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UNIT 7 RADIOLOGY
IMAGE RECEPTORS
Question | Answer |
---|---|
WHAT IS THE MAIN PURPOSE OF AN INTENSIFYING SCREEN | TO REDUCE THE AMOUNT OF EXPOSURE REQUIRED TO PRODUCE AN IMAGE |
WHAT % OF THE LATENT IMAGE IS MADE BY LIGHT FROM THE INTENSIFYING SCREENS | 99% |
WHAT EFFECT DOES SCREEN SPEED HAVE ON RECORDED DETAIL | AS SCREEN SPEEDS INCREASES-DETAIL DECREASES AS SCREEN SPEED DECREASES-DETAIL INCREASES |
WHAT SCREEN SPEED SHOULD BE USED FOR EXTREMITIES | SLOW SCREENS |
WHAT IS FILM EMULSION MADE UP OF | GELATIN AND SILVER HALIDE CRYSTALS |
WHAT IS THE FILM BASE MADE UP OF | SHEETS OF POLYESTER PLASTIC TINTED A PALE BLUE OR BLUE GREY |
WHAT IS AN ARTIFACT | AN ERRONEOUS PORTION OF AN IMAGE OR TRACING THAT DOES NOT ACCURATLY REPRESENT THE SUBJECT OF THE IMAGE OR MEASUREMENT BEING RECORDED |
WHICH TYPE OF PHOSPHORS IS USED IN MOST INTENSIFYING SCREENS TODAY | RARE EARTH PHOSPHORS |