Radiation therapy systems and methods
First Claim
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1. A radiation therapy system, comprising:
- an accelerator and beam transport system that generates a beam of particles, wherein the accelerator and beam transport system comprises focusing magnets along the path of the beam; and
a nozzle operable for aiming the beam toward an object, wherein the nozzle comprises;
scanning magnets operable for steering the beam toward different locations within the object; and
a beam energy adjuster configured to adjust the beam by affecting energies of the particles in the beam, wherein the beam energy adjuster comprises a range modulator comprising a plurality of arms extending from a hub, the arms having non-uniform thicknesses, wherein the range modulator is operable to rotate about the hub allowing the beam to pass through at least one of the arms to place different thicknesses of material in the path of the beam to change the energies of at least a portion of the particles and achieve a Spread Out Bragg Peak.
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Abstract
A radiation therapy system includes an accelerator and beam transport system that generates a beam of particles. The accelerator and beam transport system guides the beam on a path and into a nozzle that is operable for aiming the beam toward an object. The nozzle includes a scanning magnet operable for steering the beam toward different locations within the object, and also includes a beam energy adjuster configured to adjust the beam by, for example, placing different thicknesses of material in the path of the beam to affect the energies of the particles in the beam.
64 Citations
16 Claims
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1. A radiation therapy system, comprising:
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an accelerator and beam transport system that generates a beam of particles, wherein the accelerator and beam transport system comprises focusing magnets along the path of the beam; and a nozzle operable for aiming the beam toward an object, wherein the nozzle comprises; scanning magnets operable for steering the beam toward different locations within the object; and a beam energy adjuster configured to adjust the beam by affecting energies of the particles in the beam, wherein the beam energy adjuster comprises a range modulator comprising a plurality of arms extending from a hub, the arms having non-uniform thicknesses, wherein the range modulator is operable to rotate about the hub allowing the beam to pass through at least one of the arms to place different thicknesses of material in the path of the beam to change the energies of at least a portion of the particles and achieve a Spread Out Bragg Peak. - View Dependent Claims (2, 3)
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4. A method for radiotherapy treatment, the method comprising:
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accessing a first scan pattern for directing a first radiation beam from a first nozzle into a planning target volume, wherein the first scan pattern comprises a plurality of different target line segments in the planning target volume; generating parameters for configuring the first nozzle, wherein the parameters affect energies of charged particles in the radiation beam to create an adjusted beam that delivers a dose having a Spread Out Bragg Peak (SOBP) along a respective target line segment of the plurality of different target line segments; and delivering the dose within one second. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A radiation therapy method, comprising:
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tracking motion of a target volume; and delivering a dose along a target line segment in the target volume to coincide with a position of the target volume, wherein the dose is delivered in a period of time short enough to counter uncertainties in the position due to the motion of the target volume. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification