ARMRIT
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1. Different tissues that have signals that appear similar on an MR image are
described as:
A) hypointense
B) hyperintense
C) isointense
D) isodense: isointense
2. in a large main magnetic field such as those employed in MRI, the motion of
a hydrogen proton has been described as wobbling like a spinning top. this
motion is called
A) precession
B) resonance
C) frequency
D) angular momentum: precession
3. magnetic resonance imaging is derived from the process known as:
A) magnetic resonance angiography
B) magnetic relaxation imaging
C) nuclear magnetic resonance
D) nuclear resonance imaging: nuclear magnetic resonance
4. Once the nmv has moved away from equilibrium, the following will occur
A) the longitudinal component will increase
B) the transverse component will decrease
C) the longitudinal component will stay the same
D) the transverse component will increase: the transverse component will increase
5. In MR, substances respond to a specific radio frequency which is known as:
A) magnetic frequency
B) radio frequency
C) gyro-magnetic frequency
D) resonance frequency: resonance frequency
6. the introduction of gadolinium based contrast enhancement agents by in-
tra-venous injection can involve passing through an abnormal blood brain
barrier. the tissue compartments involved are the:
A) intravascular to interstitial
, ARMRIT
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B) extracellular to intracellular
C) hepatobiliary to renal
D) extradural to renal: intravascular to interstitial
7. t2 is the measurement of time fot the transverse component of the NMV to
decrease what percentage of its maximum value after the application of a 90
degree radio-frequency pulse
A) 33%
B) 63%
C) 37%
D) 67%: 37%
8. in the USA, the MRI system's magnetic field and vector that represents it is
symbolized:
A) B1
B) B2
C) B3
D) B0: B0
9. The resonance frequency of any substance in a magnetic field can be calcu-
lated by employing the
A) damadian equation
B) larmor equation
C) faraday equation
D) lauterbur equation: Larmor equation
10. in a pulse sequence, transmitting an initial 90 degree radio-frequency pulse
will cause the NMV to:
A) remain at equilibrium
B) shift in both size and direction
C) move to antiparallel
D) rephase: shift in both size and direction
11. Which type of electromagnetic coils are designed to stimulate and detect an
MR signal?
A) gradient coils
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B) radio-frequency coils
C) shim coils: radio-frequency
12. tissues that are less efficient at spin-spin interactions because they contain
more free water, such as CSF, should have
A) High T2 values and produce hypointense signals
B) HIgh T2 values and produce hyperintense signals
C) low T2 values and produce hypointnese signals
D) low T2 values and produce hyperintense signal: High T2 values and produce hyperintense
signals
13. magnetism can be defined as the ability of certain substances to attract:
A) Copper, aluminum, tin
B) Iron, cobalt, nickel
C) Bronze, niobium, titanium
D) Neodymium, niobium-titanium, lodestone: Iron, cobalt, nickel
14. the purpose of magnetic resonance angiography is to image the:
A) stationary soft tissue
B) blood flow
C) vessel lumen
D) only abnormal vessels: blood flow
15. the strength of very large magnetic fields like those employed in MRI sys-
tems, the SI unit most commonly used is:
A) Tesla
B) Gauss
C) Kilogauss
D) militesla: Tesla
16. the larmor frequency of hydrogen protons in a 1.5 tesla magnetic field is:
A) 6.4 MHZ/Tesla
B) 12.8 MHz/Tesla
C) 25.5 MHz/tesla
D) 63.9 MHz/tesla: 63.9 MHz/Tesla
17. In MR imaging, for chemical substance to be affected by the main magnetic
field and the radio-wave it must contain an:
, ARMRIT
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A) Odd number of electrons
B) Odd number of total protons and neutrons
C) Even number of total electrons and neutrons
D) even number of protons: Odd number of total protons and neutrons
18. A 1.5T magnetic field is equal to:
A) 150 gauss
B) 1500 gauss
C) 15,000 gauss
D) 150,000 gauss: 15,000 gauss
19. the components of the gyromagnetic ratio are:
A) stimulation to relaxation
B) protons to electrons
C) magnetic moment to angular momentum
D) main magnetic field to radio-frequency signal: magnetic moment to angular momentum
20. fast transition phenomenon and entry phenomenon are theories that ex-
plain which of the following characterisitics:
A) T1 effects
B) T2 effects
C) hydrogen concentration
D) veolcity effects: Velocity effects
21. the effects of main magnetic field inhomogeneities on the FID signal are
corrected for in the spin echo sequence by applying a second radio frequency
pulse. the flip angle of this radio frequency pulse is:
A) 45 degrees
B) 60 degrees
C) 90 degrees
D) 180 degrees: 180 degrees
22. of the following statements, which describes part of the basic MR imaging
process:
A) a patient is placed isocenter to ionizing radiation
B) the patient is exposed to ionizing radiation
C) the generated image contains hypersense and hypodense areas
Study online at https://quizlet.com/_82o3dz
1. Different tissues that have signals that appear similar on an MR image are
described as:
A) hypointense
B) hyperintense
C) isointense
D) isodense: isointense
2. in a large main magnetic field such as those employed in MRI, the motion of
a hydrogen proton has been described as wobbling like a spinning top. this
motion is called
A) precession
B) resonance
C) frequency
D) angular momentum: precession
3. magnetic resonance imaging is derived from the process known as:
A) magnetic resonance angiography
B) magnetic relaxation imaging
C) nuclear magnetic resonance
D) nuclear resonance imaging: nuclear magnetic resonance
4. Once the nmv has moved away from equilibrium, the following will occur
A) the longitudinal component will increase
B) the transverse component will decrease
C) the longitudinal component will stay the same
D) the transverse component will increase: the transverse component will increase
5. In MR, substances respond to a specific radio frequency which is known as:
A) magnetic frequency
B) radio frequency
C) gyro-magnetic frequency
D) resonance frequency: resonance frequency
6. the introduction of gadolinium based contrast enhancement agents by in-
tra-venous injection can involve passing through an abnormal blood brain
barrier. the tissue compartments involved are the:
A) intravascular to interstitial
, ARMRIT
Study online at https://quizlet.com/_82o3dz
B) extracellular to intracellular
C) hepatobiliary to renal
D) extradural to renal: intravascular to interstitial
7. t2 is the measurement of time fot the transverse component of the NMV to
decrease what percentage of its maximum value after the application of a 90
degree radio-frequency pulse
A) 33%
B) 63%
C) 37%
D) 67%: 37%
8. in the USA, the MRI system's magnetic field and vector that represents it is
symbolized:
A) B1
B) B2
C) B3
D) B0: B0
9. The resonance frequency of any substance in a magnetic field can be calcu-
lated by employing the
A) damadian equation
B) larmor equation
C) faraday equation
D) lauterbur equation: Larmor equation
10. in a pulse sequence, transmitting an initial 90 degree radio-frequency pulse
will cause the NMV to:
A) remain at equilibrium
B) shift in both size and direction
C) move to antiparallel
D) rephase: shift in both size and direction
11. Which type of electromagnetic coils are designed to stimulate and detect an
MR signal?
A) gradient coils
, ARMRIT
Study online at https://quizlet.com/_82o3dz
B) radio-frequency coils
C) shim coils: radio-frequency
12. tissues that are less efficient at spin-spin interactions because they contain
more free water, such as CSF, should have
A) High T2 values and produce hypointense signals
B) HIgh T2 values and produce hyperintense signals
C) low T2 values and produce hypointnese signals
D) low T2 values and produce hyperintense signal: High T2 values and produce hyperintense
signals
13. magnetism can be defined as the ability of certain substances to attract:
A) Copper, aluminum, tin
B) Iron, cobalt, nickel
C) Bronze, niobium, titanium
D) Neodymium, niobium-titanium, lodestone: Iron, cobalt, nickel
14. the purpose of magnetic resonance angiography is to image the:
A) stationary soft tissue
B) blood flow
C) vessel lumen
D) only abnormal vessels: blood flow
15. the strength of very large magnetic fields like those employed in MRI sys-
tems, the SI unit most commonly used is:
A) Tesla
B) Gauss
C) Kilogauss
D) militesla: Tesla
16. the larmor frequency of hydrogen protons in a 1.5 tesla magnetic field is:
A) 6.4 MHZ/Tesla
B) 12.8 MHz/Tesla
C) 25.5 MHz/tesla
D) 63.9 MHz/tesla: 63.9 MHz/Tesla
17. In MR imaging, for chemical substance to be affected by the main magnetic
field and the radio-wave it must contain an:
, ARMRIT
Study online at https://quizlet.com/_82o3dz
A) Odd number of electrons
B) Odd number of total protons and neutrons
C) Even number of total electrons and neutrons
D) even number of protons: Odd number of total protons and neutrons
18. A 1.5T magnetic field is equal to:
A) 150 gauss
B) 1500 gauss
C) 15,000 gauss
D) 150,000 gauss: 15,000 gauss
19. the components of the gyromagnetic ratio are:
A) stimulation to relaxation
B) protons to electrons
C) magnetic moment to angular momentum
D) main magnetic field to radio-frequency signal: magnetic moment to angular momentum
20. fast transition phenomenon and entry phenomenon are theories that ex-
plain which of the following characterisitics:
A) T1 effects
B) T2 effects
C) hydrogen concentration
D) veolcity effects: Velocity effects
21. the effects of main magnetic field inhomogeneities on the FID signal are
corrected for in the spin echo sequence by applying a second radio frequency
pulse. the flip angle of this radio frequency pulse is:
A) 45 degrees
B) 60 degrees
C) 90 degrees
D) 180 degrees: 180 degrees
22. of the following statements, which describes part of the basic MR imaging
process:
A) a patient is placed isocenter to ionizing radiation
B) the patient is exposed to ionizing radiation
C) the generated image contains hypersense and hypodense areas
