Computer systems used to determine radiation treatment plans and deliver radiation

Abstract

Collision-free regions for one or more class solutions are predetermined (610, 620, and 630). Each class of solutions defines the limits of allowable field geometry variation. The collision-free zone in planning can be defined as a set of allowed isocenter positions relative to the fixture. The user can view the collision-free region to plan for a trade-off between field geometry and isocenter location. A collision-free zone in delivery can be defined as a set of allowable couch support coordinates. The treatment fields in the radiotherapy plan can be checked against said collision-free zones in delivery to determine if they pose any collision risk.

Description

[0001] Cross References to Related Applications [0002] This PCT application claims the benefit and priority of U.S. Nonprovisional Patent Application No. 15 / 441,898, filed February 24, 2017, entitled "USE OF COLLISION FREE REGIONTO PLAN AND DELIVERY RADIATION THERAPY TREATMENT," which is filed in its entirety under Incorporated by reference herein for all purposes. technical field [0003] The present disclosure relates generally to treatment planning for radiation therapy using external beam radiation therapy systems, and more specifically, to managing collision risk in the planning and delivery of radiation therapy plans. Background technique [0004] Modern radiation therapy techniques include the use of intensity-modulated radiation therapy ("IMRT"), usually through an external radiation therapy system such as a linear accelerator equipped with a multi-leaf collimator ("MLC"). The use of multi-leaf collimators in general, especially the use of IMRT fields, allows radi...

AI Technical Summary

Problems solved by technology

[0006] Certain field geometries may cause machine-to-machine or machine-to-patient collisions when performing radiation treatment planning with external beam radiation therapy systems

In such cases, it may be necessary to prevent the automatic execution of the treatment plan, otherwise accidents may occur

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