ARMRIT Practice test questions with precise detailed solutions|| || || || || || ||
Magnetism can be defined as the ability of certain substances to attract: - correct
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answer✔✔Iron, Cobalt, Nickel || ||
The components of the Gyro-magnetic ratio are: - correct answer✔✔Magnetic moment to
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angular momentum ||
Which type of electromagnetic coils produce smaller magnetic field which allow spatial
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localization to be performed? - correct answer✔✔Gradient coils
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Which type of MRI magnet requires cryogen to cool magnetic coils to 4 degrees Kelvin? -
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correct answer✔✔Superconductive ||
T2 is the measurement of time for the transverse component of the net magnetization
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vector to decrease what percentage of its maximum value after the application of a 90
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degree radio frequency pulse: - correct answer✔✔37%
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Which cryogenic material can produce temperature as low as 4 degrees Kelvin? - correct
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answer✔✔Liquid Helium ||
The T1 process is also known as - correct answer✔✔Spin-Lattice
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a 90 degree radio-frequency pulse will alter the net magnetization vector. Another effect is: -
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correct answer✔✔The hydrogen protons will have phase coherence.
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Which type of MRI magnet requires no electricity to maintain its magnetic field and can
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weigh from 18,000 lb. to 200,000 lb.? - correct answer✔✔Permanent
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Magnetism can be defined as the ability of certain substances to attract: - correct
|| || || || || || || || || || || || || ||
answer✔✔Iron, Cobalt, Nickel || ||
The components of the Gyro-magnetic ratio are: - correct answer✔✔Magnetic moment to
|| || || || || || || || || || || ||
angular momentum ||
Which type of electromagnetic coils produce smaller magnetic field which allow spatial
|| || || || || || || || || || || ||
localization to be performed? - correct answer✔✔Gradient coils
|| || || || || || ||
Which type of MRI magnet requires cryogen to cool magnetic coils to 4 degrees Kelvin? -
|| || || || || || || || || || || || || || || ||
correct answer✔✔Superconductive ||
T2 is the measurement of time for the transverse component of the net magnetization
|| || || || || || || || || || || || || ||
vector to decrease what percentage of its maximum value after the application of a 90
|| || || || || || || || || || || || || || ||
degree radio frequency pulse: - correct answer✔✔37%
|| || || || || ||
Which cryogenic material can produce temperature as low as 4 degrees Kelvin? - correct
|| || || || || || || || || || || || || ||
answer✔✔Liquid Helium ||
The T1 process is also known as - correct answer✔✔Spin-Lattice
|| || || || || || || || ||
a 90 degree radio-frequency pulse will alter the net magnetization vector. Another effect is: -
|| || || || || || || || || || || || || ||
correct answer✔✔The hydrogen protons will have phase coherence.
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Which type of MRI magnet requires no electricity to maintain its magnetic field and can
|| || || || || || || || || || || || || || ||
weigh from 18,000 lb. to 200,000 lb.? - correct answer✔✔Permanent
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