<s>
Portable	B-Algorithm
ultrasound	I-Algorithm
is	O
a	O
modality	O
of	O
medical	B-Application
ultrasonography	I-Application
that	O
utilizes	O
small	O
and	O
light	O
devices	O
,	O
compared	O
to	O
the	O
console-style	O
ultrasound	B-Application
machines	I-Application
that	O
preceded	O
them	O
.	O
</s>
<s>
In	O
most	O
cases	O
these	O
mobile	B-Algorithm
ultrasound	I-Algorithm
systems	O
could	O
be	O
carried	O
by	O
hand	O
and	O
in	O
some	O
cases	O
even	O
operated	O
for	O
a	O
time	O
on	O
battery	O
power	O
alone	O
.	O
</s>
<s>
The	O
first	O
portable	B-Algorithm
ultrasound	I-Algorithm
machines	I-Algorithm
arrived	O
in	O
the	O
early	O
1980s	O
but	O
battery	O
powered	O
systems	O
that	O
could	O
be	O
easily	O
carried	O
did	O
not	O
arrive	O
until	O
the	O
late	O
1990s	O
.	O
</s>
<s>
The	O
ADR	O
2130	O
,	O
designed	O
by	O
Marty	O
Wilcox	O
was	O
the	O
first	O
portable	B-Algorithm
ultrasound	I-Algorithm
unit	O
commercially	O
available	O
in	O
the	O
United	O
States	O
,	O
being	O
released	O
in	O
1975	O
.	O
</s>
<s>
ADR	O
was	O
later	O
purchased	O
by	O
ATL	O
which	O
later	O
spun	O
off	O
its	O
portable	O
technology	O
into	O
a	O
company	O
that	O
became	O
Sonosite	B-Algorithm
.	O
</s>
<s>
ATL	O
was	O
later	O
purchased	O
by	O
Philips	O
while	O
Sonosite	B-Algorithm
came	O
out	O
with	O
its	O
first	O
battery	O
powered	O
portable	O
offering	O
,	O
the	O
Sonosite	B-Algorithm
180	O
released	O
in	O
1998	O
.	O
</s>
<s>
Previous	O
to	O
this	O
,	O
Ecton	O
produced	O
a	O
low-cost	O
portable	O
cardiac	B-Application
ultrasound	I-Application
system	O
that	O
could	O
be	O
carried	O
by	O
hand	O
in	O
March	O
1998	O
,	O
called	O
the	O
Sonnet	O
but	O
the	O
test	O
prototypes	O
were	O
never	O
put	O
into	O
full-scale	O
production	O
because	O
of	O
difficulty	O
finding	O
venture	O
capital	O
.	O
</s>
<s>
Ecton	O
was	O
purchased	O
by	O
Acuson	O
in	O
1999	O
and	O
the	O
Sonnet	O
system	O
was	O
released	O
as	O
the	O
Acuson	O
Cypress	O
Cypress	O
portable	B-Algorithm
ultrasound	I-Algorithm
system	I-Algorithm
in	O
2000	O
.	O
</s>
<s>
In	O
1994	O
,	O
Dr.	O
Alice	O
Chiang	O
,	O
through	O
technology	O
she	O
developed	O
at	O
MIT	O
,	O
patented	O
the	O
first	O
color	O
portable	B-Algorithm
ultrasound	I-Algorithm
.	O
</s>
<s>
She	O
founded	O
Terason	O
,	O
a	O
medical	O
device	O
technology	O
company	O
,	O
increasing	O
the	O
availability	O
of	O
portable	B-Algorithm
ultrasound	I-Algorithm
imaging	O
.	O
</s>
<s>
Portable	B-Algorithm
ultrasound	I-Algorithm
machines	I-Algorithm
are	O
typically	O
used	O
in	O
situations	O
where	O
space	O
is	O
limited	O
,	O
mobility	O
is	O
important	O
,	O
or	O
the	O
scanning	O
must	O
be	O
done	O
in	O
the	O
field	O
.	O
</s>
<s>
OB/GYN	O
doctors	O
were	O
the	O
first	O
to	O
start	O
using	O
portable	B-Algorithm
ultrasound	I-Algorithm
systems	I-Algorithm
as	O
these	O
could	O
be	O
brought	O
bedside	O
or	O
were	O
affordable	O
enough	O
to	O
be	O
purchased	O
by	O
a	O
private	O
practice	O
.	O
</s>
<s>
Currently	O
portable	B-Algorithm
ultrasound	I-Algorithm
machines	I-Algorithm
are	O
used	O
in	O
Cardiac	B-Application
,	O
Vascular	O
,	O
Radiology	O
,	O
Endocrinology	O
,	O
Pediatric	O
,	O
Gastroenterology	O
and	O
OB/GYN	O
applications	O
.	O
</s>
<s>
In	O
addition	O
,	O
EMS	O
personnel	O
from	O
several	O
countries	O
including	O
Germany	O
,	O
Italy	O
,	O
France	O
,	O
and	O
the	O
United	O
States	O
have	O
used	O
portable	B-Algorithm
ultrasound	I-Algorithm
evaluations	O
in	O
the	O
field	O
.	O
</s>
