CT Registry Practice Test Questions with 100%
Verified Correct Answers
Which onw of the following statements regarding the petrous pyramids is FALSE?
A. it contains the middle and inner ear structures
B. it extends medially beyond the sphenoid bones
C. its end forms the antrum of the eustachian tubule
D. ita upper surface forms part of the floor of the middle cranial fossa - Correct Answer C. its end
forms the antrum of the eustachian tubule
CTA may require LOCM injection rates as high as ________ mL/sec.
A. 2
B. 3
C. 5
D. 7.5 - Correct Answer C. 5
The gantry angle for a sinus cavity should be:
A. parallel to the roof of the hard palate
B. sagittal to the roof of the hard palate
C. parallel to the floor of the orbit
D. parallel to the roof of the orbit - Correct Answer A. parallel to thw roof of the hard palate
Slip ring technology made spural CT a possibility by:
A. improved insulting and cooling systems, allowing CT scanners to run at a higher speed and
tempurature
B. decreasing the amount of radiation per slice
C. allowing the gantry to stop rotating and reverse course while maintaining accurate beam direction
D. allowing the tube and detectors to rotate continuously - Correct Answer D. allowing the tube and
detectors to rotate continuously
Which of thw following is NOT a factot affecting choice of a particular contrast agent?
A. an institutional contract with the manufacturer
B. cost
,C. the use of drip infusion vs. power injector
D. radiologist preference - Correct Answer B. cost
The appropriate length of scan delay in seconds following contrast injectiom for orbital scan is:
A. 10 sec
B. 30 sec
C. 60 sec
D. 120 sec - Correct Answer C. 60 sec
What are the most appropriate filming parameters/formats for the subdural area of the brain?
A. 200/150
B. 250/50
C. 83/35
D. 2000/150 - Correct Answer B. 250/50
The major change in CT technology seen in 4th generation scanners was:
A. the use of up to 2000 detectora in a fixed ring
B. the introduction of slip ring technology
C. the use of nutating rings
D. translation-rotation - Correct Answer A. the use of up to 2000 detectors in a fixed ring
CT plays a limited role in evaluation of the distal esophagus because:
A. the tissue at the gastroesophageal junction is covered by a thick mucous lining that absorbs
barium
B. the surrounding tissues are heavily vascularized, making it difficult to distinguish between the
esophagus and the tissues
C. this area of the esopagus is difficult to distend with oral contrast agents
D. oral contrast agents cause a high degree of gastroesophageal reflyx, making the area difficult to
clear of residual stomach contents - Correct Answer C. this area of the esopagus is difficult to distend
with oral contrast agents
The onset of most serious adverse reactions to contrast media occurs _________ post
administration.
, A. within 5 minutes
B. within 15 minutes
C. within 30 minutes
D. after 1 hour - Correct Answer A. within 5 minutes
The field of view for a craniofacial scan should include the:
A. face only
B. entire skull and face
C. orbital and nasal bones only
D. nasal and mandibular bones only - Correct Answer B. entire skull and face
Which of the following statements is FALSE regarding the maxillary sinuses?
A. they are the largest sinus cavities
B. they lie above the roots of the upper teeth
C. they drain through the infundibulum
D. they lie lateral to but not within the maxillary bones - Correct Answer D. they lie lateral to but not
within the maxillary bones
Methods for reducing streak artifacts in patients undergoing routine CT include all of the following
except:
A. raising both arms above the head
B. crossing both arms across the chest
C. raising one arm above the head
D. increasing the exposure of the scan - Correct Answer B. crossing both arms across the chest
Factors to consider in choosing non-ionic, lower osmolality agent over an ionic, higher-osmolality
agent include all of the following except a history of:
A. asthma
B. pregnancy
C. adverse reactions to contrast media
D. cardiac dysfunction - Correct Answer B. pregnancy
Verified Correct Answers
Which onw of the following statements regarding the petrous pyramids is FALSE?
A. it contains the middle and inner ear structures
B. it extends medially beyond the sphenoid bones
C. its end forms the antrum of the eustachian tubule
D. ita upper surface forms part of the floor of the middle cranial fossa - Correct Answer C. its end
forms the antrum of the eustachian tubule
CTA may require LOCM injection rates as high as ________ mL/sec.
A. 2
B. 3
C. 5
D. 7.5 - Correct Answer C. 5
The gantry angle for a sinus cavity should be:
A. parallel to the roof of the hard palate
B. sagittal to the roof of the hard palate
C. parallel to the floor of the orbit
D. parallel to the roof of the orbit - Correct Answer A. parallel to thw roof of the hard palate
Slip ring technology made spural CT a possibility by:
A. improved insulting and cooling systems, allowing CT scanners to run at a higher speed and
tempurature
B. decreasing the amount of radiation per slice
C. allowing the gantry to stop rotating and reverse course while maintaining accurate beam direction
D. allowing the tube and detectors to rotate continuously - Correct Answer D. allowing the tube and
detectors to rotate continuously
Which of thw following is NOT a factot affecting choice of a particular contrast agent?
A. an institutional contract with the manufacturer
B. cost
,C. the use of drip infusion vs. power injector
D. radiologist preference - Correct Answer B. cost
The appropriate length of scan delay in seconds following contrast injectiom for orbital scan is:
A. 10 sec
B. 30 sec
C. 60 sec
D. 120 sec - Correct Answer C. 60 sec
What are the most appropriate filming parameters/formats for the subdural area of the brain?
A. 200/150
B. 250/50
C. 83/35
D. 2000/150 - Correct Answer B. 250/50
The major change in CT technology seen in 4th generation scanners was:
A. the use of up to 2000 detectora in a fixed ring
B. the introduction of slip ring technology
C. the use of nutating rings
D. translation-rotation - Correct Answer A. the use of up to 2000 detectors in a fixed ring
CT plays a limited role in evaluation of the distal esophagus because:
A. the tissue at the gastroesophageal junction is covered by a thick mucous lining that absorbs
barium
B. the surrounding tissues are heavily vascularized, making it difficult to distinguish between the
esophagus and the tissues
C. this area of the esopagus is difficult to distend with oral contrast agents
D. oral contrast agents cause a high degree of gastroesophageal reflyx, making the area difficult to
clear of residual stomach contents - Correct Answer C. this area of the esopagus is difficult to distend
with oral contrast agents
The onset of most serious adverse reactions to contrast media occurs _________ post
administration.
, A. within 5 minutes
B. within 15 minutes
C. within 30 minutes
D. after 1 hour - Correct Answer A. within 5 minutes
The field of view for a craniofacial scan should include the:
A. face only
B. entire skull and face
C. orbital and nasal bones only
D. nasal and mandibular bones only - Correct Answer B. entire skull and face
Which of the following statements is FALSE regarding the maxillary sinuses?
A. they are the largest sinus cavities
B. they lie above the roots of the upper teeth
C. they drain through the infundibulum
D. they lie lateral to but not within the maxillary bones - Correct Answer D. they lie lateral to but not
within the maxillary bones
Methods for reducing streak artifacts in patients undergoing routine CT include all of the following
except:
A. raising both arms above the head
B. crossing both arms across the chest
C. raising one arm above the head
D. increasing the exposure of the scan - Correct Answer B. crossing both arms across the chest
Factors to consider in choosing non-ionic, lower osmolality agent over an ionic, higher-osmolality
agent include all of the following except a history of:
A. asthma
B. pregnancy
C. adverse reactions to contrast media
D. cardiac dysfunction - Correct Answer B. pregnancy
