________ is the removal of knee cartilage

Which of the following is a telecommunications system?

A. Public Safety Answering Point (PSAP) B. Personal Alert Safety System (PASS) C. Federal Communications Commission (FCC) D. National Fire Incident Reporting System (NFIRS)

Match the following terms with the correct statement below.

a. average gradient b. long scale contrast c. Compton interactions d. low contrast e. short scale contrast f. high contrast g. photoelectric interactions h. subject contrast 1. fewer shades of gray across the final image 2. the same as low contrast 3. responsible for high contrast densities on images 4. contributing factor to total image contrast 5. used to calculate slope of the H and D curve 6. high contrast