory storing machine executable instructions is disclosed. The medical system also includes a computational system. The execution of the machine executable instructions causes the computational system to receive k-space data descriptive of a region of interest of a subject. The k-space data are acquired using a magnetic resonance fingerprinting pulse sequence configured for encoding chemical shifts. The execution of the machine executable instructions also causes the computational system to receive fat peak weights descriptive of a magnetic resonance fat spectrum. The fat peak weights are matched to a pulse train of the magnetic resonance fingerprinting pulse sequence. The execution of the machine executable instructions also causes the computational system to reconstruct a quantitative magnetic resonance image from the k-space data and the fat peak weights.

Abstract: Some embodiments of the present disclosure disclose systems and methods for robust magnetic resonance image reconstruction that can model for all or nearly all components in the magnetic resonance imaging system, that possess compressibility features to speed up reconstructions, and that can be optimized such that the reconstruction can be performed within a short period of time.

Abstract: A method of using the relaxation rate (R1 and/or R2) of solvent NMR signal to noninvasively assess whether viral capsids in a capsid preparation are full or empty, and the percentage of full capsids if the vial contains a mixture of full and empty capsids. The method can simply, rapidly, and non-invasively prove the safety and potency of the capsid preparation and thus whether the capsid preparation can be approved for clinical use, without requiring any sample preparation or reagent addition.

Abstract: An image forming apparatus including a main body casing, a drum cartridge and a developing cartridge. The main body casing has an opening and a slot extending in from the opening toward an inside of the main body casing along a first direction. The drum cartridge and the developing cartridge are arranged in a second direction intersecting the first direction in a state where the drum cartridge and the developing cartridge are attached to the slot. The main body casing includes a drum guide groove configured to guide movement of the drum cartridge. The drum cartridge includes a drum protrusion configured to be engaged with the drum guide groove. A width of the drum guide groove in the second direction is decreased toward the inside of the main body casing from the opening.

Abstract: A magnetic resonance imaging, MRI, system (2), comprises MRI electronics, including a transmitting coil (11) for transmitting radio frequency, RF, signals and a receiving coil (12) for receiving RF signals; and/or a transmitting/receiving coil (3) for transmitting and receiving RF signals; and cables (22), connecting the transmitting coil (11), receiving coil (12) and/or transmitting/receiving coil (3) to other electronic elements.

Abstract: A training method for training neural networks to determine a magnetic susceptibility distribution of a sample may include: storing a simulated magnetic susceptibility map of the sample, generating a modified magnetic susceptibility map by combining an influence of one or more external magnetic susceptibility sources with the simulated magnetic susceptibility map and storing the modified magnetic susceptibility maps. The method may include generating a first training image by applying a quantitative susceptibility mapping model the modified magnetic susceptibility map and storing the first training image, applying the first neural network to the first image and a second neural network to an output of the first neural network and changing network parameters of the first and the second neural network depending on a deviation of an output of the second artificial neural network from the simulated magnetic susceptibility map.

Abstract: A magnetic resonance member 1 includes a crystal structure and is capable of electron spin quantum operations with microwaves of different frequencies corresponding to arrangement orientations of a vacancy and an impurity in a crystal lattice. A magnetic field transmission unit 4 senses a measurement target magnetic field at plural measurement positions different from each other, and applies application magnetic fields corresponding to the measurement target magnetic field sensed at the plural measurement positions to the magnetic resonance member 1 along respective different directions corresponding to the aforementioned arrangement orientations. A measurement control unit 21 controls a high frequency power supply 12, and determines detection values detected by a detecting device (an irradiating device 5 and a light receiving device 6) of the physical phenomena corresponding to the plural measurement positions.

Abstract: A method for magnetic resonance imaging (MRI) comprises applying a consecutive series of MRI sequences to a target volume (V) according to experimental settings (TR, ?, ?). A discrete sequence of transient response signals (Sn, Sn+1, Sn+2) is measured and fitted to a fit function (F) that is continuously dependent on a sequence number (n) of the respective MRI sequence (Pn) and corresponding response signal (Sn). A shape of the fit function is determined according to an analytically modelled evolution by the experimental parameters (TR, ?, ?) as well as variable intrinsic parameters (r, ?3, ?, ?) to be fitted. For example, the model is based on an equivalent harmonic oscillator. The intrinsic parameters of the fit function can be related to the intrinsic properties (PD, T1, T2) of the spin systems and used for imaging the target volume (V). Various optimizations of contrast can be achieved by tuning the experimental settings according to the model.

Abstract: A motor control apparatus configured to control a motor, includes: a drive circuit of the motor including a semiconductor device and being installed on a different substrate from a substrate of the motor; a load switching unit configured to set a load of the motor in a first state as a first load, and set a load of the motor in a second state as a second load that is smaller than the first load; and a control unit configured to control the drive circuit and the load switching unit, wherein the control unit is configured to control the drive circuit to start rotation of the motor when the load switching unit is in the second state.

Abstract: This invention is useful for determining the permeability of a geological formation using 1H NMR diffusion measurements acquired in the laboratory and using downhole 1H NMR well logging. The current technology for obtaining formation permeability downhole using NMR is not adequate for low-permeability, unconventional source rock formations with high organic content. This new method uses laboratory 1H NMR diffusion measurements for creating continuous downhole well logs of the mobile-hydrocarbon permeability of the hydrocarbon-filled pore space of downhole geological formations.

Abstract: Disclosed is a method and apparatus for frequency drift correction of magnetic resonance CEST imaging, and a medium and an imaging device. The method comprises the following steps: firstly, in the frequency drift correction module, exciting a target slice by using a small flip-angle radio-frequency pulse, and acquiring a single line of free induction decay signals or two lines of non-phase encoding gradient echo signals; secondly, respectively calculating a value of the main magnetic field frequency drift according to phase information and an acquisition time of the single line of free induction decay signals or the two lines of non-phase encoding gradient echo signals; then adjusting the center frequency of the magnetic resonance device in real time according to the calculated value of the main magnetic field frequency drift, and achieving the real-time correction of main magnetic field frequency drift; and finally, performing CEST imaging.

Abstract: Methods and systems perform magnetic resonance fingerprinting (MRF) by obtaining scan data of a sample at a low-resolution over a k-space and obtaining other scan data at a high-resolution over the k-space. This scan data may be captured over the same regions, different regions, or where one scan data is captured over a sub-region of the other. The low-resolution and high-resolution scanning is repeated according to a scanning ratio between the first scan data and the second scan data to generate interleaved low-resolution and high-resolution scan data. From that interleaved low-resolution and high-resolution scan data, high-resolution tissue property maps of the sample are generated.

Abstract: Disclosed is a microwave photonic Ising machine, including: a closed loop including a phase and electro-optical conversion module and a storage, correlation and photoelectric conversion module connected in turn; a laser light source configured to generate and input an optical signal to the phase and electro-optical conversion module; and a microwave pulse local oscillator source configured to generate and input a microwave pulse signal to the phase and electro-optical conversion module. The phase and electro-optical conversion module is configured to modulate the microwave pulse signal, the optical signal, and a phase-specific two-phase microwave pulse spin electrical signal input from the storage, correlation and photoelectric conversion module to obtain and input a phase-specific two-phase microwave pulse spin optical signal to the storage, correlation and photoelectric conversion module for storage and correlation.

Abstract: The invention relates to an NMR system, and more particularly to an NMR measurement unit including a flow channel for separating a sample from a fluid stream in a process channel, a magnet arranged relative to flow channel for creating a magnetic field in part of flow channel, a coil arranged relative to flow channel for exciting NMR active nuclei of the sample in flow channel and for receiving the frequency pulse that returns to coil from NMR active nuclei, a frame comprising a fastening flange for sealing NMR measurement unit to process channel and a chamber that is closed relative to fluid stream and connected to fastening flange, arranged to be installed mainly inside process channel, within which chamber magnet and coil are arranged and through which chamber the flow channel passes, the frame installable such that flow channel is positioned inside process channel.

Abstract: Techniques are disclosed for use in magnetic resonance imaging (MRI) for exciting spins of a first material and spins of a second material. A first spin echo signal is acquired when the excited spins include a first phase difference, which is given by ?, and a second spin echo signal is acquired when the excited spins of the first material and the excited spins of the second material include a second phase difference, which is given by ??. An absolute value of ? lies within the interval ]0,?[. A first image for the first material and/or a second image for the second material is generated by a computing unit depending on the first spin echo signal and the second spin echo signal.

Abstract: Devices, systems, and methods for enhancing MRI image quality and tracking accuracy in MR-guided treatment systems are described.

Abstract: A system and method are provided for controlling a magnetic resonance imaging (MRI) system. The method includes performing a gradient echo pulse sequence that includes a phase increment of an RF pulse of the gradient echo pulse sequence selected to encode diffusion information into a phase of MR signals. The method also includes controlling the plurality of gradient coils and the RF system to acquire the MR signals as MR data, processing the MR data to determine MR signals corresponding to diffusion in the subject when acquiring the MR signals, and generating at least one of an image or a map of the subject indicating the diffusion in the subject from the MR data.