TCDHA Rad Chap 1-8, 17, 19 Questions and Answers 100% Verified.

radiolucent - ANSWER-appears black or dark on a radiograph insufficient density tissues are soft or thin ex. air spaces, soft tissue, dental pulp, PDL space radiopaque - ANSWER-appears white or light on a radiograph dense tissues are hard or thick ex. enamel, dentin, bone density - ANSWER-refers to the overall blackness or darkness on a dental radiograph what happens to a film if the density is too high - ANSWER-it will appear dark what will influence the density of a radiograph - ANSWER-an increase or decrease in mA, kVp, exposure time, and subject thickness increased mA in density = - ANSWER-high density decreased mA in density = - ANSWER-low density increased kV in density = - ANSWER-high density decreased kV in density = - ANSWER-low density increased kV in contrast = - ANSWER-low contrast decreased kV in contrast = - ANSWER-high contrast if mA is increased, the image will appear - ANSWER-it will appear radiopaque If kVp is decreased, the image will appear - ANSWER-it will appear radiolucent if exposure time decreases, the film density .......... resulting in a ........... image - ANSWER-decreases, radiolucent if client has an increase amount of soft tissue or dense bone, fewer x-rays reach the film; therefore, the radiograph will have less density and will appear - ANSWER-radiolucent contrast - ANSWER-refers to the difference in degrees of density/blackness on a radiograph difference in the amount of light transmitter through adjacent areas on a dental radiograph high contrast - ANSWER-a dental image that has very dark areas and very light areas low contrast - ANSWER-a dental image that does not have very dark and very light areas but instead has many shades of gray short-scale of contrast - ANSWER-black and white low kVp = short-scale contrast = high contrast long-scale contrast - ANSWER-many shades of gray high kVp = long-scale contrast = low contrast film contrast - ANSWER-characteristics of a film that influence contrast ex. film processing and quality of the firm subject contrast - ANSWER-characteristics of the subject that influence contrast ex. thickness, density of subject can be altered by changing the kVp stepwedge - ANSWER-used to demonstrate short-scale contrast and long-scale contrast