SINUSES COMP
OML - correct answer orbitomeatal line
MML - correct answer mentomeatal line
IOML - correct answer infraorbitomeatal line
SOM - correct answer supraorbital margin
AML - correct answer Acanthiomeatal line
GML - correct answer glabellomeatal line
LML - correct answer lips-meatal line
EAM - correct answer External auditory meatus
Angle differences between IOML and OML? - correct answer 7-8 degrees
What forms the nasion? - correct answer Junction of two nasal bones and the
frontal bone
What forms the acanthion? - correct answer Middle junction of the upper lip and
nasal septum
At what age do sinuses develop? - correct answer Maxillary:birth
sphenoid/frontal:6-7 years
, Ethmoid:last to form
all should be developed in teens
Rotation on lateral view? - correct answer anterior/posterior separation of bilateral
structures such as sphenoid wings and mandibular rami and distortion of sella
Tilt on lateral? - correct answer superior/inferior separation of bilateral structures
such as orbital roofs.
Rotation on caldwell/waters? - correct answer unequal distance from lateral border
of orbits to lateral border of skull.
Excessive Chin tuck on caldwell? - correct answer petrous ridges above lower 1/3 or
out of orbits correct by lowering chin.
insufficient chin tuck on caldwell? - correct answer petrous ridges below lower 1/3
or out of orbit correct by raising chin.
Excessive chin elevation on waters? - correct answer maxillary sinuses
superimposed over posterior molars and alveolar process.
Insufficient chin elevation on waters? - correct answer petrous ridges superior to
posterior maxillary alveolar process, superimposing maxillary sinuses
How to avoid quantum mottle? - correct answer increase mAs
Patient cannot be erect - correct answer x-table lateral
Difference between frontal and maxillary sinuses - correct answer -maxillary are
always paired and fairly symmetrical
-frontals are rarely symmetrical and only sometimes separated in two
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