Last Updated：2022/12/24
However, there is no previous research that demonstrates the impact of lung size or the phase of respiration on the CTR. Interestingly, a large change in the CTR between inspiration and expiration has been described in a textbook of pediatric radiology; and this phenomenon was suggested as a confoundable finding in the evaluation of congenital heart diseases, since infants or children cannot hold their breath during CT scanning [12 ].
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However,
there
is
no
previous
research
that
demonstrates
the
impact
of
lung
size
or
the
phase
of
respiration
on
the
CTR.
Interestingly,
a
large
change
in
the
CTR
between
inspiration
and
expiration
has
been
described
in
a
textbook
of
pediatric
radiology;
and
this
phenomenon
was
suggested
as
a
confoundable
finding
in
the
evaluation
of
congenital
heart
diseases,
since
infants
or
children
cannot
hold
their
breath
during
CT
scanning
[12
].
