TCDHA Rad Chap 1-8, 17, 19 Exam With 100% Correct Answers 2023

TCDHA Rad Chap 1-8, 17, 19 Exam With 100% Correct Answers 2023 radiolucent - Correct 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 - Correct Answer-appears white or light on a radiograph dense tissues are hard or thick ex. enamel, dentin, bone density - Correct Answer-refers to the overall blackness or darkness on a dental radiograph what happens to a film if the density is too high - Correct Answer-it will appear dark what will influence the density of a radiograph - Correct Answer-an increase or decrease in mA, kVp, exposure time, and subject thickness increased mA in density = - Correct Answer-high density decreased mA in density = - Correct Answer-low density increased kV in density = - Correct Answer-high density decreased kV in density = - Correct Answer-low density increased kV in contrast = - Correct Answer-low contrast decreased kV in contrast = - Correct Answer-high contrast if mA is increased, the image will appear - Correct Answer-it will appear radiopaque If kVp is decreased, the image will appear - Correct Answer-it will appear radiolucent if exposure time decreases, the film density .......... resulting in a ........... image - Correct 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 - Correct Answer-radiolucent contrast - Correct 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 - Correct Answer-a dental image that has very dark areas and very light areas low contrast - Correct 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 - Correct Answer-black and white low kVp = short-scale contrast = high contrast long-scale contrast - Correct Answer-many shades of gray high kVp = long-scale contrast = low contrast film contrast - Correct Answer-characteristics of a film that influence contrast ex. film processing and quality of the firm subject contrast - Correct Answer-characteristics of the subject that influence contrast ex. thickness, density of subject can be altered by changing the kVp stepwedge - Correct Answer-used to demonstrate short-scale contrast and long-scale contrast sharpness - Correct Answer-reproduction of distinct outlines of an object (tooth) on a dental radiograph if the image appears fuzzy, then it is known as what - Correct Answer-penumbra what is the sharpness of a radiograph influenced by - Correct Answer-focal spot size film composition movement focal spot size - Correct Answer-the smaller the focal spot area, the sharper the image (vice versa) film composition - Correct Answer-faster dental film contains larger crystals producing less image sharpness (vice versa) large crystals fo not produce object outlines movement - Correct Answer-if the client or film moves during radiation exposure, lack of detail and definition will result on a processed radiograph magnification - Correct Answer-exhibits a radiographic image larger than the actual size of the object (tooth) it represents results from the divergent path of the x-ray beam it is affects by the target-receptor and the object-receptor distance longer PID = - Correct Answer-less image magnification shorter PID = - Correct Answer-more image magnification distortion - Correct Answer-a variation in the true size and shape of the object being radiographed affected by object-receptor alignment and x-ray beam angulation the object and film must be parallel to each other decreased focal spot size = - Correct Answer-increased sharpness increased crystal size = - Correct Answer-decreased sharpness decreased crystal size = - Correct Answer-increased sharpness decreased movement = - Correct Answer-increased sharpness increased movement = - Correct Answer-decreased sharpness increase target-receptor distance = - Correct Answer-decrease magnification increase object-receptor distance = - Correct Answer-increase magnification decrease object-receptor distance - Correct Answer-decrease magnification