Particle arc therapy
AssigneeWilliam Beaumont Hospital
InventorsXuanfeng Ding, Xiaoqiang Li, Di Yan
Life of this patent
Estimating the term…
Abstract
A method of delivering a particle beam at a target is disclosed. In implementations, the particle beam is delivered from an output device at a plurality of control points and the method comprises the step of delivering a substantially continuous particle beam about the plurality of control points.
Claims36
A method of delivering a particle beam at a target, wherein the particle beam is delivered from an output device at a plurality of control points, the method comprising:
- delivering a substantially continuous particle beam about the plurality of control points;
- identifying an initial set of control points;
- providing a first group of optimized beams, wherein each optimized beam of the first group of optimized beams is configured to be output at a first control point and steered towards one or more energy layers that are associated with one or more monitor unit (MU) reducing energy layers among the first group of optimized beams associated with an MU that is lower than a threshold MU;
- providing a second group of optimized beams, each optimized beam of the second group of optimized beams configured to be output at the first control point and having a reduced number of energy layers;
- increasing a number of the initial control points;
- and
- maintaining a total number of energy layers equal to or less than a total number of energy layers associated with the initial control points during movement of the beam between the plurality of control points, wherein increasing the number of initial control points comprises adding one or more adjacent control points to each initial control point, the adjacent control point having a fraction number of the total energy layers or MU of the initial control point.
A method of delivering a particle beam at a target, wherein the particle beam is delivered from an output device at a plurality of control points, the method comprising:
- delivering a substantially continuous particle beam about the plurality of control points;
- pre-defining energy layers based on one or both of the control points and a control point sampling frequency;
- and
- sorting the energy layers.
A method of delivering a particle beam at a target, wherein the particle beam is delivered from an output device at a plurality of control points, the method comprising:
- delivering a substantially continuous particle beam about the plurality of control points;
- optimizing the delivery of the particle beam among the control points by utilizing at least one of a (i) a spot reduction mechanism to remove one or more spots about target that have a MU at or below a MU threshold, (ii) an energy layer reduction to remove one or more energy layers about target, that have a MU at or below a MU threshold, (iii) a control point re-sampling, (iv) energy layer re-distribution among the control points, (v) a spot delivery sequence re-distribution or re-organization or a combination thereof, wherein the MU threshold is defined as being equal to or less than the bottom ten percent (10%) of one, some or all of (i) spot MUs in a plan;
- (ii) energy layers;
- (iii) impact angles;
- and (iv) a combination thereof.
A method of delivering a particle beam at a target, wherein the particle beam is delivered from an output device at a plurality of control points, the method comprising:
- delivering a substantially continuous particle beam about the plurality of control points;
- optimizing the delivery of the particle beam among the control points by utilizing at least one of a (i) a spot reduction mechanism to remove one or more spots about target that have a MU at or below a MU threshold, (ii) an energy layer reduction to remove one or more energy layers about target, that have a MU at or below a MU threshold, (iii) a control point re-sampling, (iv) energy layer re-distribution among the control points, (v) a spot delivery sequence re-distribution or re-organization or a combination thereof, wherein the spot reduction mechanism removes the low MU spots or lines sequentially, simultaneously or randomly during the step of optimizing such that it removes an amount equal to or less than ten percent (10%) of such spots after energy layer filtration or integrated with the energy layer filtration.
Dependencies are inferred from the claim text.