There are two different types of waves that come out of X-ray. Which are long wavelengths and short wavelengths, short wavelengths have higher energy to go through the patient or able to absorb, thus create image contrast. But long wavelengths have lower energy compare to short wavelengths, which tend to bounce of the patient and create scattered radiation. 

  When our product is attached to C-arm, it will filter out only long wavelengths therefore our product can reduce the amount of exposure while affects very little to image quality.