Varian Medical Systems International Ag

Varian Medical Systems, Inc.

Siemens Healthineers International Ag

Stefan J Thieme-Marti

Mathias Lehmann

Andres Graf

Reto Ansorge

Christof Sidler

Josh Star-Lack

Gary Fredric Virshup

Juha Kauppinen

Daniel Morf

Joakim Pyyry

Michelle Marie Svatos

Mingshan Sun

Herbert F Cattell

Qingxiang Ke

Mika Miettinen

Matthias Oster

Jennifer Kieselmann

Jeff Everett

Respective target positions, into which elements of a radiation therapy machine are to be moved (e.g., prior to beginning treatment of a patient), are determined. A candidate path, which describes movements of the elements from respective initial positions to the respective target positions, is defined and accessed. The candidate path is evaluated to determine whether it would result in a collision between any of the elements. The candidate path is included in a set of candidate paths when the candidate path does not result in a collision between any of the elements. A value of a measure (e.g., a measure of efficiency), used for ranking each candidate path in the set of candidate paths, is determined. A path is selected from the set of candidate paths based on the ranking.

Path planning for radiation treatment

A virtual beam's-eye view of a planning target volume is generated based on volumetric image data acquired immediately prior to radiation therapy by a radiation therapy system. The virtual beam's-eye view can then be displayed to confirm that, with the patient disposed in the current position, the planned beam-delivered treatment extends beyond the surface of the skin. In some embodiments, the virtual beam's-eye view can be displayed in conjunction with a beam's-eye view that is generated based on volumetric image data acquired during treatment planning, to create a blended beam's-eye view. In some embodiments, a field outline of a treatment beam can be superimposed on the blended beam's-eye view, thereby illustrating whether the planned beam-delivered treatment extends beyond the surface of the skin of the patient. The blended beam's-eye view can facilitate a manual confirmation process that verifies the planned beam-delivered treatment extends beyond the surface of the skin.

Virtual beam's-eye view imaging in radiation therapy for patient setup

Systems and methods for determining beam asymmetry in a radiation treatment system using electronic portal imaging devices (EPIDs) without implementation of elaborate and complex EPID calibration procedures. The beam asymmetry is determined based on radiation scattered from different points in the radiation beam and measured with the same region of interest ROI of the EPID.

Systems, methods, and devices for radiation beam asymmetry measurements using electronic portal imaging devices

An apparatus for use with a medical system, the medical system comprising a medical device configured to treat and/or image a patient, includes: a camera configured to capture an image of a first mirror, wherein the image of the first mirror contains an image of at least a part of the patient and/or an image of at least a part of the medical system; wherein the camera comprises electronics that are not radiation-hard.

Live view camera for radiation therapy

A radiation-treatment plan to treat a treatment target in a given patient takes into account imaging-based dosing of that patient by, for example, automatically accounting for radiation dosing of the given patient that results from imaging to determine at least one physical position of the given patient when forming the radiation-treatment plan. These teachings are particularly beneficial when applied in application settings where the aforementioned imaging comprises obtaining images using megavoltage-sourced radiation. By one approach these teachings provide for automatically accounting for radiation dosing of the given patient that results from imaging by, at least in part, automatically adjusting therapeutic dosing of the given patient as a function of the radiation dosing of the given patient that results from such imaging.

Accounting for imaging-based radiation doses

A radiation device directs a beam of radiation onto a target. The beam can be adjusted using, for example, a control for setting beam shape and a control for setting beam intensity. The target is supported on a surface that can be adjusted using, for example, a control for setting surface position and a control for setting a speed for moving the surface. Controls are selected to adjust the beam and the surface cooperatively in order to compensate for movement of the target.

Multi-axis dynamic tracking for radiation therapy

A motion platform includes a base, a platform, and a suspension supporting the platform above the base. Strings preload the platform toward the base while the suspension pushes the platform away from the base. Actuators pull and release the strings to manipulate the platform in multiple degrees of freedom.

Six degrees of freedom motion platform

The claimed subject matter describes a novel technique to measure the beam profile using an area detector. In one embodiment, a set of one-dimensional beam profile measurements is performed by taking two images under the same source conditions but at two different positions of the detector, with each position of the detector shifted by a certain distance in the direction corresponding to the direction of the one-dimensional profile measurement. In further embodiments, a set of two-dimensional beam profile measurements is achieved by determining a second set of one-dimensional profiles from the same sampling points in a second direction and building a two-dimensional map of the beam profile by correlating the first one-dimensional profile measurement with the second one-dimensional profile measurement.

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Baden, Switzerland

Stefan J Thieme-Marti