Fluoroscopy questions with correct answers

Fluoroscopy mA range is Answer 0.5-5.0 During fluoroscopy the SOD cannot be less than how many inches on a mobile unit Answer 12 The input screen absorbs ______________ and emits _______________ Answer X-ray photons, light photons Electrostatic lenses are used to accelerate and focus Answer Electrons The photocathode absorbs ____________ and emits ______________ Answer Light photons, electrons The shape of the input screen helps control Answer Distortion The greater the voltage supplied to the electrostatic lenses, the __________ the acceleration and the ____________ the focal point to the input screen Answer Greater, closer Total brightness gain is Answer Measure of increase in image intensity, determined by minification and flux gain The edge distortion problem in image intensification tubes is called Answer Vignetting