Abstract:
The invention relates to a method and apparatus for generation of two-dimensional images using X-rays, proton tomography, and/or carbon ion tomography to form one or more independent and/or integrated three-dimensional images of a tumor, where the proton and carbon cation beams use common elements of a tumor treatment beam, such as an injector, accelerator, and/or beam transport device. A previously collected image of the tumor and/or a current/real-time image control slice is used in control of a multi-axes and/or a multi-field tumor irradiation system for cancer irradiation.
Abstract:
The invention comprises a multi-axis charged particle irradiation method and apparatus. The multi-axis controls includes separate or independent control of one or more of horizontal position, vertical position, energy control, and intensity control of the charged particle irradiation beam. Optionally, the charged particle beam is additionally controlled in terms of timing. Timing is coordinated with patient respiration and/or patient rotational positioning. Combined, the system allows multi-axis and multi-field charged particle irradiation of tumors yielding precise and accurate irradiation dosages to a tumor with distribution of harmful proximal distal energy about the tumor.
Abstract:
A charged particle cancer therapy system is used to accelerate an anion, such a C−, and to convert the anion to a cation, such as C6+, through use of one or more electron extraction subsystems. A first example of an electron extraction subsystem is a hydrogen gas electron stripping system. A second example of an electron extraction subsystem is a carbon foil electron stripping system. The resultant cation is accelerated in a synchrotron, transported along a beam-line, and targeted to a tumor resulting in ablation of the tumor.
Abstract:
A patient positioning/constraint apparatus and method of use thereof is described in combination with a charged particle cancer therapy system. In one embodiment, a patient is tilted about a longitudinal axis, such as rotation about a head-to-foot axis of the patient where the head-to-foot axis of the patient is horizontal. Optional side support constraints are optionally used to constrain radial movement of the patient on the tilted patient support. The side support constraints are optionally pre-formed to or coupled to a radially outer shape of an individual patient, such as the dexter or sinister side of the individual's head, arm, torso, hip, and/or leg. Patient tilt is optionally combined with rotation of the patient about a vertical axis, rotation of the entire patient about an axis not overlapped by the patient, and/or dynamic control of angles of incident charged particles directed by beamline magnets of the charged particle therapy system.
Abstract:
The invention relates to a method and apparatus for generation of two-dimensional images using X-rays, proton tomography, and/or carbon ion tomography to form one or more independent and/or integrated three-dimensional images of a tumor, where the proton and carbon cation beams use common elements of a tumor treatment beam, such as an injector, accelerator, and/or beam transport device. A previously collected image of the tumor and/or a current/real-time image control slice is used in control of a multi-axes and/or a multi-field tumor irradiation system for cancer irradiation.
Abstract:
The invention relates to a method and apparatus for control of a charged particle cancer therapy system. A treatment delivery control system is used to directly control multiple subsystems of the cancer therapy system without direct communication between selected subsystems, which enhances safety, simplifies quality assurance and quality control, and facilitates programming. For example, the treatment delivery control system directly controls one or more of: an imaging system, a positioning system, an injection system, a radio-frequency quadrupole system, a ring accelerator or synchrotron, an extraction system, a beam line, an irradiation nozzle, a gantry, a display system, a targeting system, and a verification system. Generally, the control system integrates subsystems and/or integrates output of one or more of the above described cancer therapy system elements with inputs of one or more of the above described cancer therapy system elements.
Abstract:
A fast magnet switching method and apparatus used to rapidly redirect cations, such as H+ or C6+, in a beam path, such as during or between treatment of individual volumes or voxels of a tumor of the patient, is described. Switching means include rapidly increasing or decreasing applied current to a coil about a magnet, which rapidly alters a magnetic field crossing the charged particle path and redirects a charged particle beam away from the patient, such as to a charged particle beam stop. Means to rapidly induce the current change include: (1) using a separate high voltage power supply and/or (2) opening a switch to redirect current through a resistor. In both cases, the rapid current change to the coil yields a rapid change the magnetic field and a corresponding rapid change in direction of the charged particles in the charged particle cancer therapy system.
Abstract:
A rotatable patient positioning apparatus and method of use thereof is described in combination with a rotatable magnet at a termination of a beamline arc. The rotatable patient positioning system optionally: (1) rotates a median of the person in place about a vertical axis and/or (2) rotates the entire person along a path around a vector, such as a vertical axis, where no part of the person intersects the vector. The rotatable targeting magnet rotates independently of a beamline arc at the end of the beamline arc, where the arc is after an accelerator and before the patient in a cancer therapy system. The rotatable targeting magnet directs the charged particle beam, such as vertically, using applied current to the targeting magnet while rotation of the magnet allows scanning across the tumor. The rotatable patient positioning system and targeting magnet combine to target the tumor in three-dimensions.
Abstract:
The invention comprises a rapid patient positioning system including a computer and motor controlled patient constraint system, such as a patient head and/or back support system having multiple adjustable degrees of freedom that facilitates accurate, precise, and rapid alignment of a patient relative to a support or table. The patient support system is preferably integrated with a rapid patient positioning system including steps of: positioning a patient relative to the table in a substantially vertical orientation, transitioning the table through a semi-vertical orientation, such as with a robot arm, and orientating the patient and the table in a substantially horizontal orientation, such as in a position for charged particle tumor therapy. Preferably, the robot arm is in common with an arm used to move the patient in traditional proton therapy.
Abstract:
The invention comprises a charged particle beam acceleration, extraction, and/or targeting method and apparatus used in conjunction with charged particle beam radiation therapy of cancerous tumors. Novel design features of a synchrotron are described. Particularly, turning magnets, edge focusing magnets, concentrating magnetic field magnets, winding and control coils, flat surface incident magnetic field surfaces, and extraction elements are described that minimize the overall size of the synchrotron, provide a tightly controlled proton beam, directly reduce the size of required magnetic fields, directly reduces required operating power, and allow continual acceleration of protons in a synchrotron even during a process of extracting protons from the synchrotron.