What is function of High frequency X-ray machine has the characteristic and the superiority ?

Perlong high frequency X-ray machine features below:
1, the patient's skin dose low: industrial frequency machine especially single-phase full-wave rectifier X-ray equipment , the high voltage transformer is pulstin current output waveform, ripple coefficient 100%, on imaging without any help more soft rays composition. High-frequency machine high voltage generator is similar to the output waveform constant dc, pulse rate is very low, corrugated coefficient "plus or minus 5%, the output of the X-ray energy oneness, the patient's skin greatly improve greatly reduced dose.

2, the image quality high: the continuous spectrum of x line, and the material of the absorption don't abide by the rules index, the rays through the material after, not only have the reduction of the number of photons, but also the photon energy changes, the image quality is poorer. And single can narrow X-ray generator , material to the absorption abide by law index, the rays through material later, only the reduction of the number of photons, no photon energy change, to improve the image quality is very favorable.

3, output dose great: for high frequency machine is a constant dc exposure, therefore, in the film to get the same black of c, high-frequency machine power frequency value is mAs 60% of the machine. For example the total wave rectifier X-ray single machine, a pulse duration for 10 ms, more than 0.707 times of peak for time is about 5 ms, and high frequency machine constant dc exposure of 10 ms is the single dose of x line machine wave dc exposure of ms 20 doses. If exposure in the same time, high frequency machine use 300 mA provides X-ray dose and single phase all the wave rectifier 500 mA X-ray machine provide basic same x line dose.

Article: from perlong medical (http://www.pl999.net)
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