Document No.:
9
/
91
received images will be displayed on the screen successively. With respect to displayed
images, gray-scale modulation is conducted to the received sound beam signal intensity,
achieving a plane image identical to the actual section. The reflected ultrasonic wave is
received by the energy converter to convert the sound energy into electrical energy. This
electrical signal is amplified and sent to the digital scanning converter (DSC) for filtering,
detection and compression. Due to the difference between the emission scanning imaging
mode and the imaging display direction and different imaging speed, in order to achieve the
real-time imaging of 2D section, a digital scanning converter (DSC) must be designed in the
instrument to convert the emission scanning mode into the imaging scanning mode, and a
series of image digital processing shall be carried out in the digital scanning converter (DSC)
to finally form a high-resolution section image displayed on the screen. Secondly, the 3D
probe is driven by two motor units to drive the crystal oscillator on the top of the probe to
rotate and swing. Of which, the lower stepping motor drives the crystal oscillator to rotate for
180 degrees, and the upper stepping motor drives the crystal oscillator to swing for 120
degrees. When the lower stepping motor reaches the edge position and is fixed, the upper
stepping motor swings back and forth for 120 degrees, and an ultrasound image is
generated. Then, make the lower stepping motor rotate for 15 degrees and fix, the upper
stepping motor swings for 120 degrees to obtain the second image. Next, make the lower
stepping motor rotate for 15 degrees, the upper stepping motor scan again and so forth,
until the lower stepping motor rotates for 180 degrees and stops. At this time, we have
obtained 13 images, with 12 images being processed and for calculation to obtain the final
bladder volume.
3.5 Instrument composition
●Instrument model: M4-HD
●The instrument is composed of a handheld wireless scanning device and a tablet
computer (including 3D mechanical sector-scanning probe: 2.5MHZ)
●Software: Version M4-HD_V1.0.0.1
●One charger: Model: HXY-084V1500A-UL, input: AC100-240Vac Adjustment range:
AC80-264V 50/60Hz 0.5A, Output: No-load output voltage range: 8.35-8.65V, Full-load
