click below
click below
Normal Size Small Size show me how
contrast-DENH
Question | Answer |
---|---|
what is contrast between film/object? | degrees of blackness between areas |
what is high contrast(SHORT)? | black & white (KVP less than 65), NOT GOOD FOR PATHOLOGIES |
WHAT IS LOW CONTRAST(LONG)? | SHADES OF GREY (KVP 90-100), GOOD FOR CARIES & BONE LOSS |
WHAT IS CONTRAST: FILM/OBJECT DETERMINED BY? | THICKNESS OF OBJECT, DENSITY OF OBJECT, CHEMICAL COMPOSITION OF OBJECT, QUALITY OF BEAM (KVP), AND SCATTER RADIATION |
WHAT IS CONTRAST: FILM? | SHOWS DIFFERENCES IN SUBJECT (DENSITY) |
WHAT IS CONTRAST: FILM DETERMINED BY? | AMT OF RADIATION/EXPOSURE, PROPERTIES OF FILM, INTENSIFYING SCREENS, FILM PROCESSING,VIEWING CONDITIONS |