<s>
Magnetic	B-Algorithm
resonance	I-Algorithm
microscopy	I-Algorithm
(	O
MRM	O
,	O
μMRI	B-Algorithm
)	O
is	O
magnetic	O
resonance	O
imaging	O
(	O
MRI	O
)	O
at	O
a	O
microscopic	O
level	O
down	O
to	O
the	O
scale	O
of	O
microns	O
.	O
</s>
<s>
The	O
first	O
definition	O
of	O
MRM	O
was	O
MRI	O
having	O
voxel	B-Algorithm
resolutions	O
of	O
better	O
than	O
100μm	O
.	O
</s>
<s>
Magnetic	B-Algorithm
resonance	I-Algorithm
microscopy	I-Algorithm
refers	O
to	O
very	O
high	O
resolution	O
MRI	O
imaging	O
(	O
down	O
to	O
nanometer	O
scale	O
,	O
in	O
some	O
cases	O
comparable	O
with	O
histopathology	O
)	O
.	O
</s>
<s>
Sensitivity	O
:	O
Because	O
the	O
voxels	B-Algorithm
for	O
MRM	O
can	O
be	O
1/100	O
,	O
000	O
of	O
those	O
in	O
MRI	O
,	O
the	O
signal	O
is	O
proportionately	O
weaker	O
.	O
</s>
<s>
Because	O
the	O
specimen	O
needs	O
to	O
be	O
in	O
a	O
high	O
vacuum	B-General_Concept
at	O
cryogenic	O
temperatures	O
,	O
MRFM	O
can	O
be	O
used	O
only	O
for	O
solid	O
state	O
materials	O
.	O
</s>
