RADT 146 COMPREHENSIVE EXAM SCRIPT VERIFIED QUESTIONS ANSWERS ACCURATE SOLUTIONS PACK

RADT 146 COMPREHENSIVE EXAM SCRIPT
VERIFIED QUESTIONS ANSWERS
ACCURATE SOLUTIONS PACK

●● SID
Answer: source to image distance


●● SOD
Answer: source to object distance


●● OID
Answer: object to image distance


●● the variation in x-ray intensity along the longitudinal tube axis
Answer: Anode Heel Effect


●● region of shadow at the edges of an object's image caused by the
focal spot
Answer: penumbra


●● inclination of an object results in a foreshortened image
Answer: foreshortening

, ●● what are the characteristics of image quality?
Answer: definition, resolution, detail, sharpness, visibility of detail, edge
gradient, & umbra


●● change in tube or IR alignment
Answer: Elongation


●● what does image quality mean?
Answer: visible sharpness of the image


●● tube, object, IR not in alignment causes radiographic quality
Answer: object position


●● random fluctuation in the density
Answer: noise


●● irregular clumping of silver halide crystals
Answer: film graininess


●● factors affecting image quality
Answer: noise, distortion, focal-spot blur, and subject factors