Table 4.

Radiation characteristics (n = 114 studies)

Radiation characteristics	Number of studies (%)
Technique
SRS	82 (71.9)
SBRT	22 (19.3)
SRS plus or vs SBRT	8 (7)
Not reported	2 (1.8)
Total dose
Reported	98 (86)
Not reported	16 (14)
Dose per fraction
Reported	89 (78.1)
Not reported	25 (21.9)
Number of fractions
Reported	89 (78.3)
Not reported	25 (21.7)
Overall treatment time
Reported	72 (63.2)
Not reported	42 (36.8)
Equivalent dose in 2 Gy fractions (EQD2)
Reported	4 (3.5)
Not reported	110 (96.5)
Prescription isodose
Reported	67 (58.8)
Not reported	47 (41.2)
Isodose covering PTV
Reported	25 (21.9)
Not reported	89 (78.1)
Dose to the isocentre
Reported	19 (16.7)
Not reported	95 (83.3)
Planning treatment technique
Reported	36 (31.6)
Not reported	78 (68.4)
Energy
Reported	22 (19.3)
Not reported	92 (80.7)
Type of machine
Reported	66 (57.9)
Not reported	48 (42.1)
Use of immobilisation devices
Reported	53 (46.5)
Not reported	61 (53.5)
Guiding imaging
Reported	40 (35.1)
Not reported	74 (64.9)
Methods to assess tumour motion
Reported	23 (20)
Not reported	91 (79.8)