<s>
Flat-panel	O
Volume	B-Algorithm
CT	I-Algorithm
is	O
a	O
technique	O
under	O
development	O
to	O
make	O
computed	O
tomography	O
images	O
with	O
improved	O
performance	O
(	O
in	O
particular	O
,	O
with	O
improved	O
spatial	O
resolution	O
)	O
.	O
</s>
<s>
The	O
key	O
difference	O
between	O
volume	B-Algorithm
CT	I-Algorithm
and	O
traditional	O
CT	O
is	O
that	O
volume	B-Algorithm
CT	I-Algorithm
uses	O
a	O
two-dimensional	O
x-ray	B-Library
detector	O
orientation	O
(	O
usually	O
in	O
a	O
square	O
panel	O
orientation	O
)	O
,	O
to	O
take	O
multiple	O
two-dimensional	O
images	O
.	O
</s>
<s>
On	O
the	O
other	O
hand	O
,	O
the	O
conventional	O
CT	O
uses	O
a	O
one-dimensional	O
x-ray	B-Library
detector	O
orientation	O
(	O
a	O
row	O
of	O
detectors	O
)	O
to	O
take	O
one-dimensional	O
x-ray	B-Library
images	O
.	O
</s>
<s>
A	O
CT	O
machine	O
consists	O
of	O
an	O
x-ray	B-Library
source	O
,	O
an	O
x-ray	B-Library
detector	O
,	O
a	O
series	O
of	O
moving	O
stages	O
(	O
Gantry	O
)	O
and	O
computers	O
to	O
assemble	O
the	O
x-ray	B-Library
data	O
into	O
an	O
image	O
.	O
</s>
<s>
The	O
x-ray	B-Library
beam	O
used	O
in	O
volume	B-Algorithm
CT	I-Algorithm
is	O
cone	O
shaped	O
,	O
in	O
contrast	O
to	O
the	O
fan	O
shaped	O
beam	O
of	O
the	O
regular	O
CT	O
scanner	O
.	O
</s>
