Which of the following parameter adjustments will SHORTEN can time in an MR pulse sequence? correct answersDecrease TR, Increase ETL, Decrease NEX, Enable half fourier, Increase the parallel imaging factor
All of the following artifacts except _____ occur along the phase encoding axis. correct a...
Which of the following parameter adjustments will SHORTEN can time in an MR pulse sequence? correct
answersDecrease TR, Increase ETL, Decrease NEX, Enable half fourier, Increase the parallel imaging factor
All of the following artifacts except _____ occur along the phase encoding axis. correct answersChemical
Shift
Magnetic susceptibility artifacts are more prominent with ______ sequences. correct answersGradient
Echo
A remedy for a Gibbs trunctation artifact would be.. correct answersAn increase in the number of phase
encodings
The largest ventricle in the heart is the ____. correct answersLeft Ventricle
Calculate the effective TR for a patient with a heart rate of 70 bpm correct answers857s
The height of a peak on an MR spectrum correlates to the ____ of a substance that was detected. correct
answersAmount
Contrast in Diffusion weighted imaging (DWI) depends on.... correct answersThe degree to which
molecular mobility is impaired (water restriction), The sensitivity of the sequence to Brownian motion,
the direction of water diffusion...
The final result in a perfusion study is.. correct answersA set of calculated images which indicate various
flow characteristics
The final result in a spectroscopy study is.. correct answersA spectrum of specific detected metabolites.
, The imaging technique that employs a very rapid pulse sequence while the patient is at rest or
performing a task is... correct answersFuntional MRI
If the TR in a gradient echo sequence is less than the T2 (or T2*), the resulting condition is known as:
correct answersSteady state
A gradient echo sequence in which all the remaining residual transverse magnetization is removed prior
to the next excitation pulse is known as correct answersIncoherent or spoiled
In a FSE sequence, acquired with a long TE, yielding T2 weighted images, scan time can be reduced by
correct answersUsing a longer ETL
In a FSE sequence, acquired with a short echo time (TE), yielding T1 or PD weighted images, blurring can
be reduced by correct answersUsing a shorter ETL
The structures that comprise the rotator cuff in the shoulder are correct answersSupraspinatus ,
Infraspinatus, Teres minor, and Subscapularis muscles and tendonds.
T2 weighted FLAIR sequences are typically used for the evaluation of correct answersWhite matter
diesease
Short Tau Inversion Recovery sequences are typically NOT used for the evaluation of correct
answersFluid (CSF)
When a gradient echo sequence is selected for fast, breath hold dynamic contrast-enhanced imaging of
the abdomen, _____________ is utilized. correct answersSpoiling
Gradient echo sequences requiring high signal from fluid are NOT known as correct answersIncoherent
gradient echo
Dynamic enhanced MRA sequences of the mesenteric arteries are performed using: correct
answersIncoherent gradient echo
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