
61-1
61.1 Computed Tomography
In medical computed tomography (CT) [1] some kind of energy (such as x-rays, optical, electrical,
so
und,
ne
ar
in
frared,
et
c
.) is ap
plied
to th
e
su
bject
un
der
te
st
(S
UT),
an
d
th
e
mo
died
or tr
ansformed
fo
rm
of th
e
en
ergy
is co
llected
or de
tected
an
d
co
mpared
wi
th
th
e
in
cident
on
e
to re
construct
th
e
sp
atial
di
stribution
of th
e
ti
ssue
pr
operties
of th
e
SU
T
ca
lled
th
e
pa
rameters
of in
terest
(P
OI)
. e PO
I
of th
e
SU
T
gi
ves
an
atomical,
ph
ysiological
(b
iophysiological
or ph
ysiochemical),
or pa
thological
in
forma-
tion
. He
nce,
in me
dical
tom
ographic
im
aging,
th
e
en
ergy
us
ed
to pr
oduce
th
e
im
age
mu
st
pe
netrate
th
e
bo
dy