Abstract: Provided are a neurosteroid derivative solid dispersion, and a preparation method and use, and a drug containing a hot-melt extruded solid dispersion. A raw material mixture is subjected to melt extrusion at 125° C. to 160° C. to obtain the neurosteroid derivative solid dispersion, where the raw material mixture includes an active ingredient, a plasticizer and a carrier material, a mass ratio of the three being in a range of 10:1-15:10-90; the active ingredient includes at least one selected from the group consisting of a neurosteroid derivative (having a structure represented by formula 1), and an isomer, a solvate and a pharmaceutically acceptable salt thereof; the plasticizer is one or more selected from the group consisting of polyethylene glycol, poloxamer and Tween, the polyethylene glycol having an average molecular weight of less than 6000; and the active ingredient is present in an amorphous state.

Abstract: A neurosteroid derivative having a structure as represented by formula (IV), or a deuteride, and a pharmaceutically acceptable salt thereof, and use thereof are provided. In the formula (IV), R1 is selected from the group consisting of hydrogen and C1-C12 alkyl; and R2 is selected from R—(C?O)—, wherein R is selected from the group consisting of hydrogen and C1-C12 alkyl.

Abstract: A hospital bed may include a bed frame, a first bed board and an auxiliary component. The first bed board is connected to the bed frame. The auxiliary component may include a connecting frame, a first moving and supporting mechanism and a second bed board. The connecting frame is detachably connected to the first bed board. The first moving and supporting mechanism is connected to the connecting frame. The second bed board is connected to the first moving and supporting mechanism and can carry an object along the bearing direction. The second bed board is arranged on one side of the first bed board along the bearing direction. The first moving and supporting mechanism can drive the second bed board to move relative to the first bed board along an adjustment direction, where the adjustment direction is perpendicular to the bearing direction.

Abstract: A hospital bed may include a bed frame, a first bed board and an auxiliary component. The first bed board is connected to the bed frame. The auxiliary component may include a connecting frame, a first moving and supporting mechanism and a second bed board. The connecting frame is detachably connected to the first bed board. The first moving and supporting mechanism is connected to the connecting frame. The second bed board is connected to the first moving and supporting mechanism and can carry an object along the bearing direction. The second bed board is arranged on one side of the first bed board along the bearing direction. The first moving and supporting mechanism can drive the second bed board to move relative to the first bed board along an adjustment direction, where the adjustment direction is perpendicular to the bearing direction.

Abstract: In a protocol parameter selection method and corresponding device, when previewing a current sequence in multiple predetermined sequences, a corresponding reference performance index radar chart is displayed in a standard radar chart, according to a reference value of each performance index in multiple performance indices obtained in advance on the basis of the current sequence. The standard radar chart is a radar chart generated using the multiple performance indices as components and using as a standard a standard value of each performance index obtained in advance on the basis of at least one sequence. The method and device also include determining, as a sequence required for scanning, a current sequence selected according to the reference performance index radar chart and a performance index currently of interest.

Abstract: A digital mode matrix phase calibration includes acquiring an actual phase deviation ??mn forming an actual phase deviation matrix ?? of a factory system; calculating an ideal phase deviation forming an ideal phase deviation matrix; calculating a phase deviation of the actual phase deviation and the ideal phase deviation; acquiring a maximum value of the phase deviation; when the maximum value ??max is less than a preset threshold ?, calculating a field system phase deviation ??mn, and a field system phase deviation matrix ?? formed by the field system phase deviation ??mn subjecting a field system to phase calibration. By acquiring only one row and one column in the phase deviation matrix, the technical solution in embodiments of the present invention can fit phase deviations of other rows and columns, and the method subjects the system to phase calibration quickly.

Abstract: A patient monitoring method and apparatus for a medical imaging device are provided, which subject an examination subject positioned in the medical imaging device to real-time image capture. Two images are sampled spaced apart by a specified time and captured by a camera, and a difference is calculated to obtain a difference image matrix. The difference image matrix is used to determine whether the examination subject has moved using a predetermined threshold. A display presents an image captured by the camera in a pop-up window when it is determined that the examination subject has moved such that a medical imaging scan operating interface and the image captured by the camera are presented together. The display only presents the medical imaging scan operating interface (not an image captured by the camera) when it is determined that the examination subject has not moved.

Abstract: In a method and apparatus for magnetic resonance imaging preview and establishing an MR model, an MRI scanner is controlled so as to execute an MR model scan sequence to perform an MRI scan of a designated patient, to obtain an MR model of the patient. One type of scan sequence is sequentially selected from all types of scan sequence supported by the MRI device, and one parameter set is sequentially selected from at least one parameter set supported by this type of scan sequence. The selected sequence and the selected parameter set are used to subject the MR model to a virtual MRI scan, to obtain an MR preview image corresponding to the selected sequence and the selected parameter set for the sequence C. This is repeated for all types of scan sequence supported by the MRI scanner and all parameter sets supported by each type of scan sequence. An MR model of a patient can thereby be established, and MR images of the patient to be previewed quickly, before an MRI scan of the patient is actually begun.

Abstract: In a protocol parameter selection method and corresponding device, when previewing a current sequence in multiple predetermined sequences, a corresponding reference performance index radar chart is displayed in a standard radar chart, according to a reference value of each performance index in multiple performance indices obtained in advance on the basis of the current sequence. The standard radar chart is a radar chart generated using the multiple performance indices as components and using as a standard a standard value of each performance index obtained in advance on the basis of at least one sequence. The method and device also include determining, as a sequence required for scanning, a current sequence selected according to the reference performance index radar chart and a performance index currently of interest.

Abstract: A digital mode matrix phase calibration includes acquiring an actual phase deviation ??mn forming an actual phase deviation matrix ?? of a factory system; calculating an ideal phase deviation forming an ideal phase deviation matrix; calculating a phase deviation of the actual phase deviation and the ideal phase deviation; acquiring a maximum value of the phase deviation; when the maximum value ??max is less than a preset threshold ?, calculating a field system phase deviation ??mn, and a field system phase deviation matrix ?? formed by the field system phase deviation ??mn subjecting a field system to phase calibration. By acquiring only one row and one column in the phase deviation matrix, the technical solution in embodiments of the present invention can fit phase deviations of other rows and columns, and the method subjects the system to phase calibration quickly.

Abstract: In a method and apparatus for magnetic resonance imaging preview and establishing an MR model, an MRI scanner is controlled so as to execute an MR model scan sequence to perform an MRI scan of a designated patient, to obtain an MR model of the patient. One type of scan sequence is sequentially selected from all types of scan sequence supported by the MRI device, and one parameter set is sequentially selected from at least one parameter set supported by this type of scan sequence. The selected sequence and the selected parameter set are used to subject the MR model to a virtual MRI scan, to obtain an MR preview image corresponding to the selected sequence and the selected parameter set for the sequence C. This is repeated for all types of scan sequence supported by the MRI scanner and all parameter sets supported by each type of scan sequence. An MR model of a patient can thereby be established, and MR images of the patient to be previewed quickly, before an MRI scan of the patient is actually begun.

Abstract: The present invention provides a method for indicating differentiation between tissues. For each tissue amongst multiple tissues, a magnetization vector corresponding to each tissue is generated on the basis of a random scan sequence; on the basis of the magnetization vector corresponding to each of the multiple tissues, a differentiation-indicating value between each pair of the multiple tissues is calculated. Thus, a physician can select a suitable random scan sequence, according to the method provided in the present invention, and generate a magnetic resonance image comprising multiple brightness curves corresponding to multiple tissues, such that the trends of the brightness curves corresponding to the multiple tissues in the magnetic resonance image differ significantly. The present invention also provides a device for indicating differentiation between tissues.

Abstract: The present invention provides a method for indicating differentiation between tissues. For each tissue amongst multiple tissues, a magnetization vector corresponding to each tissue is generated on the basis of a random scan sequence; on the basis of the magnetization vector corresponding to each of the multiple tissues, a differentiation-indicating value between each pair of the multiple tissues is calculated. Thus, a physician can select a suitable random scan sequence, according to the method provided in the present invention, and generate a magnetic resonance image comprising multiple brightness curves corresponding to multiple tissues, such that the trends of the brightness curves corresponding to the multiple tissues in the magnetic resonance image differ significantly. The present invention also provides a device for indicating differentiation between tissues.