Cranium test
anterior clinoid processes
Sphenoid
foramen ovale
Sphenoid
sella turcica
Sphenoid
Which of the following middle ear structures is considered the most lateral?
malleus
The sutural point or area labeled e is the:
pterion
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?
tilt
The part labeled i is the:
tympanic membrane
Where is the CR centered for a lateral projection of the cranium?
2 inches superior to EAM
How much difference in degrees is there between the OML and the IOML?
7-8 degrees
Which of the following cranial bones does not articulate with the parietal bone?
All of the above articulate with the parietal bone
Multiple myeloma right
Bone tumor originating in the bone marrow
The sutural point or area labeled d is termed:
Bregma
A patient comes to radiology with severe mastoiditis. Which one of the following imaging modalities will best demonstrate possible bony destruction within the mastoid region?
CT
Which of the following imaging modalities may be used to examine a possible cranial bleed caused by trauma?
CT
Paget's disease
Conditions that begins with bony destruction followed by bony repair
Osteolytic neoplasm
Destructive lesion with irregular margins
Perpendicular plate
Ethmoid
Superior nasal conchae
Ethmoid
Which cranial bone possesses the superior nasal conchae?
Ethmoid
cribriform plate
Ethmoid
True/false. Lesions of decreased density are termed osteoblastic lesions.
False
Basal fracture
Fracture evident by sphenoid sinus effusion
linear fracture
Fracture of the skull with jagged or irregular lucent line that lies at a right angle to the axis of the bone
Glabella
Frontal
superciliary arch
Frontal
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?
Horizontal beam lateral projection
Which one of the following technical considerations is most critical for demonstrating air and/or fluid levels within the cranium?
Horizontal x-ray beam
Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne) projection with a 37° caudad CR angle?
IOML
A 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. Which of the following modifications are required to correct this error?
Increase extension of cranium
A patient comes in with a clinical history of a possible pituitary adenoma. Because this is a rural hospital, CT and MRI are not available. Which radiographic projection or position would best demonstrate signs of bony erosion of the sella turcica because of the tumor?
Lateral position
A patient comes to radiology with a clinical history of an acoustic neuroma. Which of the following imaging modalities will provide the best assessment for this tumor?
MRI
Which of the following imaging modalities provides an excellent distinction between normal and abnormal brain tissue?
MRI
Which of the following clinical indications may require a decrease in manual exposure factors?
Multiple myeloma
A radiograph of a lateral cranium reveals that the mentum was cut off from the bottom of the radiograph. A 24 × 30-cm (10 × 12-inch) IR was used, and it was placed crosswise. What must be altered if a repeat exposure is performed?
None of the above; all of the structures were demonstrated.
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° caudal to the orbitomeatal line (OML). How must positioning be altered if a repeat exposure is performed?
None of the above; positioning was correct.
Which of the following modalities best demonstrates early signs of Paget's disease of the skull?
Nuclear medicine
Foramen magnum
Occipital
Inion
Occipital
lateral condylar portions
Occipital
The radiograph shown is
PA
The radiograph shown is
PA Caldwell
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?
PA with no CR angulation to OML
Which four cranial bones articulate with the frontal bone? (Make sure you choose 4)
Right parietal, left parietal, sphenoid, and ethmoid
Which of the following positioning errors frequently results in a repeat exposure of a cranial position?
Rotation
Which of the following landmarks corresponds to the highest level of the petrous ridge?
TEA
Depressed fracture
Tangential view may help in determining extent or degree of this fracture
EAM
Temporal
petrous ridges
Temporal
The radiograph shown is
Towne's
True/false. The sphenoid bone articulates with all the other cranial bones
True
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?
Use the inferior OML and increase the CR angulation by 7°.
The cochlea is labeled:
VIII
The aditus is defined as a(n):
an opening between the epitympanic recess and the mastoid air cells.
What is the name of the joint found between the lateral condylar processes of the skull and the atlas of C1?
atlanto-occipital joint
A benign, cystic mass of the middle ear is a(n):
cholesteatoma
Which cranial bone contains the cribriform plate?
ethmoid
The part labeled x is the:
eustachian tube
Which cranial bone is labeled vi in this figure?
greater wing of sphenoid
Which cranial suture is labeled g?
lambdoidal
Which of the following sutures separates the parietal from the occipital bone?
lambdoidal
The left mastoid fontanel becomes the ____ in an adult.
left asterion
The part labeled ii is the:
malleus
Which bony structure is labeled v?
mastoid process
The mastoid air cells communicate with the:
middle ear
Which of the following bones is not part of the floor of the cranium?
occipital
Which cranial bone contains the foramen ovale?
sphenoid
Which cranial bone possesses the sella turcica?
sphenoid
pterygoid hamulus
sphenoid
Which aspect of the frontal bone is thin-walled and forms the forehead?
squamous
Which auditory ossicle attaches to the oval window?
stapes
The slight depression above each eyebrow is termed the:
supraorbital groove
Which cranial bone possesses the zygomatic process?
temporal
Zygomatic process
temporal