<s>
Xenon	O
Xe	O
129	O
hyperpolarized	O
,	O
sold	O
under	O
the	O
brand	O
name	O
Xenoview	O
,	O
is	O
a	O
hyperpolarized	O
contrast	B-Algorithm
agent	I-Algorithm
indicated	O
for	O
use	O
with	O
magnetic	O
resonance	O
imaging	O
(	O
MRI	O
)	O
for	O
evaluation	O
of	O
lung	O
ventilation	O
,	O
and	O
approved	O
for	O
people	O
aged	O
12	O
years	O
of	O
age	O
and	O
older	O
.	O
</s>
<s>
However	O
,	O
3He	O
is	O
mostly	O
produced	O
by	O
the	O
beta	O
decay	O
of	O
tritium	B-Language
(	O
3H	O
)	O
,	O
which	O
is	O
a	O
product	O
of	O
nuclear	O
warhead	O
production	O
.	O
</s>
<s>
Ultimately	O
,	O
the	O
time	O
constraints	O
of	O
these	O
images	O
requires	O
different	O
and	O
novel	O
MRI	B-Algorithm
sequence	I-Algorithm
designs	O
.	O
</s>
