CT REGISTRY- STUDY THIS AND YOU'LL PASS!!
(excluding anatomy) EXAM 100% SOLVED
Save
Terms in this set (589)
1. Increase dose
how do you reduce beam
2. Reduce collimation--Reduce slice thickness
hardening
3. Increase window width
At what level does the L4
abdominal aortal
bifurcate?
What is the typical scan 30-45 seconds
delay after injection of
contrast media for studies
of the liver?
What window settings window width= 140, level= 60
provide the best tissue
differentiation within the
liver?
What is the window window width=2000, window level=350
settings that provide the
best bone window for the
pelvis?
What mAs is typically used 200-300 mAs
in routine CT exams of the
abdomen?
,What is the result of the The right and left common iliac arteries
bifurcation of the
abdominal aorta?
What is the anode target 12 degrees
angle?
At what level do the C3-C4
common carotids
bifurcate into the internal
and external carotid
arteries?
The floor of the orbit is maxillary and zygomatic
formed by the __________
bones.
The lateral wall of the zygomatic and sphenoid
orbit is formed by the
___________ bones.
The medial wall of the ethmoid and lacrimal bones
orbit is formed by the
_________ bones.
mAs/pitch
how do you calculate
effective mAs?
, LEVEL: a chosen midpoint in the
grayscale
WIDTH: number of grayscale
values above and below the
level.
- The width is DIVIDED in HALF
and distributed above and
below the level.
- Anything above the window is
white
- Anything below the window is
black
define window level and The wider the window the more
window width grayscale values, the lower the
contrast!
example:
Level 100, Width 300
White = >+250
Black = <-50
Level 100, Width 200
White = >+200
Black = <0
Level 100, Width 150
White = >+175
Black = <25
(excluding anatomy) EXAM 100% SOLVED
Save
Terms in this set (589)
1. Increase dose
how do you reduce beam
2. Reduce collimation--Reduce slice thickness
hardening
3. Increase window width
At what level does the L4
abdominal aortal
bifurcate?
What is the typical scan 30-45 seconds
delay after injection of
contrast media for studies
of the liver?
What window settings window width= 140, level= 60
provide the best tissue
differentiation within the
liver?
What is the window window width=2000, window level=350
settings that provide the
best bone window for the
pelvis?
What mAs is typically used 200-300 mAs
in routine CT exams of the
abdomen?
,What is the result of the The right and left common iliac arteries
bifurcation of the
abdominal aorta?
What is the anode target 12 degrees
angle?
At what level do the C3-C4
common carotids
bifurcate into the internal
and external carotid
arteries?
The floor of the orbit is maxillary and zygomatic
formed by the __________
bones.
The lateral wall of the zygomatic and sphenoid
orbit is formed by the
___________ bones.
The medial wall of the ethmoid and lacrimal bones
orbit is formed by the
_________ bones.
mAs/pitch
how do you calculate
effective mAs?
, LEVEL: a chosen midpoint in the
grayscale
WIDTH: number of grayscale
values above and below the
level.
- The width is DIVIDED in HALF
and distributed above and
below the level.
- Anything above the window is
white
- Anything below the window is
black
define window level and The wider the window the more
window width grayscale values, the lower the
contrast!
example:
Level 100, Width 300
White = >+250
Black = <-50
Level 100, Width 200
White = >+200
Black = <0
Level 100, Width 150
White = >+175
Black = <25
