Expert consensus on robotic radiosurgery system for hepatocellular carcinoma.

Stereotactic ablative radiotherapy (SABR) is increasingly administered in hepatocellular carcinoma (HCC) treatment. The CyberKnife (CK) system is the most advanced robotic radiosurgery system for delivering SABR. Using three-dimensional multi-angle irradiation, a unique fiducial marker, and a synchronous respiratory tracking system, the off-target caused by respiratory movement is maximally avoided, which achieves favorable dose conformation, and the dose rapidly drops off in the surrounding normal tissue. In a real sense, CK achieves accurate positioning, planning, and irritation. The Chinese expert consensus on CK for HCC was established after discussion.