Accuray Inc.

Sohail Sayeh

Gopinath Kuduvalli

Calvin R Maurer, Jr

James Y Wang

Phillip Wong

Matthew Core

Michael P Naylor

Sankaralingam Ramraj

Shutian Li

Ye Sheng

Calvin R Maurer

Petr Jordan

Eric Schnarr

Jay Bailey West

Jian Gao

Robert O'Connell

George Asmerom

Daniel Brown

Hendricus J Wolters

Kenneth W Schulze

Michael J Stratford-Collins

Monica A Condit

Jr Calvin R Maurer

A method of sequential monoscopic tracking is described. The method includes generating a plurality of projections of an internal target region within a body of a patient, the plurality of projections comprising projection data about a position of an internal target region of the patient. The method further includes generating external positional data about external motion of the body of the patient using one or more external sensors. The method further includes generating, by a processing device, a correlation model between the projection data and the external positional data by fitting the plurality of projections of the internal target region to the external positional data. The method further includes estimating the position of the internal target region at a later time using the correlation model.

Sequential monoscopic tracking

An apparatus includes a portion that moves along a guided path and a displacement gauge that outputs readings based on the portion's position on the guided path. The apparatus additionally includes an intermediate limit switch that is activated in response to the portion being moved to an intermediate position on the guided path. The apparatus also includes a processing device configured to calibrate the apparatus based on a first reading corresponding to a first position on the guided path and a second reading corresponding to a second position on the guided path. The processing device verifies the calibration based on a third reading corresponding to the intermediate position.

Automatic calibration for device with controlled motion range

A method and apparatus for tracking a target by tracking the location of an imaging device while the imaging device is tracking the target is described.

Target location by tracking of imaging device

A method and apparatus to automatically control the timing of an image acquisition by an imaging system in developing a correlation model of movement of a target within a patient.

Automatic correlation modeling of an internal target

An image guided treatment is performed to treat a target. To perform the image guided treatment, measurement data indicative of target motion is acquired. A timing of one or more x-ray images is determined based on the measurement data. Treatment may be performed on the target using the position of the target.

Controlling x-ray imaging based on target motion

An automatic collimator changer of a radiation treatment system.

Collimator changer

A robotic treatment delivery system including a linear accelerator (LINAC), and a robotic manipulator coupled to the LINAC. The robotic manipulator is configured to move the LINAC along seven or more degrees of freedom, at least one of the seven degrees of freedom being a redundant degree of freedom.

Seven or more degrees of freedom robotic manipulator having at least one redundant joint

A robotic treatment delivery system including a linear accelerator (LINAC), and a robotic arm coupled to the LINAC. The robotic arm is configured to move the LINAC along at least four rotational degrees of freedom and one substantially linear degree of freedom.

Robotic arm for a radiation treatment system

An apparatus and method for determining optimized path traversal in a radiation delivery system is described. In one embodiment, determining an optimized path traversal in a radiation delivery system involves providing a plurality of spatial nodes used in a treatment plan, where each of the plurality of spatial nodes represents a position of a radiation source made available to the treatment plan for delivering radiation to a target, identifying a number of unused spatial nodes, from among the plurality of spatial nodes, at which radiation is not delivered according to the treatment plan, and skipping travel to one or more of the unused nodes by the radiation source when administering the treatment plan. Other embodiments are also described.

Apparatus and method for determining an optimized path traversal for radiation treatment delivery system

A method and apparatus to select a correlation model from a plurality of correlation models to track target movement based on movement of an external marker.

Correlation model selection for internal target movement

Controlling X-ray imaging based on target motion

A method and apparatus to develop an advanced correlation model of movement of a target within a patient, which needs less data points and can adapt to the changes of respiration behavior automatically.

Constrained-curve correlation model

A method and apparatus to track non-linear internal target movement based on movement of an external marker.

Non-linear correlation models for internal target movement

A method for preventing an emission head or arm assembly from entering an exclusion zone. The method may include calculating a variable dimension exclusion zone of a radiosurgery system, and preventing at least one of the emission head or arm assembly from entering the variable dimension exclusion zone. The method may also include establishing a exclusion zone of a radiosurgery system, the radiosurgery system comprising an x-ray source having an emission head, moving the emission head during treatment of a patient, wherein the exclusion zone travels with the emission head, and detecting a presence and location of an object in the traveling exclusion zone.

Growing community of inventors

San Ramon, CA, United States of America

Sohail Sayeh