RHS 2024 Exam Questions with Correct Answers

RHS 2024 Exam Questions with Correct Answers Ideal temp for xray development solution - Answer-68 degrees Incorrect horizontal angulation - Answer-overlap/superimposition earliest sign of skin exposure to radiation - Answer-erythema recommended collimation of primary beam at pt's skin surface - Answer-2.75 lead diaphram - Answer-collimator filter - Answer-aluminum disk most effective way to reduce exposure to genetic tissue - Answer-lead apron most radiolucent structure of teeth - Answer-pulp chamber object-target - Answer-tooth-film object-film distance increases - Answer-more distortion proper collimation of primary beam will reduce - Answer-leakage radiation remnant radiation secondary radiation object-film distance should be as large or as small as possible? - Answer-small What is the purpose of an aluminum filter? - Answer-to eliminate the longer, less penetrating x-rays from the primary beam total accumulated dose for a 28 year old occupationally exposed worker - Answer-50 electrons are driven at a high rate of speed across the tube gap from what to what? - Answer-cathode to anode recommended minimum distance from target to skin is - Answer-8 inches elongation - Answer-insufficient vertical angulation cone cutting - Answer-not centering the cone completely over the film packet Radiation adversely affects living tissue though a process called - Answer-ionization The wavelengths of xrays are shorter or longer than the wavelengths of visible light? - Answer-shorter Patients who absolutely cannot tolerate intraoral films are best radiographed using which supplemental technique? - Answer-panorex (a.k.a. PAN) How long should films be left in the developer? - Answer-It depends on the temp How long should film be left in the fixer? - Answer-10 minutes Ionization occurs when - Answer-electrons are dislodged from the outer shell of an atom If lead foil was omitted from the film packet during packaging what would be affected the most? - Answer-Sharpness Failure to place dental film parallel to the tooth being radiographed will result in what? - Answer-Distortion If the mA is decreased while keeping the exposure time and kVp constant, the resulting film will appear - Answer-lighter