Biomedical Engineering Reference
In-Depth Information
(b)
(b)
.../",(8,)
8,
(e)
" r-------------------------,
(c)
"
(c)
"
"
"
,
,
Ji
,
~
;
,
~
~
I>
"
,
,
•
1i
<
,
:;
.,
."
i
.,
1
<
."
.1>
·20
<
."
."
.~o
.lO
6========,-
o
,
40
,
.,
.w
160 200
l~O
I80
no
J60
J\n,gl~
IlkI:-)
H O 280
no
J60
OJ
80
12Q
SO
120
120
160
160
200
200
240
280
320
J60
A9gl~
Ilkg.)
AlIgl~\o.~,
Figure 4.
Local signed distance,
d
j
(
θ
i
)
, between two boundaries. (a) Sample prostate im-
age. (b) Manual- (solid) and algorithm- (dotted) outlined boundaries. (c)
d
j
(
θ
i
)
calculated
for boundaries in (b). Reprinted with permission from the AAPM.