Chapter 19 neurologic imaging procedures Flashcards
1
Q
slice angle is determined by
A
position of the pateints head and the angle of the gantry
2
Q
where do center from a Ct of the brain
A
supraorbital metal line also called glabellomeatal line
3
Q
why do u center at the supraorbital metal line for the brain
A
to reduce exposure to the eyes
4
Q
a disadvantage of multi detector CT systems
A
do not allow you to tilt when in helical mode
5
Q
technique often used for routine brain imaging
A
axial (step and shoot)
6
Q
because the dense bone of the skull ____ is common in the posterior fossa
A
beam - hardening artifacts
7
Q
slice thickness fro the head
A
1.25 mm
8
Q
CTA studies of the head and neck are done in the
A
axial mode
9
Q
ICH will appear ___ to normal brain tissue approx. 3 days
A
hyper dense
