ASMIRT - MRI Accreditation Exam 2026 |
All Questions and Correct Answers |
Graded A+ | Verified Answers | Just
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Different tissues that have signals that appear similar on an MR image are
described as:
A) hypointense
B) hyperintense
C) isointense
D) isodense ---------CORRECT ANSWER-----------------isointense
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 ---------CORRECT ANSWER-----------------precession
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 ---------CORRECT ANSWER-----------------nuclear
magnetic resonance
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 ---------CORRECT ANSWER-----------------
the transverse component will increase
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 ---------CORRECT ANSWER-----------------resonance
frequency
the introduction of gadolinium based contrast enhancement agents by intra-
venous injection can involve passing through an abnormal blood brain barrier. the
tissue compartments involved are the:
A) intravascular to interstitial
,B) extracellular to intracellular
C) hepatobiliary to renal
D) extradural to renal ---------CORRECT ANSWER-----------------intravascular to
interstitial
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% ---------CORRECT ANSWER-----------------37%
In the USA, the MRI system's magnetic field and vector that represents it is
symbolized:
A) B1
B) B2
C) B3
D) B0 ---------CORRECT ANSWER-----------------B0
The resonance frequency of any substance in a magnetic field can be calculated
by employing the
A) damadian equation
, B) larmor equation
C) faraday equation
D) lauterbur equation ---------CORRECT ANSWER-----------------Larmor equation
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 ---------CORRECT ANSWER-----------------shift in both size and direction
Which type of electromagnetic coils are designed to stimulate and detect an MR
signal?
A) gradient coils
B) radio-frequency coils
C) shim coils ---------CORRECT ANSWER-----------------radio-frequency
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
All Questions and Correct Answers |
Graded A+ | Verified Answers | Just
Released
Different tissues that have signals that appear similar on an MR image are
described as:
A) hypointense
B) hyperintense
C) isointense
D) isodense ---------CORRECT ANSWER-----------------isointense
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 ---------CORRECT ANSWER-----------------precession
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 ---------CORRECT ANSWER-----------------nuclear
magnetic resonance
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 ---------CORRECT ANSWER-----------------
the transverse component will increase
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 ---------CORRECT ANSWER-----------------resonance
frequency
the introduction of gadolinium based contrast enhancement agents by intra-
venous injection can involve passing through an abnormal blood brain barrier. the
tissue compartments involved are the:
A) intravascular to interstitial
,B) extracellular to intracellular
C) hepatobiliary to renal
D) extradural to renal ---------CORRECT ANSWER-----------------intravascular to
interstitial
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% ---------CORRECT ANSWER-----------------37%
In the USA, the MRI system's magnetic field and vector that represents it is
symbolized:
A) B1
B) B2
C) B3
D) B0 ---------CORRECT ANSWER-----------------B0
The resonance frequency of any substance in a magnetic field can be calculated
by employing the
A) damadian equation
, B) larmor equation
C) faraday equation
D) lauterbur equation ---------CORRECT ANSWER-----------------Larmor equation
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 ---------CORRECT ANSWER-----------------shift in both size and direction
Which type of electromagnetic coils are designed to stimulate and detect an MR
signal?
A) gradient coils
B) radio-frequency coils
C) shim coils ---------CORRECT ANSWER-----------------radio-frequency
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
