DASLE 2024 MN QUESTIONS MARKING SCHEME NEW UPDATE (VERIDIED 100% PASS)
Ionization - Answers -The production of ions, or the process of converting an atom into ions. Ions are positive, electrons are negative
Structures that absorb x-rays are what? - Answers -Radiopaque (white)
Lingual foram...
DASLE 2024 MN EXAM QUESTIONS
MARKING SCHEME NEW UPDATE
(VERIDIED 100% PASS)
Ionization - Answers -The production of ions, or the process of converting an atom into
ions. Ions are positive, electrons are negative
Structures that absorb x-rays are what? - Answers -Radiopaque (white)
Lingual foramen of the mandible - Answers -...A small radiolucent dot inferior to the
apices of the mandibular incisors. Below CENTRALS, appears as a small radiolucent
circle directly inferior to the central incisors.
Mental foramen of mandible bone - Answers -Its the lateral aspect that allows nerves to
pass to the chin and lip. holes in chin. appears as a round to oval radiolucent area seen
near the apex of the second PREMOLAR.
(blocked out in red on picture)
Maxillary sinus - Answers -sinus on either side of the nasal cavity below the eyes. The
maxillary sinus appears as a radiolucent area superior and medial to the border of the
maxillary sinus.
Mental ridge - Answers -A thick radiopaque band that extends from the premolar region
to the incisor region. Appears as two oblique thick radiopaque bands that that meet in
the midline giving it the appearance of an inverted V or triangle shape
Incisive foramen - Answers -appears as a round to ovoid radiolucent area between the
roots of the maxillary central incisors.
To change the magnification on a radiograph, you would increase/decrease - Answers -
Target Film Distance
Tungsten target - Answers -plate of tungsten, which serves as a focal spot and converts
bombarding electrons into x-ray photons
Lead diaphragm - Answers -Restricts size of x-ray beam
What type of extra oral x ray evaluates the patient's facial profile and soft tissue? -
Answers -Cephalomeric
Primary radiation - Answers -The most penetrating beam produced at the target of the
anode
,Secondary radiation - Answers -Less penetrating than primary radiation
Scatter radiation - Answers -Secondary radiation: commonly called scatter radiation, it is
caused by interaction of the primary beam with objects in its path
Density - Answers -The overall darkness or blackness of an image
Contrast - Answers -the difference in brightness between the light and dark areas of an
image
High contrast - Answers -many black and white areas, few shades of gray
Low contrast - Answers -many shades of gray
Genetic radiation effects - Answers -Not seen in patient, passed onto future generation
Somatic radiation effects - Answers -seen in the person irradiated (cancer, leukemia,
cataracts), not passed onto future generations
Roentgen (R) - Answers -Amount of radiation in the air
Radiation absorbed dose (Rad) - Answers -the amount of radiation energy absorbed by
a tissue
Roentgen (REM) - Answers -Biological effects
Radiosensitive - Answers -Blood cells, immature reproductive cells, young bone cells,
small lymphatic *Most sensitive
Critical organ - Answers -if damaged, diminishes the quality of a person's life (skin,
thyroid, lens of eye, bone marrow)
How far do you stand from the tube head? - Answers -6 ft
ALARA stands for? - Answers -As Low As Reasonably Achievable
Lead apron - Answers -Recommended for both intra-oral and extra-oral radiographs
Thyroid collar - Answers -Intra-oral X-rays only
Occlusal size film? - Answers -4
Least radiosensitive cells - Answers -muscle cells and nerve cells, mature cells
What film should be taken first for a patient with strong gag reflex? - Answers -Anterior
, What restricts the size and shape of the x-ray beam? - Answers -Lead diaphragm - to
size 2.75
Who would be least susceptible to radiation? - Answers -35 year old woman
Size film for occlusal on a 5 year old? - Answers -2
What is ankyloglossia? - Answers -tongue-tied
What film would the coronoid process be found? - Answers -Maxillary molar
What do you do for a shallow pallet when taking radiographs? - Answers -Increase
vertical angle (VA)
Total dose - Answers -quantity of radiation received, or the total amount of radiation
energy absorbed
Dose rate - Answers -rate at which exposure to radiation occurs and absorption takes
place
Radiolucent - Answers -Black
Radiopaque - Answers -White
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