CT Registry review Questions with correct Answers 2024
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CT Registry review Questions with correct Answers 2024
Which of the following is a typical protocol for a CT study of the brain for a patient with a history of dizziness?
2.5-mm × 2.5-mm sections through the posterior fossa, 5 mm × 5 mm to vertex
Which of the following describes the scou...
which of the following is a typical protocol for a
which of the following describes the scout locali
which of the following areas of the head commonly
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CT Registry review Questions with
correct Answers 2024
Which of the following is a typical protocol for a CT study of the brain for a patient with a
history of dizziness? - answer2.5-mm × 2.5-mm sections through the posterior fossa, 5
mm × 5 mm to vertex
Which of the following describes the scout (localizer) projection used to prescribe an
axial CT acquisition of the brain? - answer lateral
Glioma is a general term used to describe a group of primary tumors. Consisting of
malignant glial cells, gliomas occur in the: - answer brain
Which of the following areas of the head commonly becomes calcified?
1. Thalamus
2. Pineal gland
3. Choroid plexus - answer Pineal gland and the choroid plexus
Following the injection of intravenous contrast media during a CT examination of the
brain, which of the following anatomic areas does not enhance? - answer Posterior horn
of lateral ventricle
Which of the following conditions or indications would not require the injection of
iodinated contrast material for proper visualization during a CT examination of the
brain? – answer S/P MVA 3 days ago; R/O subdural hematoma
Which of the following statements regarding the pituitary gland is false?
A. It is sometimes referred to as the hypophysis cerebri.
B. It is seated within the Sella turcica.
C. The infundibulum attaches it to the hypothalamus.
D. It is responsible for the production of epinephrine. - answer It is responsible for the
production of epinephrine. --The pituitary gland is responsible for the production of
several hormones, including somatotropin and prolactin. It is the adrenal glands that
play a role in the production and secretion of epinephrine (adrenaline).
Which of the following correctly describes the patient position relative to the gantry for a
CT study of the brain? - answerSupine, head first
,Cerebrospinal fluid (CSF) is produced in the: - answerchoroid plexuses.
A stereotactic unit would be used for which of the following specialized CT
examinations? - answerC. CT-guided biopsy of the brain
In which of the following cranial nerves would an acoustic neuroma be found? -
answerEighth
Which of the following types of pathologic conditions cannot be easily diagnosed from a
CT scan of the brain?
A. Astrocytoma
B. Traumatic hemorrhage
C. Cerebral infarct
D. Alzheimer's disease - answerD. Alzheimer's disease
In an effort to reduce radiation exposure to the orbits during a CT examination of the
brain, the gantry may be angled: - answerC. 15 degrees superior to the infraorbital-
meatal line (IOML).
The abnormal accumulation of cerebrospinal fluid on the ventricles of the brain is called:
- answerD. hydrocephalus.
Unless the use of iodinated contrast media is contraindicated, which of the following
pathologic conditions require(s) the administration of such media for optimal
visualization on CT examination?
1. Suspected neoplasm
2. Arteriovenous malformation (AVM)
3. Acute hemorrhage - answer1. Suspected neoplasm
2. Arteriovenous malformation (AVM)
High-resolution CT examinations of the temporal bones and internal auditory canal
should include which of the following technical parameters?
1. 5- to 7-mm section width
2. Small (less than 10 cm) targeted DFOV
3. Soft-tissue kernel - answer2. Small (less than 10 cm) targeted DFOV
Which of the following technical parameters is NOT a necessary component of a high-
resolution CT examination of the internal auditory canals (IAC)?
A. 1-mm section width
B. Targeted 10-cm DFOV
C. Sagittal MIP images
, D. Bone algorithm - answerC. Sagittal MIP images
Multiplanar reformation (MPR) images along the long axis of the optic nerve would be
best described by which of the following anatomic planes? - answerC. Oblique sagittal
Which of the following may be used to reduce metal streak artifact on coronal-plane CT
images of the orbits?
1. Retrospective reconstruction of targeted images with reduced display field of view
(DFOV)
2. Metallic artifact reduction (MAR) software to improve image quality
3. Construction of coronal multiplanar reformation (MPR) images from the acquired
axial-plane images - answer2. Metallic artifact reduction (MAR) software to improve
image quality
3. Construction of coronal multiplanar reformation (MPR) images from the acquired
axial-plane images
Coronal imaging through the paranasal sinuses is typically performed with the plane of
imaging: - answerD. perpendicular to the hard palate.
Which of the following statements accurately describes the effects of administering an
iodinated IV contrast agent during Imaging Procedures of the brain?
1. The contrast agent increases the attenuation values for normal gray matter.
2. The contrast agent improves the differentiation of subtle hemorrhage.
3. The contrast agent enhances neoplasms that have disrupted the blood-brain barrier. -
answer1. The contrast agent increases the attenuation values for normal gray matter.
3. The contrast agent enhances neoplasms that have disrupted the blood-brain barrier.
Which of the following is NOT a component of the blood supply to the brain commonly
referred to as the circle of Willis?
A. Right middle cerebral artery
B. Left posterior communicating artery
C. Anterior communicating artery
D. Left posterior cerebral artery - answerA. Right middle cerebral artery
--The circle of Willis is composed of the anterior cerebral, anterior communicating,
internal carotid, posterior cerebral, and posterior communicating arteries. The basilar
artery and middle cerebral arteries are important vessels supplying blood to the brain,
but they do not form a part of the circle of Willis.
Which of the following methods may be used to determine the appropriate injection
delay for optimal vessel enhancement during a CTA examination of the brain?
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