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CT REGISTRY IMAGING PROCEDURES-HEAD QUESTIONS AND ANSWERS WITH SOLUTIONS 2024 $15.49   Add to cart

Exam (elaborations)

CT REGISTRY IMAGING PROCEDURES-HEAD QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

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CT REGISTRY IMAGING PROCEDURES-HEAD QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

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  • August 19, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CT REGISTRY
  • CT REGISTRY
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CT REGISTRY IMAGING PROCEDURES-
HEAD QUESTIONS AND ANSWERS
WITH SOLUTIONS 2024
During CT of the head the gantry should be angled ___ - ANSWER 15 degrees



Why is a 15 degree angle of the gantry during a head CT necessary? - ANSWER Reduces orbital dose and
beam hardening



A CT scan of the head is starts from _____ to _____. Slice thickness of this portion of scan is____. -
ANSWER Base of skull to posterior fossa

Thins 2mm-5mm



The second portion of the head CT goes from _____ to _____ in a slice thickness of____. - ANSWER
Posterior fossa to vertex

5mm-10mm



The bone window for a head CT is: - ANSWER WL 400

WW 3000



Why are there thin slices selected for the first portion of a head CT? - ANSWER Thinner slices through
the petrous pyramids reduce beam hardening.



Trauma head CT should be scanned with or with out IV contrast. - ANSWER Trauma should not be given
contrast because enhancement of the brain tissue could hide subtle signs of hemorrhage.



Head CT indications for studies WITH IV contrast include: - ANSWER -arteriovenous malformation

-suspected neoplasm

-studies of the pituitary gland



Types of neoplasms found within the brain: - ANSWER -meningioma

, -schwannoma

-glioma (to include astrocytoma)



Studies of the Temporal bones or the internal auditory canal (IAC) should be scanned with these
perimeters:

Hint 4 - ANSWER -Thin slices (0.6-2mm)

-reconstructed axial and coronal images

-targeted small DFOV

-no contrast (unless suspected neoplasm or vascular abnormality)



CT scan of the orbits should be scanned according to this landmark. - ANSWER parallel to IOML



Studies of the Orbits should be scanned with these perimeters:

Hint 3 - ANSWER -Thin slices (1-3mm)

-reconstructed coronal and axial

-no contrast (unless suspected neoplasm, vascular abnormalities, inflammation, etc)



The bone window for orbits: - ANSWER bone WL 400 WW 3000



CT scan of sinuses and facial bones should be scanned according to this landmark: - ANSWER parallel to
IOML



Name the 4 sinuses: - ANSWER -maxillary

-ethmoid

-sphenoid

-frontal



Studies of the sinuses and facial bones should be scanned according to these perimeters:

Hint 4 - ANSWER -include all 4 sinuses

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