Irradiation geometry (field, gantry) | Phantom assembly | ||
---|---|---|---|
(6+8) x 15 cm2 | standard BDE insert with the ionization chamber placed in the BDE part of the phantom | - 2.9 | 2.9 |
non-standard Water equivalent insert with the ionization chamber placed in the BDE part of the phantom | - 0.7 | - 0.2 | |
(3+8) x 15 cm2 | standard BDE insert with the ionization chamber placed in the BDE part of the phantom | - 3.0 | 5.1 |
non-standard Water equivalent insert with the ionization chamber placed in the BDE part of the phantom | - 0.7 | - 0.1 | |
(4+10) x 15 cm2 | standard BDE insert with the ionization chamber placed in the BDE part of the phantom | - 5.7 | 5.4 |
non-standard Water equivalent insert with the ionization chamber placed in the BDE part of the phantom | 0.5 | 1.3 |
V [cm3] | ||||
---|---|---|---|---|
0 | - 3.9 | 2.1 | 4.4 | 1.9 |
0.035 | - 2.6 | 1.5 | 2.5 | 1.9 |
0.141 | - 1.4 | 1.3 | 1.8 | 1.7 |
0.279 | - 0.3 | 1.2 | 1.2 | 1.5 |
0.573 | 0.3 | 1.4 | 0.4 | 1.3 |
Set-up | Irradiation geometry | Field size [cm2] | SSD/SAD | Gantry angle [°] | reference point | measuring points |
---|---|---|---|---|---|---|
1 | Single square fields | 10×10 | SSD | 0 | I5 | I1, I3, I5-10 |
2 | 10×10 | SAD | 0 | I5 | I, I, I135-10 | |
3 | 4×4 | SAD | 0 | I5 | I1-9 | |
4 | 10×10 | SAD | 90 | I3 | I2-10 | |
5 | Rectangular field | 10× 15 | SAD | 300 | I1 | I1, I4, I6-8, I10 |
6 | Single asymmetric fields | (6+8)×15 | SAD | 0 | I5 | I1-10 |
7 | (3+8)×15 | SAD | 90 | I5 | I, I15-10 | |
8 | (4+10)×15 | SAD | 180 | I5 | I1-3, I5-10 | |
9 | (3+7)×15 | SAD | 300 | I5 | I2-10 | |
12×10 | SAD | 0 | ||||
10 | 4 fields (box) | 12×10 | SAD | 180 | I5 | I2-5 |
12×8 | SAD | 90 | ||||
12×8 | SAD | 270 | ||||
4×4 | SAD | 30 | ||||
11 | 3 fields | 16×4 | SAD | 90 | I5 | I2, I5-9 |
16×4 | SAD | 270 | ||||
12 | Diamond-shaped field | 14×14 | SAD | 0 | I3 | I1, I3, I5-10 |
13 | Irregular L shaped field | / | SAD | 45 | I1 | I1-2, I4-6, I8-10 |
14 | MLC cylinder shaped field | / | SAD | 0 | I2 | I1,2, I5, I8,9, I10 |
16×4 | SAD | 90 | ||||
15 | 3 non-coplanar fields | 16×4 | SAD | 270 | I5 | I1, I5-6, I8, I10 |
4×4 Couch angle = 270° | SAD | 30 |