Digital x-ray imaging system is composed of an x-ray generator and a digital image acquisition system. In this paper, we
designed a wireless trigger pulse generation circuit, detection trigger board, to capture the image accurately by
established the synchronization between x-ray generator and digital image acquisition system and we analyzed its
performance and compared to conventional method.
There are two pulses generated by this study, the ACQ_START pulse, which indicates the detection of x-ray radiation
from x-ray generator, and the ACQ_END pulse, which indicates the x-ray disappearance from x-ray generator. These
trigger the image acquisition system of digital x-ray imaging system, to start the image capturing or to stop. Geiger tube
were used to detect x-ray radiation from the air. Image acquisition is activated only this time between ACQ_START and
ACQ_END signal.
By detecting the x-ray radiation signal from the air and generate the trigger pulses, we can get more accurate timing for
capturing the x-ray image. Also, owing to omitting the installation wire between x-ray generator and digital image
acquisition system, Installation will be very easy. In addition to that, any type of x-ray generator can be installed without
incompatibility.
With this experiment, we tried to capture images of the resolution chart to compare the experimental result. We got 3.5
line pair / mm resolution at 20 mAs of x-ray level with resolution chart. This is same or better image comparing to
conventional way.
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