T
1
,
the T
1
-reduction induced by breathing pure
oxygen, has been used for lung functional imaging. While
this effect is primarily attributed to molecular oxygen
(O
2
) dissolved in blood, the same also occurs
in tissue.
T
1
thus
provides a measure of lung function comprised of various
aspects. The T
1
reduction
in tissue alone was examined using porcine lung explants
in air and oxygen atmosphere. T
1
reductions
of 12%, similar to those observed
in
vivo
were
measured. T
1
in
the bloodless explants was found to be significantly
shorter than
in
vivo
. Additionally, a measurement of a preserved
explant yielded even smaller T
1
and
T
1
.
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Keywords