Magnetic Resonance (MRI) Medical Imaging

Magnetic Resonance (MRI) Medical Imaging

Order Description
The writer should be specialist of Magnetic Resonance ( MRI)
MRES7001
Assignment
2
QUESTIONS
Q1.
(12
marks)
Examine
the
images
A
and
B
acquired
at
7T
below.
For
each
image,
discuss
the
origin
of
the
contrast
observed
in
the
CSF,
white
matter
(WM)
and
grey
matter
(GM).
As
part
of
your
answer:
a. state
the
type
of
weighting
used
b. predict
a
likely
sequence
that
could
produce
this
weighting
c. suggest
possible
TE,
TR,
and
TI
(if
appropriate)
values
that
might
produce
these
images
(given
average
T1
at
7T
of
CSF
is
approx.
4sec,
WM
1.4sec
and
GM
2sec,
T2s
are
approx.
500ms,
40ms
and
50ms,
respectively).
Explain
your
reasoning.
d. For
image
B
what
changes
would
you
expect
to
see
if
exactly
the
same
sequence
was
performed
with
the
same
parameters
but
at
1.5T?
Q2. (8 marks) Examine the image below. Discuss the origin of the bright
(yellow arrows) and dark (red arrows) signal around the kidneys. In this
image, which is the read direction? How would you change the imaging
parameters to reduce the effect shown?
A
B