<s>
Interventional	B-Algorithm
neuroradiology	I-Algorithm
(	O
INR	O
)	O
also	O
known	O
as	O
neurointerventional	B-Algorithm
surgery	I-Algorithm
(	O
NIS	O
)	O
,	O
endovascular	O
therapy	O
(	O
EVT	O
)	O
,	O
endovascular	O
neurosurgery	O
,	O
and	O
interventional	B-Algorithm
neurology	I-Algorithm
is	O
a	O
medical	O
subspecialty	O
of	O
radiology	O
,	O
neurosurgery	O
,	O
and	O
neurology	O
specializing	O
in	O
minimally	O
invasive	O
image-based	O
technologies	O
and	O
procedures	O
used	O
in	O
diagnosis	O
and	O
treatment	O
of	O
diseases	O
of	O
the	O
head	O
,	O
neck	O
,	O
and	O
spine	O
.	O
</s>
<s>
He	O
performed	O
the	O
first	O
brain	O
angiography	O
in	O
Lisbon	O
in	O
1927	O
by	O
injecting	O
an	O
iodinated	B-Algorithm
contrast	I-Algorithm
medium	I-Algorithm
into	O
the	O
internal	O
carotid	O
artery	O
and	O
using	O
the	O
X-rays	B-Library
discovered	O
30	O
years	O
earlier	O
by	O
Roentgen	O
in	O
order	O
to	O
visualize	O
the	O
cerebral	O
vessels	O
.	O
</s>
<s>
He	O
can	O
be	O
considered	O
,	O
therefore	O
,	O
the	O
first	O
interventional	B-Algorithm
neuroradiologist	I-Algorithm
.	O
</s>
<s>
This	O
technique	O
was	O
subsequently	O
refined	O
by	O
neuroradiologists	O
all	O
over	O
the	O
world	O
and	O
mainly	O
in	O
France	O
,	O
where	O
interventional	B-Algorithm
neuroradiology	I-Algorithm
developed	O
and	O
flourished	O
.	O
</s>
<s>
Between	O
January	O
and	O
June	O
2015	O
,	O
five	O
major	O
randomized	O
trials	O
were	O
published	O
in	O
the	O
New	O
England	O
Journal	O
of	O
Medicine	O
(	O
NEJM	O
)	O
with	O
the	O
collaboration	O
of	O
interventional	B-Algorithm
neuroradiologists	I-Algorithm
and	O
stroke	O
neurologists	O
(	O
in	O
the	O
Netherlands	O
,	O
Canada	O
,	O
Australia	O
,	O
US	O
and	O
Spain	O
)	O
regarding	O
the	O
role	O
of	O
mechanical	O
thrombectomy	O
in	O
the	O
treatment	O
of	O
ischemic	O
stroke	O
,	O
demonstrating	O
that	O
if	O
it	O
is	O
performed	O
in	O
centers	O
with	O
proven	O
experience	O
,	O
intra-arterial	O
mechanical	O
thrombectomy	O
is	O
more	O
effective	O
than	O
traditional	O
treatment	O
(	O
intravenous	O
thrombolytic	O
injection	O
)	O
.	O
</s>
<s>
Thrombectomy	O
is	O
currently	O
recommended	O
by	O
the	O
guidelines	O
written	O
by	O
the	O
main	O
American	O
(	O
AHA/ASA	O
)	O
and	O
European	O
(	O
ESO-ESNR-ESMINT	O
)	O
societies	O
of	O
stroke	O
neurologists	O
and	O
interventional	B-Algorithm
neuroradiologists	I-Algorithm
.	O
</s>
<s>
The	O
following	O
is	O
a	O
list	O
of	O
diseases	O
and	O
conditions	O
typically	O
treated	O
by	O
neurointerventionalists	B-Algorithm
.	O
</s>
