ARMRIT REGISTRY REVIEW QUESTIONS WITH VERIFIED || || || || || ||
DETAILED SOLUTIONS ||
10,000 Gauss is equivalent to:
|| || || ||
1.0 Tesla
||
In the absence of a magnetic field the orientation of the spins are all:
|| || || || || || || || || || || || ||
Random
As magnetic field strength increases the number of protons that align in the parallel
|| || || || || || || || || || || || || ||
direction of the magnet: || || ||
Increases
The summation of all the magnetic moments of individual spins along the surface plane of
|| || || || || || || || || || || || || || ||
the magnetic field is referred to as the:
|| || || || || || ||
Longitudinal Magnetization Vector (LMV) || || ||
Of the 3 magnet types used in MRI, the one used most is:
|| || || || || || || || || || || ||
Superconductive
Of the 3 magnet types used in MRI which can be routinely turned on and off:
|| || || || || || || || || || || || || || ||
,Resistive
True/False: The magnetic field strength of an MRI system can be determined by looking at
|| || || || || || || || || || || || || || ||
its size:
||
False
Of the 3 magnet types in MRI which is mostly used in "open" designs:
|| || || || || || || || || || || || ||
Permanent
Of the 3 magnet types used in MRI which can yield the highest magnetic field strength:
|| || || || || || || || || || || || || || ||
Superconductive
Of the 3 magnet types in MRI which is the heaviest:
|| || || || || || || || || ||
Resistive
Of the 3 magnet types in MRI which accommodates the highest performance levels in
|| || || || || || || || || || || || || ||
image quality and speed:
|| || ||
Superconductive
Of the 3 magnet types in MRI which requires special cooling to maintain its magnetic field:
|| || || || || || || || || || || || || || ||
,Superconductive
In a superconductive magnet, electrical current flowing through the magnet experiences:
|| || || || || || || || || ||
virtually no resistance || ||
The medium used to make a conductor superconductive is called a:
|| || || || || || || || || ||
Cryogen
The strong magnetic field produced by heavy electric current passing through a conductor
|| || || || || || || || || || || || ||
is an example of:
|| || ||
Faraday's Law ||
Helium liquifies a -453 degrees Fahrenheit which is equivalent to:
|| || || || || || || || ||
4 Degrees Kelvin
|| ||
0 Degree Kelvin, the theoretical point where all molecular motion stops, is also referred to
|| || || || || || || || || || || || || || ||
as:
Absolute zero ||
The process of liquid helium explosively turning gaseous is referred to as:
|| || || || || || || || || || ||
, A Quench
||
All MR systems have a transmitting antenna surrounding the patient referred to as:
|| || || || || || || || || || || ||
The body coil || ||
The computer component that performs the mathematical reconstruction of MRI images is:
|| || || || || || || || || || ||
Array Processor ||
The mathematical reconstruction of an MRI images uses the ____________ process to
|| || || || || || || || || || || ||
create the image: || ||
Fourier Transform ||
When used properly, MRI has:
|| || || ||
No adverse biological effects
|| || ||
The amount of force a magnet exerts on an object depends on the:
|| || || || || || || || || || || ||
Amount of ferrous material on the object and the distance to the center of the magnet
|| || || || || || || || || || || || || || ||
As the distance of an object to the magnet decreases, the force exerted on the object:
|| || || || || || || || || || || || || || ||
Increases
DETAILED SOLUTIONS ||
10,000 Gauss is equivalent to:
|| || || ||
1.0 Tesla
||
In the absence of a magnetic field the orientation of the spins are all:
|| || || || || || || || || || || || ||
Random
As magnetic field strength increases the number of protons that align in the parallel
|| || || || || || || || || || || || || ||
direction of the magnet: || || ||
Increases
The summation of all the magnetic moments of individual spins along the surface plane of
|| || || || || || || || || || || || || || ||
the magnetic field is referred to as the:
|| || || || || || ||
Longitudinal Magnetization Vector (LMV) || || ||
Of the 3 magnet types used in MRI, the one used most is:
|| || || || || || || || || || || ||
Superconductive
Of the 3 magnet types used in MRI which can be routinely turned on and off:
|| || || || || || || || || || || || || || ||
,Resistive
True/False: The magnetic field strength of an MRI system can be determined by looking at
|| || || || || || || || || || || || || || ||
its size:
||
False
Of the 3 magnet types in MRI which is mostly used in "open" designs:
|| || || || || || || || || || || || ||
Permanent
Of the 3 magnet types used in MRI which can yield the highest magnetic field strength:
|| || || || || || || || || || || || || || ||
Superconductive
Of the 3 magnet types in MRI which is the heaviest:
|| || || || || || || || || ||
Resistive
Of the 3 magnet types in MRI which accommodates the highest performance levels in
|| || || || || || || || || || || || || ||
image quality and speed:
|| || ||
Superconductive
Of the 3 magnet types in MRI which requires special cooling to maintain its magnetic field:
|| || || || || || || || || || || || || || ||
,Superconductive
In a superconductive magnet, electrical current flowing through the magnet experiences:
|| || || || || || || || || ||
virtually no resistance || ||
The medium used to make a conductor superconductive is called a:
|| || || || || || || || || ||
Cryogen
The strong magnetic field produced by heavy electric current passing through a conductor
|| || || || || || || || || || || || ||
is an example of:
|| || ||
Faraday's Law ||
Helium liquifies a -453 degrees Fahrenheit which is equivalent to:
|| || || || || || || || ||
4 Degrees Kelvin
|| ||
0 Degree Kelvin, the theoretical point where all molecular motion stops, is also referred to
|| || || || || || || || || || || || || || ||
as:
Absolute zero ||
The process of liquid helium explosively turning gaseous is referred to as:
|| || || || || || || || || || ||
, A Quench
||
All MR systems have a transmitting antenna surrounding the patient referred to as:
|| || || || || || || || || || || ||
The body coil || ||
The computer component that performs the mathematical reconstruction of MRI images is:
|| || || || || || || || || || ||
Array Processor ||
The mathematical reconstruction of an MRI images uses the ____________ process to
|| || || || || || || || || || || ||
create the image: || ||
Fourier Transform ||
When used properly, MRI has:
|| || || ||
No adverse biological effects
|| || ||
The amount of force a magnet exerts on an object depends on the:
|| || || || || || || || || || || ||
Amount of ferrous material on the object and the distance to the center of the magnet
|| || || || || || || || || || || || || || ||
As the distance of an object to the magnet decreases, the force exerted on the object:
|| || || || || || || || || || || || || || ||
Increases
