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missed questions on MRI Quiz Questions With Complete Solutions
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missed questions on MRI Quiz Questions With Complete Solutions
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missed questions on MRI Quiz Questions With CompleteSolutions
________ are reconstructed from diffusion weighted images
with multiple b-values, and corresponds to the spatially
distributed diffusion coefficients of the target tissues Correct
Answer ADC images
________ is a term describing the containment of Correct
Answer active shielding
_________ gradient- magnetic field Correct Answer readout
_________ is defined as the removing or killing of all
microorganisms completely Correct Answer surgical asepsis
_________ is when only half the views of k-space are filled in
the frequency axis Correct Answer partial or fractional echo
__________ can lead to poor fat suppression Correct Answer
inhomogeneity
___________ is an effect resulting in a slightly weakened
magnetic field when a substance is introduced into it. This
material is considered to have a negative magnetic susceptibility
Correct Answer diamagnetism
___________ is defined as the range or spectrum of frequencies
(minimum to maximum processed frequency) of a pulse
sequence acquired by an RF system Correct Answer
Bandwidth
, ___________ sequences use T1 gradient echoes with TR and
FA selections to suppress signal from stationary tissues,
visualizing flowing blood by flow-related enhancement, whereas
________ sequences use T2 gradient echoes with parameter
selections that suppress stationary tissue and rely on velocity-
induced phase shifts for vascular signal Correct Answer TOF
MRA; PC MRA
_____________ is comprised of the components of the
magnetization in the imaging object after excitation, sampled
from the receiver coil signal and stored as a function of time
during the data acquisition of an MR imaging sequence Correct
Answer raw data
a depression in the base of the skull where the pituitary gland is
located is called the Correct Answer sella turcica
a disadvantage of TOF MRA is high signal in some background
tissues. To minimize signal from background tissues, TE should
be selected that enable the signals from fat and water to be
Correct Answer out of phase
a disease that is characterized by narrowing of the aorta is called
an Correct Answer aortic coarctation
a magnetic vector possesses attributes of both ______ and
_________ Correct Answer magnitude (strength) and direction
a narrow receiver bandwidth _____________ susceptibility
artifact Correct Answer increases
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