<s>
Dynamic	B-Algorithm
angiothermography	I-Algorithm
(	O
DATG	O
)	O
is	O
a	O
technique	O
for	O
the	O
diagnosis	O
of	O
breast	O
cancer	O
.	O
</s>
<s>
This	O
technique	O
,	O
though	O
springing	O
from	O
the	O
thermography	B-Algorithm
of	O
old	O
conception	O
,	O
is	O
based	O
on	O
a	O
completely	O
different	O
principle	O
.	O
</s>
<s>
In	O
the	O
early	O
1970s	O
,	O
studies	O
of	O
Prof	O
.	O
J	O
.	O
Tricoire	O
in	O
France	O
focused	O
on	O
the	O
application	O
of	O
contact	O
thermography	B-Algorithm
for	O
the	O
screening	O
of	O
breast	O
cancer	O
using	O
plates	O
with	O
liquid	B-Device
crystals	I-Device
.	O
</s>
<s>
During	O
the	O
time	O
at	O
which	O
contact	O
thermography	B-Algorithm
screening	O
was	O
being	O
practiced	O
more	O
detailed	O
studies	O
on	O
the	O
change	O
in	O
the	O
breast	O
due	O
to	O
the	O
presence	O
of	O
tumors	O
and	O
lesions	O
were	O
being	O
performed	O
.	O
</s>
<s>
Dynamic	B-Algorithm
angiothermography	I-Algorithm
utilizes	O
thermal	O
imaging	O
but	O
with	O
important	O
differences	O
with	O
the	O
“	O
old	O
”	O
thermography	B-Algorithm
,	O
that	O
impact	O
detection	O
performance	O
.	O
</s>
<s>
First	O
,	O
the	O
probes	O
are	O
much	O
improved	O
over	O
the	O
previous	O
liquid	B-Device
crystal	I-Device
plates	O
;	O
they	O
include	O
better	O
spatial	O
resolution	O
,	O
contrastive	O
performance	O
,	O
and	O
the	O
image	O
is	O
formed	O
more	O
quickly	O
.	O
</s>
<s>
When	O
the	O
sensor	O
is	O
leaning	O
on	O
the	O
breast	O
,	O
the	O
heat	O
,	O
produced	O
by	O
vascularization	O
,	O
induces	O
an	O
image	O
due	O
to	O
the	O
change	O
of	O
the	O
liquid	B-Device
crystal	I-Device
state	O
that	O
pass	O
from	O
solid	O
(	O
black	O
coloured	O
)	O
to	O
liquid	O
.	O
</s>
<s>
While	O
in	O
the	O
previous	O
contact	O
thermography	B-Algorithm
the	O
doctor	O
studied	O
the	O
colour	O
distribution	O
,	O
in	O
the	O
new	O
methodology	O
(	O
dynamic	B-Algorithm
angiothermography	I-Algorithm
)	O
the	O
image	O
is	O
inspected	O
for	O
the	O
information	O
conveyed	O
about	O
the	O
local	O
blood	O
distribution	O
.	O
</s>
<s>
Comparative	O
diagnostic	O
exams	O
of	O
reference	O
for	O
the	O
cancer	O
of	O
the	O
breast	O
are	O
mammography	O
(	O
the	O
“	O
gold	O
”	O
standard	O
)	O
,	O
ultrasounds	B-Application
,	O
and	O
for	O
3D	O
imaging	O
nuclear	O
magnetic	O
resonance	O
or	O
recently	O
developed	O
approaches	O
to	O
CT	O
of	O
the	O
breast	O
.	O
</s>
<s>
However	O
,	O
due	O
to	O
the	O
general	O
equality	O
in	O
acoustic	O
impedance	O
for	O
many	O
types	O
of	O
structures	O
in	O
the	O
breast	O
ultrasound	B-Application
imaging	I-Application
detects	O
many	O
“	O
abnormalities	O
”	O
or	O
“	O
potential	O
sites	O
”	O
that	O
are	O
false	O
positives	O
and	O
this	O
limits	O
its	O
usefulness	O
.	O
</s>
<s>
Dynamic	B-Algorithm
angiothermography	I-Algorithm
(	O
DATG	O
)	O
is	O
a	O
technique	O
that	O
does	O
not	O
require	O
ionizing	O
radiation	O
or	O
toxic	O
contrast	O
agents	O
,	O
can	O
be	O
used	O
on	O
patients	O
of	O
all	O
ages	O
,	O
has	O
a	O
good	O
specificity	O
and	O
is	O
able	O
to	O
diagnose	O
even	O
precancerous	O
lesions	O
while	O
it	O
is	O
not	O
able	O
to	O
measure	O
the	O
size	O
of	O
a	O
tumor/lesion	O
.	O
</s>
