Abstract: A method for data acquisition and transmission in PET may be provided. The method may include obtaining a region of interest (ROI) of an object. The method may also include determining one or more target pairs of detectors among a plurality of detectors of an imaging device based on the ROI of the object. A response of line (LOR) corresponding to each pair of the one or more target pairs of detectors may pass though the ROI when the object is located in a detection region of the imaging device. The method may further include obtaining target coincidence events corresponding to the ROI of the object based on the one or more target pairs of detectors of the imaging device.

Abstract: The knob screen device includes a glass touch cover plate, a display screen, a screen support frame, a semi-transparent turning structure, an annular light-leading friction shim, at least one battery, a mainboard and a magnetic attraction assembly. The knob screen device further comprises: at least one Hall sensor provided on the mainboard; at least one multicolor LED ambient light provided on the mainboard; and at least one annular multipolar flexible magnet provided in the semi-transparent turning structure. The semi-transparent turning structure is connected to external component by means of the magnetic attraction assembly. In this way, the knob screen device is simple in structure, low in cost, easy to process and install and more flexible in application circumferences.

Abstract: There is provided a deep brain stimulation system having k focuses, which comprises: a first electrode and a second electrode, used for connecting one side of a brain scalp; a third electrode and a fourth electrode, used for connecting the other side of the brain scalp; and a first signal generation unit, a second signal generation unit, . . . , a (2k?1)th signal generation unit and a 2kth signal generation unit, wherein the k is a positive integer greater than or equal to 2; and each of the signal generation units is used for providing the following currents for the first electrode to the fourth electrode: a first current and a second current, which are interfered at a deep portion of a brain to form a first focus; and a (2k?1)th current and a 2kth current, which are interfered at the deep portion of the brain to form a kth focus.

Abstract: The present disclosure discloses a deep brain stimulation system having k focuses, which comprises: a first electrode and a second electrode, used for connecting one side of a brain scalp; a third electrode and a fourth electrode, used for connecting the other side of the brain scalp; and a first signal generation unit, a second signal generation unit, . . . , a (2k?1)th signal generation unit and a 2kth signal generation unit, wherein the k is a positive integer greater than or equal to 2; and each of the signal generation units is used for providing the following currents for the first electrode to the fourth electrode: a first current and a second current, which are interfered at a deep portion of a brain to form a first focus; and a (2k?1)th current and a 2kth current, which are interfered at the deep portion of the brain to form a kth focus; for the first current, the second current, . . .