Table 2 Tumor and treatment characteristics (n = 76)

Tumor status

 Naïve

40

 Reginal or local recurrence

36

Number of lesions

 1

64

 2

5

 3

4

 4

3

Maximum tumor diameter (cm),

 median (range)

4.6 (1.5–13.0)

Portal vein invasion

  ≤ 1

46

 2

9

 3

16

 4

5

Hepatic vein invasion

  ≤ 1

10

 2

54

 3

12

Bile duct invasion

  ≤ 1

72

 2

0

 3

4

 4

0

Protocol dose (BED₁₀)

 45.0 Gy/2 fractions (146.3 Gy)

10

 48.0 Gy/2 fractions (163.2 Gy)

22

 52.8 Gy/4 fractions (122.5 Gy)

37

 60.0 Gy/4 fractions (150.0 Gy)

7