RHS EXAM ACTUAL QUESTIONS AND ANSWERS

RHS EXAM ACTUAL QUESTIONS AND ANSWERS

WITH CORRECT VERIFIED SOLUTIONS.

✅Snap-A-Ray. Answer:recommended for posterior radiographs only

used for bisecting angle and paralleling technique

reusable

✅How to load a phosphor plate and sensor. Answer:select appropriate size for patient disinfect + dry place plastic barrier over plate place phosphor plate into the image receptor holding device with blank side facing PID source

select size of sensor disinfect place disposable barrier place sensor into image receptor holding device place sensor wire into the back of the image receptor with the front facing the x-ray source

✅Cotton rolls. Answer:digital image accessories

place one cotton roll between image receptor holding device + the teeth

acts as a medium

✅Thyroid collars. Answer:digital image accessories 1 / 3

recommended for intraoral exposures

✅Lead aprons. Answer:digital image accessories

protects the patient against secondary scatter radiation

recommended for intra oral and extra oral exposures

✅Intraoral exposures. Answer:periapical, bitewing, occlusal

✅Extraoral exposures. Answer:Panoramic and cephalometric

✅Periapical exposures. Answer:An intraoral exposure that shows the entire tooth (or teeth) and surrounding tissues including the apex or tip of the root

✅Occlusal projections. Answer:shows teeth and surrounding maxillary or mandibular structures

use if a child is difficult to manage or his/her mouth is small enough for one exposure

determines location of impacted teeth, localizes palate

✅Bitewing. Answer:shows the crowns of both the maxillary and mandibular teeth and interproximal areas of teeth

used for both posterior and anterior teeth

✅Cephalometric radiographs. Answer:Extraoral radiographs showing patient profiles, including bones and tissues

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aid in assessing the growth and development of teeth and underlying structures

w/o thyroid collar

✅Panoramic radiographs. Answer:Extraoral radiographs that show both the mandible and maxilla in their entirety

w/o thyroid collar

✅Paralleling technique. Answer:method for placing image receptors that is used with periapical and bitewing intraoral radiographs

recommended over bisecting angle technique

direct the PID perpendicular to the curvature of the arch, through the teeth that you are exposing

✅bisecting angle technique. Answer:or short cone technique is only used for periapical or when paralleling technique is not possible

exposure (cone cutting errors) more likely

requires a vertical angulation of positive 10 degrees to compensate for the slight bend of the upper portion of the image receptor and tilt of the maxillary teeth

✅When the teeth appear to be superimposed or have overalp, that is caused by.

Answer:horizontal overlap

✅If metallic or radiopaque objects are not removed before exposure. Answer:a ghost image results

objects like glasses, hair pins, earrings and dentures can cause ghost images

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