Multileaf collimator cone enabling stereotactic radiosurgery

Abstract

An apparatus includes a first multileaf collimator comprising a plurality of pairs of beam-blocking leaves 200 each comprising an end portion. The end portions of beam-blocking leaves of two adjacent pairs are configured to collectively form an aperture 210 when the two adjacent pairs of beam-blocking leaves are closed. The aperture may be sized and shaped to allow a radiation beam to pass through for radiosurgery.

Description

technical field [0001] The present disclosure generally relates to radiation devices and methods. In particular, various embodiments of multileaf collimators (MLCs) that enable and enhance radiosurgery and stereotactic radiosurgery are described. Background technique [0002] Radiosurgery is a highly precise, intensive form of radiation therapy. Stereotactic radiosurgery (SRS) is generally referred to as the application of high doses of radiation in a single fraction based on specially defined treatment coordinates. Stereotactic radiation therapy is similar to SRS, with the exception that usually two or more fractions are used for patient treatment. It is worth noting that the term "stereotaxic" may imply the use of a stereotaxic coordinate system for patient positioning for treatment. Over time, image-guided procedures that do not rely on stereotaxic coordinates, as well as other forms of patient and tumor localization, have been relegated to the category of stereotaxic ...

AI Technical Summary

Problems solved by technology

The "virtual cone" approach requires two passes of the MLC per recliner angle, and the general MLC blade shape designed for other purposes may result in compromising the shape of the delivered radiation and may raise user concerns that it may fail to produce radiation Robust implementation of delivery

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