CIT Radiography & Imaging Flashcards
7 cards from real CIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 CIT Radiography & Imaging flashcards as text
Which radiographic finding most strongly suggests peri-implant bone loss rather than normal crestal remodeling?
Answer: Vertical defect pattern extending apically along the implant body
Vertical or saucer-shaped defects extending apically along the implant indicate peri-implantitis rather than normal initial remodeling.
In cone beam computed tomography (CBCT), what does the term 'voxel size' refer to?
Answer: The three-dimensional resolution unit of the reconstructed volume
Voxel size is the three-dimensional pixel unit that defines spatial resolution in CBCT volumes.
A patient presents with a CBCT showing a dense, well-corticated radiopaque mass above the maxillary sinus floor. This is MOST consistent with:
Answer: Antrolith or rhinolith
A well-corticated radiopaque mass within or adjacent to a sinus is classic for an antrolith (sinus stone).
When assessing the mandibular canal on a panoramic radiograph prior to implant placement, which limitation is MOST clinically significant?
Answer: Magnification and distortion can misrepresent canal position relative to proposed implant site
Panoramic magnification and geometric distortion make precise canal localization unreliable without cross-sectional imaging.
Which CBCT artifact appears as bright streaks radiating from metallic restorations or implants?
Answer: Beam hardening artifact
Beam hardening causes bright streaks around dense metallic objects because low-energy photons are preferentially absorbed.
For digital periapical radiographs used in implant follow-up, the RECOMMENDED technique to ensure reproducible angulation is:
Answer: Paralleling technique with a film-holding device and aiming ring
The paralleling technique with a positioning device standardizes geometry, making sequential images comparable.
On a CBCT cross-section, which measurement is used to plan the safe distance between the proposed implant apex and the mandibular canal?
Answer: At least 2 mm of bone between the apex and the superior wall of the canal
A 2 mm safety zone between the implant apex and the mandibular canal is the widely accepted minimum to prevent nerve injury.