If the patient's lips are not closed on the bite-block during the exposure of a panoramic Have the patient remove her partial denture.ĭ. Use a lead apron without a thyroid collar.Ĭ. What do you need to do to correct the error?ī. The panoramic image of your patient has two radiopaque areas, one on each side, in A ghost image appears _ than/of its actual counterpart.ĭ. The first part of the statement is false the second part of the statement is true. The first part of the statement is true the second part of the statement is false.ĭ. You should have your 75-year-old patient remove her partial dentures and her hearingĪids before taking a panoramic image because ghost images occur that could cover diagnosticī. A cassette has _ intensifying screen(s).ĭ. Rare earth screens emit _ light and are considered faster than calcium tungstateĭ. Green-sensitive film must be paired with intensifying screens that produce _ĭ. a shutter in the cassette with visible light. intensifying screens in a cassette holder.ĭ. The first statement is false the second statement is true. Of a structure that can cast a ghost image on the panoramic image.ĭ. Source can cast a ghost image on the panoramic image. An anatomic structure that is located outside of the focal plane and close to the x-ray The tubehead of the panoramic unit always rotates _ the patient's head as theĭ. can be adjusted for maxillary or mandibular imagings ANS: A 17. can be adjusted according to the size of the patient.ĭ. is fixed in position so that the x-ray beam is directed slightly downward.Ĭ. is fixed in position so that the x-ray beam is directed slightly upward.ī. The vertical angulation in the tubehead of the panoramic unitĪ. The collimator used in panoramic imaging has an opening in the shape of aĭ. restrict the size and shape of the x-ray beam.ĭ. align the patient's teeth as accurately as possible in the focal trough.Ĭ. The function of the collimator used in the panoramic x-ray machine is toĪ. Which component in the panoramic x-ray machine tubehead is most different from thatįound in an intraoral x-ray machine tubehead?ĭ. Have different receptor transport mechanisms.ĭ. All panoramic units have the same focal trough size and shape. The first statement is true the second statement is false.ĭ. Panoramic machines, the focal trough is wide in the anterior region and narrow in the posteriorĬ. The closer the rotation center is to the teeth, the narrower the focal trough.
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