DANB RADIOLOGY EXAM WITH 100%
CORRECT ANSWERS
For image mounting: - Answer- -Mount as if patient is facing you
-Raised dot = identification
-Correct left/right orientation
Retakes increase... - Answer- Radiation
Technique Error : Herringbone pattern - Answer- Tire tracks on image due to film being
placed in the mouth backwards
Point of entry - Answer- Position of the patient's face to which the central beam is aimed
Avoid excessive levels of radiation to patient by: - Answer- -Correct positioning
-Clear instructions to patient
-Stabilizing sensor
-Check angulation before exposure
Maxillary Landmarks: - Answer- -Maxillary sinus
-Nasal cavity
-Incisive foreman
-Zygomatic process
-Maxillary tuberosity
Mandibular Landmarks: - Answer- -Mental foreman
-Mandibular canal
-Genial tubercles
-External oblique ridge
-Submandibular fossa
Radiolucent - Answer- Dark, air space/soft tissue
Radiopaque - Answer- White, bone
Radiolucent Landmarks: - Answer- -Maxillary sinus
-Nasal cavity
-Mental foreman
-Mandibular Canal
, Maxillary sinus location: - Answer- Big, above molars
Nasal cavity location: - Answer- Above incisors
Mental foreman location: - Answer- Near premolars, round/oval
Mandibular canal location: - Answer- Runs through mandible towards (under) molars,
long dark band
Radiopaque Landmarks: - Answer- -Genial tubercles
-Zygomatic process
-External oblique ridge
-Submandibular fossa
Genial tubercle location: - Answer- Dot center of chin
Purposes of dental radiographs include: - Answer- -Detecting cavities/carries
-Check bone level
-Detect infections
-Evaluate shape/length
-Locate impacted teeth
-Evaluate trauma
X-ray machine parts: - Answer- -Tubehead
-Position Indicating Device (PID)
-Extension Arm
-Control Panel
Tubehead parts: - Answer- -Houses dental X-ray tube
-Collimator: Primary function is to restrict the size of the beam
-Filter: Aluminum disc, primary function is to remove low energy, long wavelength x-rays
PID parts: - Answer- -Aiming device
-Uusally 8, 12, or 16 inches long
-Longer is more effective in reducing exposure
-Comes in cylindrical or rectangular (ALARA)
Phosphor plates - Answer- -1 image per plate
-Reusable for intra and extraoral
-Scanner needed for converting plate into image
Digital imaging process: - Answer- -Faster than film
-Less radiation
-Instant imaging
-Sensors or PSP plates
CORRECT ANSWERS
For image mounting: - Answer- -Mount as if patient is facing you
-Raised dot = identification
-Correct left/right orientation
Retakes increase... - Answer- Radiation
Technique Error : Herringbone pattern - Answer- Tire tracks on image due to film being
placed in the mouth backwards
Point of entry - Answer- Position of the patient's face to which the central beam is aimed
Avoid excessive levels of radiation to patient by: - Answer- -Correct positioning
-Clear instructions to patient
-Stabilizing sensor
-Check angulation before exposure
Maxillary Landmarks: - Answer- -Maxillary sinus
-Nasal cavity
-Incisive foreman
-Zygomatic process
-Maxillary tuberosity
Mandibular Landmarks: - Answer- -Mental foreman
-Mandibular canal
-Genial tubercles
-External oblique ridge
-Submandibular fossa
Radiolucent - Answer- Dark, air space/soft tissue
Radiopaque - Answer- White, bone
Radiolucent Landmarks: - Answer- -Maxillary sinus
-Nasal cavity
-Mental foreman
-Mandibular Canal
, Maxillary sinus location: - Answer- Big, above molars
Nasal cavity location: - Answer- Above incisors
Mental foreman location: - Answer- Near premolars, round/oval
Mandibular canal location: - Answer- Runs through mandible towards (under) molars,
long dark band
Radiopaque Landmarks: - Answer- -Genial tubercles
-Zygomatic process
-External oblique ridge
-Submandibular fossa
Genial tubercle location: - Answer- Dot center of chin
Purposes of dental radiographs include: - Answer- -Detecting cavities/carries
-Check bone level
-Detect infections
-Evaluate shape/length
-Locate impacted teeth
-Evaluate trauma
X-ray machine parts: - Answer- -Tubehead
-Position Indicating Device (PID)
-Extension Arm
-Control Panel
Tubehead parts: - Answer- -Houses dental X-ray tube
-Collimator: Primary function is to restrict the size of the beam
-Filter: Aluminum disc, primary function is to remove low energy, long wavelength x-rays
PID parts: - Answer- -Aiming device
-Uusally 8, 12, or 16 inches long
-Longer is more effective in reducing exposure
-Comes in cylindrical or rectangular (ALARA)
Phosphor plates - Answer- -1 image per plate
-Reusable for intra and extraoral
-Scanner needed for converting plate into image
Digital imaging process: - Answer- -Faster than film
-Less radiation
-Instant imaging
-Sensors or PSP plates
