| 摘要 |
A system for stereotactic-guided radiation therapy, method of stereotactic-guided radiation therapy, and a collimator useful in treating a patient with stereotactic-guided radiation therapy includes a variable length pathway (317) for the beam of radiation (311), the pathway having associated therewith a material (318) substantially equivalent to the tissue of the patient (305), whereby the radiation beam always travels through the same distance of actual tissue and tissue equivalent material. <IMAGE> |
