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RTE 1533 Final Exam Review- Solved
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RTE 1533 Final Exam Review- Solved
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RTE 1533 Final Exam Review- SolvedA PA axial projection with a 25° caudad angle of the cranium reveals that the petrous
ridges are at the level of the superior orbital margins. What modification is required to
correct this error? - ANSWER-Increase extension of the cranium
A patient comes to radiology for a routine study of the cranium. He is unable to flex his
head and neck sufficiently to place the OML perpendicular to the IR for the AP axial
projection. What should the technologist do to compensate for this problem without
creating excessive magnification of the occipital bone? - ANSWER-Use the inferior OML
(IOML) and increase the CR angulation by 7°.
A patient comes to radiology with a history of a possible erosion of the superior orbital
fissures. Which of following projections would best demonstrate this structure? -
ANSWER-PA Axial w/ 25 to 30 degree caudal angle to OML
A patient comes to radiology with a possible bone cyst within the squamous portion of
the frontal bone. Which of the following projections would best demonstrate this region
with a minimal amount of distortion of the frontal bone? - ANSWER-PA with no CR
angulation to OML
A patient enters the ED with a possible fracture of the right zygomatic arch. Which of the
following routines would best diagnose a possible fracture of this structure? - ANSWER-
Submentovertical, oblique inferosuperior (tangential), and AP axial (Towne method)
projections
A patient enters the emergency department (ED) with a possible basilar skull fracture.
Which of the following skull projections would best demonstrate any blood present in the
sphenoid sinus? - ANSWER-Horizontal Beam Lateral
A radiograph of a lateral cranium reveals that the mentum of the mandible was cut off
from the bottom of the radiograph. A 24 ´ 30-cm (10 ´ 12-inch) IR was used, and it was
placed landscape. What must be altered if a repeat exposure is performed? - ANSWER-
None of the above; all of the critical structures were demonstrated.
A radiograph of a lateral projection of the cranium reveals that the orbital roofs (plates)
are not superimposed—one is slightly superior to the other. Which of the following
positioning errors led to this radiographic outcome? - ANSWER-Tilt
A radiograph of a parietoacanthial (Waters method) projection reveals that the petrous
ridges are superimposed over the lower 30% of the maxillary sinuses. What specific
positioning error (if any) led to this radiographic finding? - ANSWER-Insufficient
extension of skull and neck
, A radiograph of a posteroanterior (PA) axial projection (Caldwell method) of the cranium
reveals that the petrous ridges are located at the level of the lower one-third of the
orbits. The technologist performed this projection with the CR angled 15° caudad to the
orbitomeatal line (OML). How must positioning be altered if a repeat exposure is
performed? - ANSWER-None of the above; positioning was correct.
A radiograph of a submentovertex projection of the cranium reveals that the mandibular
mentum are projected into the ethmoid sinuses. What must be altered during the repeat
exposure to produce a more diagnostic radiograph? - ANSWER-Increase the extension
of the skull.
An average shaped skull with a 47-degree angle between the petrous pyramids and the
MSP is classified as: - ANSWER-Mesocephalic
How many bones makes up the facial bone region? - ANSWER-14
How many facial bones help make up the bony orbit? - ANSWER-4
How many fontanels does an infant have? - ANSWER-6
How much skull rotation (from a lateral position) is required to place the ramus parallel
to the IR for the axiolateral/axiolateral oblique projection of the mandible? - ANSWER-
None. The skull should be kept in a lateral position
How much skull rotation, from a lateral position, is recommended to best demonstrate
the body of the mandible for an axiolateral/axiolateral oblique projection? - ANSWER-
30° toward the IR
How much skull tilt and rotation are required for the oblique inferosuperior (tangential)
projection for zygomatic arches? - ANSWER-15 degrees
Part 10 is part of which bone? - ANSWER-maxilla
Part 3 is part of which bone? - ANSWER-Ethmoid
Part 6 is: - ANSWER-Superior Orbital Fissure
Part 9 is part of which bone? - ANSWER-maxilla
The _____ sinuses develop last and are not fully developed until the teenage years. -
ANSWER-Ethmoid
The "aditus" is defined as: - ANSWER-An opening between the epitympanic recess and
the mastoid air cells
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