Which of the following best describes RIS used in digital imaging?

Which of the following manufacturers use a symbol of an S as their exposure indicators?

A method of digital image subtraction in which the frame that contains the greatest amount of contrast material in vessels is identified and is then subtracted from all subsequent images.  Live fluoroscopic images of the catheter moving through the vasculature can then be seen even after the vessels contain less contrast defines _____.

Which of the following are true in regards to ABC? ABC stands for Actual Brightness Calculation The ABC increases or decreases mA to compensate for various body thickness The purpose of ABC is to maintain image density and contrast at a constant brightness Rapid changes in body thickness can cause the ABC to lag behind

The total amount of filtration required for x-ray units operative between 50-70 kVp is:

Calculate the size of geometric unsharpness for an image taken with a 2.0-mm focal spot, at a 72 inch SID and an OID of 6 inches.

Which of the following materials may be used as the interspace material for radiographic grids? Plastic fiber Aluminum Lead

Which type of digital imaging artifact shows up as patterns of small blocks on an image that have block-like images of different intensity or brightness?

In an image intensification tube, 5,000 x-ray photons exit the patient and interact with the input phosphor and 125,000 light photons are released from the output phosphor.  What is the flux gain?

Choose the two (2) responses that accurately describe a radiographic examination table: