The energy used to form MRI images is ____________ the patient's tissues.
A. Emitted from
B. Attenuated by
C. Amplified from
D. Reflected off
Give this one a try later!
Emitted from
Which of the following best describes a FSE sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes
Give this one a try later!
, A train of spin echoes
RF energy used in MRI is classified as:
A. Low energy, nonionizing radiation
B. Low energy, ionizing radiation
C. High energy, nonionizing radiation
D. High energy, ionizing radiation
Give this one a try later!
Low energy, nonionizing radiation
A STIR sequence with a TI time of 160 ms will null signal from fat at what field
strength?
A. 0.5T
B. 0.8T
C. 1.0T
D. 1.5T
E. 3.0T
Give this one a try later!
1.5T
The B1 magnetic field is produced by a:
A. Shim coil
B. Main magnet coil
C. Gradient coil
D. Radiofrequency coil
,Give this one a try later!
Radiofrequency coil
T2 weighted FLAIR (fluid attenuated inversion recovery) sequences are typically used
for evaluation of:
A. Intra-articular cartilage
B. Adrenal adenoma
C. Fatty liver
D. Musculoskeletal chondroma
E. White matter disease
Give this one a try later!
White matter disease
The extent to which a material or tissue becomes magnetized in an external magnetic
field is called:
A. Magnetic inversion
B. Magnetic susceptibility
C. Contrast to noise ratio
D. Signal to noise ratio
E. Time tau
Give this one a try later!
Magnetic susceptibility
, The difference in chemical shift is approximately ______ parts-per-million.
A. 1.5
B. 2.5
C. 3.5
D. 4.5
E. 5.5
Give this one a try later!
3.5
Which of the following best describes an EPI sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes
Give this one a try later!
A train of gradient echoes
In a superconducting magnet, the magnetic field strength is increased by increasing
the:
A. Temperature
B. Patient body weight
C. Cryogen content
D. Turns of wire
E. Tuning to a higher frequency
Give this one a try later!
A. Emitted from
B. Attenuated by
C. Amplified from
D. Reflected off
Give this one a try later!
Emitted from
Which of the following best describes a FSE sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes
Give this one a try later!
, A train of spin echoes
RF energy used in MRI is classified as:
A. Low energy, nonionizing radiation
B. Low energy, ionizing radiation
C. High energy, nonionizing radiation
D. High energy, ionizing radiation
Give this one a try later!
Low energy, nonionizing radiation
A STIR sequence with a TI time of 160 ms will null signal from fat at what field
strength?
A. 0.5T
B. 0.8T
C. 1.0T
D. 1.5T
E. 3.0T
Give this one a try later!
1.5T
The B1 magnetic field is produced by a:
A. Shim coil
B. Main magnet coil
C. Gradient coil
D. Radiofrequency coil
,Give this one a try later!
Radiofrequency coil
T2 weighted FLAIR (fluid attenuated inversion recovery) sequences are typically used
for evaluation of:
A. Intra-articular cartilage
B. Adrenal adenoma
C. Fatty liver
D. Musculoskeletal chondroma
E. White matter disease
Give this one a try later!
White matter disease
The extent to which a material or tissue becomes magnetized in an external magnetic
field is called:
A. Magnetic inversion
B. Magnetic susceptibility
C. Contrast to noise ratio
D. Signal to noise ratio
E. Time tau
Give this one a try later!
Magnetic susceptibility
, The difference in chemical shift is approximately ______ parts-per-million.
A. 1.5
B. 2.5
C. 3.5
D. 4.5
E. 5.5
Give this one a try later!
3.5
Which of the following best describes an EPI sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes
Give this one a try later!
A train of gradient echoes
In a superconducting magnet, the magnetic field strength is increased by increasing
the:
A. Temperature
B. Patient body weight
C. Cryogen content
D. Turns of wire
E. Tuning to a higher frequency
Give this one a try later!
