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Siddon’s raytracing algorithm
Siddon, Med Phys 12:252, 1985
X
1
X
2
X
N
…
Y
1
Y
2
Y
N
.
.
.
ℎ
from A to B
( ) = + −
= + −
= ( − )
2
+( − )
2
ℎ
=
1
+ − 1
=
1
+ − 1
,
= ( − )/( − )
,
= ( − )/( − )
=
,
=
1
( −
−1
)
,
, ( )
Point A:
a
=0
Point B:
a
=1