| |
CT-based target definition
|
Conventional target definition
|
p-values
|
|---|
|
Absolute volumes (cm3)
| | | |
|
Breast PTV
|
753 (209 – 1548)
|
-
|
-
|
|
Boost PTV
|
117 (40 – 243)
|
-
|
-
|
|
Breast PTV
CT
beyond conventional field borders (cm)
| | | |
|
Medial
|
0.03 (-1.5 – 1.1)
| |
ns
|
|
Lateral
|
0.37 (-1.1 – 1.2)
| |
0.01
|
|
Dimensions boost fields and PTVs (cm)
| | | |
|
Field length
|
7.9 (5.4 – 10.4)
|
6.7 (4.5 – 8.5)
|
< 0.001
|
|
PTVCT extending beyond PTVCON
| | | |
|
right
|
0.18 (-0.6 – 1.2)
| |
0.03
|
|
left
|
0.36 (-0.4 – 1.7)
| |
0.01
|
|
ventral
|
0.22 (-1.7 – 1.7)
| |
ns
|
|
dorsal
|
0.23 (-0.7 – 2.5)
| |
ns
|
- PTV: planning target volume; PTVCT: computed tomography (CT)-based PTV; PTVCON: conventional PTV. Data presented as mean values, with ranges in parentheses.
