Please select the most similar patent number from A, B, C and D. Which number is?
An ultrasonic nerve regulating device, comprising a planar ultrasonic transducer (100), an acoustic lens (200) and an acoustic wave collimator (300), wherein the planar ultrasonic transducer (100), the acoustic lens (200) and the acoustic wave collimator (300) are arranged in sequence; and the acoustic lens (200) is configured to regulate planar ultrasonic waves to focus obliquely, is in a shape formed by a major arc line and a straight line connected to two ends of the major arc line, and comprises a plurality of concentrically arranged split rings (110). The planar ultrasonic transducer (100) emits the planar ultrasonic waves, and the planar ultrasonic waves are obliquely focused through the acoustic lens (200). Therefore, focusing may be adjusted to a preset position by adjusting the angle of inclination, and nerve stimulation can be carried out without fixing an animal.
A: A head-mounted ultrasound stimulation device (100) and system, the device (100) comprising a shell (10) for covering the head of a user, and a coupling sheath (20) provided inside the shell (10), wherein space (70) between the coupling cover (20) and the shell (10) is filled with coupling liquid, and the coupling sheath (20) contacts the head of the user when it is worn; the shell (10) is mounted with a two-dimensional area-array transducer (30), a data transceiving unit (40), a integrated circuit (50) and a power supply (60), wherein, the data transceiving unit (40) is used for receiving stimulation data from a control device (200), the stimulation data including data for controlling intensity and a focal position of a sound field generated by the two-dimensional area-array transducer (30); the integrated circuit (50) is used for converting the stimulation data into stimulation signals; the two-dimensional area-array transducer (30) is used for generating a focused ultrasonic field under stimulation by the stimulation signals to stimulate intracranial nerve cells; and the power supply (60) is used for supplying power to the data transceiving unit (40) and the integrated circuit (50). The device (100) can generate a focused sound field having a plurality of focal points, wherein, positions of the focal points and intensity of the sound field are adjustable, so as to make accurate multi-focal ultrasonic stimulation on the brain cell nucleus, thereby playing a curing effect. This device is easily operable.
B: An acoustic wave focusing lens (22) and an ultrasonic imaging device and method. The acoustic wave focusing lens (22) has a simple structure and comprises a plurality of concentric annuluses (11), two adjacent annuluses (11) forming a slot (12). The annuluses (11) are made from a rigid material and have the same thickness. The slots (12) in the acoustic wave focusing lens (22) narrow sequentially from inside to outside. The structure is easily processed, has a low cost, is fitted to a plane ultrasonic transducer (21) and is flexibly used. Imaging of objects having different depths is achieved by changing the frequency of emission acoustic waves of the plane ultrasonic transducer (21).
C: An imaging method and apparatus based on a row and column addressing annular ultrasonic transducer. The row and column addressing annular ultrasonic transducer comprises row array elements and column array elements, and the row array elements are annular. Sound waves are sequentially emitted by triggering the row array elements, so as to generate first cylindrical waves having target inclinations, thereby achieving a multi-angle cylindrical wave composite emission focusing mode, and achieving emission focusing in an elevation direction; and then the column array elements receive first echo signals, thereby achieving reception focusing in a transverse direction. Sound waves are sequentially emitted by triggering the column array elements, so as to generate second cylindrical waves having target axis positions, thereby achieving a multi-virtual-point-source divergent wave composite emission focusing mode, and achieving emission focusing in the transverse direction; and then the row array elements receive second echo signals, thereby achieving reception focusing in the elevation direction. Therefore, the present application achieves the emission and reception focusing in the elevation direction and the transverse direction, achieves the use of a rapid imaging technology in the row and column addressing annular ultrasonic transducer, and improves the imaging quality and speed.
D: A super-resolution ultrasonic microscopy device and an application thereof. The super-resolution ultrasonic microscopy device comprises a planar ultrasonic transducer (10), an acoustic artificial structure (20), and an imaging device (30). A transmitting end of the planar ultrasonic transducer (10) transmits an ultrasonic sound wave signal of a specific frequency, the ultrasonic sound wave undergoes diffraction after passing through the acoustic artificial structure (20) and forms an ultra-diffraction limit focused sound field area (40) along the transmission direction of the ultrasonic sound wave on one side of the acoustic artificial structure (20) away from the planar ultrasonic transducer (10), the ultrasonic sound wave blocked by an object to be imaged that is placed in the ultra-diffraction limit focused sound field area (40) is reflected to the planar ultrasonic transducer device (10) and is received thereby, and finally the received signal is transmitted to the imaging device (30) for ultrasonic imaging, producing an imaged image with a higher resolution.
Answer: A