What is stereotactic body radiation therapy (SBRT)?

The principles of cranial SRS – where delivery is accurate to within one to two millimetres – are now being applied to the treatment of body tumours with a procedure known as stereotactic body radiation therapy (SBRT). This procedure is also available at some of our practices. SBRT is used in the body and common disease sites include the lungs, liver, abdomen and spine. SRS and SBRT are usually performed on an outpatient basis. The immobilisation, imaging and planning process is very different to the conventional planning process. SRS and SBRT are important alternatives to invasive surgery, especially for patients who are unable to undergo surgery, as well as for tumours and abnormalities in challenging positions – those located close to vital organs/anatomic regions, or those subject to movement within the body. 4D CT scanning (gated) is used to assist with this movement in the body.