Charged particle translation slide control apparatus and method of use thereof

• US 9,737,734 B2
• Filed: 03/17/2016
• Issued: 08/22/2017
• Est. Priority Date: 05/22/2008
• Status: Active Grant

• Current Assignee: ProTom International Holding Corporation
• Original Assignee: Stephen L. Spotts, Susan L. Michaud
• Inventors: Michaud, Susan L., Spotts, Stephen L.
• Primary Examiner(s): MCCORMACK, JASON L
• Application Number:
  US15/073,471
• Publication Number:
  US 20160199670A1
• Time in Patent Office: 523 Days
• Field of Search: 2504921, 2504922, 25049221, 2504923, 250281, 250282, 250288
• CPC Class Codes: A61N 2005/1087 Ions; Protons
• CPC Class Codes: A61N 2005/1095 Elements inserted into the radiation path within the system, e.g. filters or wedges
• CPC Class Codes: A61N 2005/1096 Elements inserted into the radiation path placed on the patient, e.g. bags, bolus, compensators
• CPC Class Codes: A61N 5/1077 Beam delivery systems
• CPC Class Codes: G21K 1/08 Deviation, concentration or focusing of the beam by electric or magnetic means electron-optical arrangements in electric discharge tubes H01J29/46; details, e.g. electric or magnetic deviating means for direct voltage accelerators or in accelerators using single pulses H05H5/02; arrangements for injecting particles into orbits H05H7/08; arrangements for ejecting particles from orbits H05H7/10
• CPC Class Codes: G21K 1/10 Scattering devices; Absorbing devices; Ionising radiation filters
• CPC Class Codes: G21K 5/04 with beam-forming means
• CPC Class Codes: H01J 35/14 Arrangements for concentrating, focusing, or directing the cathode ray

Abstract

The invention comprises a system for patient specific control of charged particles in a charged particle beam path using one or more trays inserted into the charged particle beam path, such as at the exit port of a gantry nozzle in close proximity to a tumor of a patient. Each tray holds an insert, such as a patient specific insert for controlling the energy, focus depth, and/or shape of the charged particle beam. Examples of inserts include a range shifter, a compensator, an aperture, a ridge filter, and a blank. Trays in a tray assembly are optionally retracted into an output nozzle of a charged particle cancer treatment system. Optionally and preferably, each tray communicates a held and positioned insert to a main controller of the charged particle cancer therapy system.

Claims

1. A method for adjusting a charged particle beam traversing along a charged particle beam path, comprising the steps of:

providing a charged particle system, comprising;

an accelerator;

a beamline from said accelerator to an output nozzle; and

a tray assembly;

longitudinally retracting said tray assembly along the charged particle beam path into said output nozzle;

inserting a first tray into a first slot of said tray assembly, said first tray configured with a first insert comprising a patient specific charged particle beam adjustment material;

inserting a second tray into a second slot of said tray assembly;

attaching a second insert to said second tray prior to said step of longitudinally retracting;

inserting a third tray into a third slot of said tray assembly;

attaching a third insert to said third tray prior to said step of longitudinally retracting; and

after said step of inserting said third tray, performing said step of longitudinally retracting said tray assembly along the charged particle beam path into said output nozzle, said step of longitudinally retracting further comprising the step of;

prior to operation of said charged particle system, moving said first slot and not said second slot or said third slot of said tray assembly into said output nozzle,

wherein each of said first insert, said second insert, and said third insert comprise any of;

a patient specific range shifter element comprising a standard thickness of a charged particle beam slowing material;

a patient specific ridge filter, comprising a charged particle beam focusing element; and

a patient specific blocking material comprising an aperture therethrough, said blocking material blocking the charged particle beam outside of the aperture.

2. The method of claim 1, said step of inserting further comprising the steps of:

establishing a first electromechanical connection between a first identifier element, affixed to said first tray, and a first receiver, affixed to said tray assembly; and

said first identifier element communicating at least one property of said first insert to said charged particle system via said first electromechanical connection.

3. The method of claim 2, said step of communicating further comprising the step of:

identifying a patient specific insert installed in said first tray using information digitally stored in said first identifier.

4. The method of claim 2, said step of communicating further comprising the step of:

identifying a blank insert installed in said first tray using information digitally stored in said first identifier.

5. The method of claim 2, said step of communicating further comprising the step of:

identifying all of;

occupancy, type of insert, and slot position to a main controller of said charged particle system.

6. The method of claim 1, said step of longitudinally retracting further comprising the step of:

moving both said first slot and said second slot and not moving said third slot of said tray assembly into a zone circumferentially defined by said output nozzle.

8. The method of claim 2, said step of communicating further comprising the step of:

directly communicating with a main controller of said charged particle system without communication through a sub-assembly not directly in communication with said main controller.

7. A method for adjusting a charged particle beam traversing along a charged particle beam path, comprising the steps of:

providing a charged particle system, comprising;

an accelerator;

a beamline from said accelerator to an output nozzle; and

a tray assembly;

longitudinally retracting said tray assembly along the charged particle beam path into said output nozzle;

inserting a first tray into a first slot of said tray assembly, said first tray configured with a first insert comprising a patient specific charged particle beam adjustment material;

inserting a second tray into a second slot of said tray assembly;

attaching a second insert to said second tray prior to said step of longitudinally retracting;

inserting a third tray into a third slot of said tray assembly;

attaching a third insert to said third tray prior to said step of longitudinally retracting;

after said step of inserting said third tray, performing said step of longitudinally retracting said tray assembly along the charged particle beam path into said output nozzle; and

said step of longitudinally retracting said tray assembly substantially removing steric limitation of said tray assembly between said output nozzle and a patient,

wherein each of said first insert, said second insert, and said third insert comprise any of;

a patient specific range shifter element comprising a standard thickness of a charged particle beam slowing material;

a patient specific ridge filter, comprising a charged particle beam focusing element; and

a patient specific blocking material comprising an aperture therethrough, said blocking material blocking the charged particle beam outside of the aperture.

9. An apparatus for adjusting a charged particle beam traversing a charged particle beam path, comprising:

a charged particle system, comprising;

an accelerator;

a beamline from said accelerator to an output nozzle; and

a tray assembly longitudinally retractable along the charged particle beam path into said output nozzle; and

a first tray insertable into a first slot of said tray assembly, said first tray configured with a patient specific charged particle beam adjustment insert during use; and

a second patient specific tray insertable into a second slot of said tray assembly,

wherein said first slot comprises a first height at least ten percent larger than said second slot, wherein a difference in slot height removes errors associated with a first tray intended for said first slot being inserted into said second slot.

10. The apparatus of claim 9, further comprising:

a third patient specific tray insertable into a third slot of said tray assembly.

11. The apparatus of claim 10, said first slot further comprising:

a radial orientation;

relative to the charged particle beam path through said output nozzle; and

for insertion of said first patient specific tray.