Table 1 Dose conformity requirements and definition of protocol deviations. R_100% and R_50% = ratio of respectively the 100% and 50% Prescription Isodose Volume to the PTV. D_{2 cm} = dose maximum at 2 cm from the PTV as percentage of the prescribed dose. V_{20 Gy} = Percent of lung receiving 20 Gy or more (both lungs minus GTV).

<1.15

1.15–1.25

<8

8–10

<55

55–60

<4

4–6

0–20

<1.15

1.15–1.25

<7

7–8

<65

65–70

<6

6–8

20–40

<1.10

1.10–1.20

<6

6–6.5

<65

65–75

<8

8–10

>40

Type B models (more advanced algorithms)

R_100%

R_50%

D_{2 cm} (%)

V_{20 Gy} (%)

PTV (cc)

Deviation

Deviation

Deviation

Deviation

None

Minor

None

Minor

None

Minor

None

Minor

<1.25

1.25–1.40

<12

12–14

<65

65–75

<5

5–8

0–20

<1.15

1.15–1.25

<9

9–11

<70

70–80

<6

6–10

20–40

<1.10

1.10–1.20

<6

6–8

<70

70–80

<10

10–15

>40