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Monica Test #1
Specials
64
Environmental Studies
Undergraduate 1
09/15/2008

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Cards

Term
The formula for heat units is:
Definition
HU= kVP x mA x t x c
Term
The grid ratio for single plane is:
Definition
8:1
Term
The grid ratio for biplane is:
Definition
12:1
Term
The program must be set on ____ if it is not going to be used.
Definition
zero
Term
This type of method is used to occlude a vessel:
Definition
embolization
Term
With film in angiography, this type of equipment is required during the exposure:
Definition
intensifying screens
Term
The most important consideration of biplane is:
Definition
control of scatter
Term
The mode of action for automatic injectors is:
Definition
electro-mechanical
Term
Steep target angles will affect:
Definition
detail
Term
This will help reduce viscosity, maintain body temperature, & chemical activity:
Definition
heating devices on pressure injectors
Term
Positive contrast agents are:
Definition
radiopaque with a high atomic number
Term
Side holes on a catheter are positioned how?
Definition
asymmetrically
Term
The number system used for catheters is:
Definition
inside diameter, outside diameter, length
Term
3 French =
Definition
1 mm
Term
Something that closes an opening is:
Definition
an obturator
Term
This will operate the film changer, how many films, and how long each phase is.
Definition
A program selector
Term
When the contrast is injected, it should be synchronized with this ECG wave.
Definition
R wave
Term
Double barrel means:
Definition
two separate syringes that turn 180 degrees
Term
Biphasic means:
Definition
Two separate injection flow rates in one procedure
Term
Automatic injector must do this.
Definition
point downward to avoid air bubbles
Term
Catheter holes are important because:
Definition
they help avoid "whip"
Term
Catheter holes are important because:
Definition
they increase delivery rate by 10-20%
Term
Catheter holes are important because:
Definition
they add stability to the tip
Term
Negative contrast include:
Definition
carbon dioxide
Term
Guide wires must...
Definition
be a minimum of 10 cm longer than the catheter
Term
Pulsed digital fluoroscopy is similar to:
Definition
conventional serial radiography
Term
Continuous digital radiography is similar to:
Definition
cineradiography
Term
Temporal subtraction is often called:
Definition
the mask
Term
Problems often occur on rapid film changers when opening and closing the intensifying screen causing:
Definition
too much air and this distortion
Term
A name given to something by the person who first discovered it is:
Definition
an eponym
Term
This type of subtraction is best to reduce motion artifacts:
Definition
energy
Term
This type of subtraction is most commonly used:
Definition
Temporal
Term
This type of subtraction is best able to switch kVp and filtration during exposures:
Definition
energy
Term
Magnification will:
Definition
only enlarge an image
Term
Primary lead barriers are required for:
Definition
bucky walls and floors
Term
This is the amount of lead required for a primary wall:
Definition
1/16 in of lead
Term
A rotating anode better distributes this:
Definition
heat
Term
Special procedure anode tube angles are best at
Definition
10 degree angle
Term
This factor is used for single phase generators:
Definition
one
Term
This factor is used for 3 phase/ 6 pulse generators:
Definition
1.35
Term
This factor is used for 3 phase/ 12 generators:
Definition
1.41
Term
This factor is used for high frequency generators:
Definition
1.45
Term
The old "roll film" could not utilize:
Definition
the last few feet of film
Term
The state of being "sticky" in contrast medias is referred to as:
Definition
viscosity
Term
Anion is the _______ portion os contrasts.
Definition
negative
Term
Atomic # of lead
Definition
82
Term
Atomic # of barium
Definition
56
Term
Atomic # for iodine
Definition
53
Term
Atomic # for fat
Definition
6.3
Term
Atomic # for aluminum
Definition
13.0
Term
Atomic # for air
Definition
7.6
Term
Atomic # for muscle
Definition
7.4
Term
Atomic # for nitrogen
Definition
7.0
Term
Atomic # for bone
Definition
13.8
Term
By coating a guide wire with this, it will be easier to insert:
Definition
heparin
Term
Torque on a catheter is:
Definition
a twisting or turning of the catheter
Term
To be able to see various shades of gray, it is called:
Definition
windowing
Term
Uniform tissue density is called:
Definition
linear
Term
If data is proportional to the signal strength, it is called:
Definition
logarithmic
Term
A digital process that converts the image is called:
Definition
gray scaling
Term
Geographic data assigned to an array in two dimensions is:
Definition
a raster line
Term
This is a natural enzyme that can dissolve clots:
Definition
urokinase
Term
An antagonist of a drug:
Definition
blocks that action of another drug
Term
Most iodide contrasts have:
Definition
benzene
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