Table 1.

Components of SBRT

Component	Some examples
Imaging	General radiography; 3- or 4-Dimensional Computed Tomography (CT); Magnetic Resonance Imaging (MRI); Magnetic Resonance Spectroscopy (MRS); Positron Emission Tomography (PET) with or without image fusion with other techniques
Patient immobilisation and positioning	Stereotactic Body Frame™ (Elekta, USA); BodyFix™ (Medical Intelligence, Germany)
Image guidance	SonArray™modular ultrasound unit (Zmed, Ashland, USA); ExacTrac™ Ultrasound Localisation (BrainLAB, USA); BAT™ system (Nomos, USA).
SBRT-ready machines	Novalis™, BrainLAB, USA; Electa’s Synergy™; Varian’s Triology™; Tomotherapy’sHiArt (Tomotherapy, USA); Cyberknife™ (Accuray, USA), VERO-SBRT™ (Germany).