CT Registry review questions with accurate detailed
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solutions
Which of the following is a typical protocol for a CT study of the brain for a patient with a
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history of dizziness? - correct answer✔✔2.5-mm × 2.5-mm sections through the posterior
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fossa, 5 mm × 5 mm to vertex
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Which of the following describes the scout (localizer) projection used to prescribe an axial
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CT acquisition of the brain? - correct answer✔✔lateral
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Glioma is a general term used to describe a group of primary tumors. Consisting of
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malignant glial cells, gliomas occur in the: - correct answer✔✔brain
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Which of the following areas of the head commonly becomes calcified?
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1. Thalamus
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2. Pineal gland
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3. Choroid plexus - correct answer✔✔Pineal gland and the choroid plexus
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Following the injection of intravenous contrast media during a CT examination of the brain,
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which of the following anatomic areas does not enhance? - correct answer✔✔Posterior
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horn of lateral ventricle
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Which of the following conditions or indications would not require the injection of
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iodinated contrast material for proper visualization during a CT examination of the brain? -
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correct answer✔✔S/P MVA 3 days ago; R/O subdural hematoma
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Which of the following statements regarding the pituitary gland is false?
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,A. It is sometimes referred to as the hypophysis cerebri.
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B. It is seated within the sella turcica.
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C. The infundibulum attaches it to the hypothalamus.
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D. It is responsible for the production of epinephrine. - correct answer✔✔It is responsible
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for the production of epinephrine. --The pituitary gland is responsible for the production of
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several hormones, including somatotropin and prolactin. It is the adrenal glands that play a
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role in the production and secretion of epinephrine (adrenaline).
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Which of the following correctly describes the patient position relative to the gantry for a
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CT study of the brain? - correct answer✔✔Supine, head first
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Cerebrospinal fluid (CSF) is produced in the: - correct answer✔✔choroid plexuses.
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A stereotactic unit would be used for which of the following specialized CT examinations? -
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correct answer✔✔C. CT-guided biopsy of the brain
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In which of the following cranial nerves would an acoustic neuroma be found? - correct
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answer✔✔Eighth
Which of the following types of pathologic conditions cannot be easily diagnosed from a CT
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scan of the brain? || || ||
A. Astrocytoma
||
B. Traumatic hemorrhage
|| ||
,C. Cerebral infarct
|| ||
D. Alzheimer's disease - correct answer✔✔D. Alzheimer's disease
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In an effort to reduce radiation exposure to the orbits during a CT examination of the brain,
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the gantry may be angled: - correct answer✔✔C. 15 degrees superior to the infraorbital-
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meatal line (IOML). || ||
The abnormal accumulation of cerebrospinal fluid on the ventricles of the brain is called: -
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correct answer✔✔D. hydrocephalus. || ||
Unless the use of iodinated contrast media is contraindicated, which of the following
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pathologic conditions require(s) the administration of such media for optimal visualization
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on CT examination?
|| || ||
1. Suspected neoplasm
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2. Arteriovenous malformation (AVM)
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3. Acute hemorrhage - correct answer✔✔1. Suspected neoplasm
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2. Arteriovenous malformation (AVM)
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High-resolution CT examinations of the temporal bones and internal auditory canal should || || || || || || || || || || || ||
include which of the following technical parameters?
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1. 5- to 7-mm section width
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2. Small (less than 10 cm) targeted DFOV
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3. Soft-tissue kernel - correct answer✔✔2. Small (less than 10 cm) targeted DFOV
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Which of the following technical parameters is NOT a necessary component of a high-
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resolution CT examination of the internal auditory canals (IAC)? || || || || || || || ||
A. 1-mm section width
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, B. Targeted 10-cm DFOV
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C. Sagittal MIP images
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D. Bone algorithm - correct answer✔✔C. Sagittal MIP images
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Multiplanar reformation (MPR) images along the long axis of the optic nerve would be best
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described by which of the following anatomic planes? - correct answer✔✔C. Oblique
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sagittal
Which of the following may be used to reduce metal streak artifact on coronal-plane CT
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images of the orbits? || || || ||
1. Retrospective reconstruction of targeted images with reduced display field of view
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(DFOV) ||
2. Metallic artifact reduction (MAR) software to improve image quality
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3. Construction of coronal multiplanar reformation (MPR) images from the acquired axial-
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plane images - correct answer✔✔2. Metallic artifact reduction (MAR) software to improve
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image quality || ||
3. Construction of coronal multiplanar reformation (MPR) images from the acquired axial-
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plane images
||
Coronal imaging through the paranasal sinuses is typically performed with the plane of
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imaging: - correct answer✔✔D. perpendicular to the hard palate.
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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.
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solutions
Which of the following is a typical protocol for a CT study of the brain for a patient with a
|| || || || || || || || || || || || || || || || || || || ||
history of dizziness? - correct answer✔✔2.5-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? - correct answer✔✔lateral
|| || || || || || ||
Glioma is a general term used to describe a group of primary tumors. Consisting of
|| || || || || || || || || || || || || || ||
malignant glial cells, gliomas occur in the: - correct answer✔✔brain
|| || || || || || || || ||
Which of the following areas of the head commonly becomes calcified?
|| || || || || || || || || ||
1. Thalamus
||
2. Pineal gland
|| ||
3. Choroid plexus - correct 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? - correct 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? -
|| || || || || || || || || || || || || ||
correct 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. - correct 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? - correct answer✔✔Supine, head first
|| || || || || || || || ||
Cerebrospinal fluid (CSF) is produced in the: - correct answer✔✔choroid plexuses.
|| || || || || || || || || ||
A stereotactic unit would be used for which of the following specialized CT examinations? -
|| || || || || || || || || || || || || || ||
correct answer✔✔C. CT-guided biopsy of the brain
|| || || || || ||
In which of the following cranial nerves would an acoustic neuroma be found? - correct
|| || || || || || || || || || || || || || ||
answer✔✔Eighth
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 - correct answer✔✔D. 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: - correct answer✔✔C. 15 degrees superior to the infraorbital-
|| || || || || || || || || || || || ||
meatal line (IOML). || ||
The abnormal accumulation of cerebrospinal fluid on the ventricles of the brain is called: -
|| || || || || || || || || || || || || || ||
correct answer✔✔D. 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 - correct answer✔✔1. 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 - correct answer✔✔2. 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 - correct answer✔✔C. 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? - correct answer✔✔C. 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 - correct answer✔✔2. 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: - correct answer✔✔D. 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.
|| || || || || || || || || || ||
