<s>
Diffuse	B-Algorithm
optical	I-Algorithm
imaging	I-Algorithm
(	O
DOI	O
)	O
is	O
a	O
method	O
of	O
imaging	O
using	O
near-infrared	O
spectroscopy	O
(	O
NIRS	O
)	O
or	O
fluorescence-based	O
methods	O
.	O
</s>
<s>
When	O
used	O
to	O
create	O
3D	O
volumetric	O
models	O
of	O
the	O
imaged	O
material	O
DOI	O
is	O
referred	O
to	O
as	O
diffuse	B-Algorithm
optical	I-Algorithm
tomography	I-Algorithm
,	O
whereas	O
2D	O
imaging	O
methods	O
are	O
classified	O
as	O
diffuse	B-Algorithm
optical	I-Algorithm
imaging	I-Algorithm
.	O
</s>
<s>
The	O
technique	O
may	O
also	O
be	O
referred	O
to	O
as	O
diffuse	B-Algorithm
optical	I-Algorithm
tomography	I-Algorithm
(	O
DOT	O
)	O
,	O
near	O
infrared	O
optical	B-Algorithm
tomography	I-Algorithm
(	O
NIROT	O
)	O
or	O
fluorescence	O
diffuse	B-Algorithm
optical	I-Algorithm
tomography	I-Algorithm
(	O
FDOT	O
)	O
,	O
depending	O
on	O
the	O
usage	O
.	O
</s>
<s>
In	O
neuroscience	O
,	O
functional	O
measurements	O
made	O
using	O
NIR	O
wavelengths	O
,	O
DOI	O
techniques	O
may	O
classify	O
as	O
functional	B-Algorithm
near	I-Algorithm
infrared	I-Algorithm
spectroscopy	I-Algorithm
fNIRS	B-Algorithm
.	O
</s>
<s>
Photon	O
migration	O
in	O
diffusive	O
media	O
is	O
described	O
by	O
the	O
heuristic	O
model	O
of	O
the	O
diffusion	B-Algorithm
equation	I-Algorithm
,	O
which	O
offers	O
analytical	O
solutions	O
for	O
some	O
specific	O
geometries	O
.	O
</s>
<s>
Diffuse	B-Algorithm
optical	I-Algorithm
imaging	I-Algorithm
can	O
be	O
implemented	O
in	O
time	B-Algorithm
domain	I-Algorithm
,	O
frequency	O
domain	O
or	O
continuous	O
wave	O
,	O
in	O
reflectance	O
or	O
transmittance	O
configuration	O
.	O
</s>
