Charged particle - patient motion control system apparatus and method of use thereof

Patent metadata

Field	Value
Publication number	US-2016287907-A1
Application number	US-201615176025-A
Country	US
Kind code	A1
Filing date	Jun 7, 2016
Priority date	May 22, 2008
Publication date	Oct 6, 2016
Grant date	—

Abstract

The invention comprises a system for controlling a charged particle beam shape and direction relative to a controlled and dynamically positioned patient and/or an imaging surface, such as a scintillation plate of a tomography system and/or a first two-dimensional imaging system coupled to a second two-dimensional imaging system. Multiple interlinked beam/patient/imaging control stations allow safe zone operation and clear interaction with the charged particle beam system and the patient. Both treatment and imaging are facilitated using automated sequences controlled with a work-flow control system.

First claim

1 . An apparatus for directing positively charged particles at least into a patient, comprising:
an accelerator configured to accelerate the positively charged particles; a beam transport system configured to transport the positively charged particles from said accelerator to an output nozzle, said output nozzle supported by a gantry in a treatment room; and multiple patient interface controllers, comprising:
a first pendant, said first pendant tethered and moveable within the treatment room; and
a second pendant, said second pendant tethered and moveable within a control room by a window, said treatment room separated by said window from said control room,
wherein each of said first pendant and said second pendant provide an operator interface for control of: (1) the positively charged particles and (2) a position of a patient positioner configured to position the patient during use.

2 . The apparatus of claim 1 , wherein said second pendant comprises all controls, for control of the positively charged particles, of said first pendant.

3 . The apparatus of claim 2 , further comprising:
a treatment delivery control system communicatively linked to both said first pendant and said second pendant.

4 . The apparatus of claim 3 , said first pendant further comprising:
a flow process control unit, said process control unit configured to control all of:
a beam state modifier positioned in said output nozzle;
a patient positioner position;
an imaging system at least partially supported by said gantry; and
transport of the positively charged particles from said accelerator.

5 . The apparatus of claim 1 , said multiple patient interface controllers further comprising:
a first fixed position motion control system workstation.

6 . The apparatus of claim 5 , further comprising:
identical controls of said first pendant and said second pendant, wherein said identical controls comprise a subset of controls of said fixed position motion control system workstation.

7 . The apparatus of claim 6 , said multiple patient interface controllers further comprising
a second fixed position motion control system workstation, said first fixed position motion control system positioned in said control room, said second fixed position motion control system positioned in said treatment room, said first fixed position motion control system comprising redundant control, with said first pendant, of the positively charged particles.

8 . The apparatus of claim 1 , said first pendant further comprising:
a workflow process control selector comprising control of:
positioning the patient relative to the positively charged particles; and
an electromechanical positioner controlling position of a beam state modification insert proximate said output nozzle.

9 . The apparatus of claim 8 , said workflow process control selector further comprising control of:
imaging the patient with the positively charged particles; and using the positively charged particles to treat the patient.

10 . The apparatus of claim 9 , said workflow process control selector further comprising control of:
a first imaging element mounted to said gantry at a first location; a second imaging element mounted to said gantry at a second location, a first imaging beamline passing through said first location and the patient, a second imaging beamline passing through said second location and the patient, the first beamline and the second beamline forming an angle of greater than seventy degrees and less than one hundred ten degrees.

11 . The apparatus of claim 8 , said workflow process control selector further comprising:
position control of a tray retractable into said output nozzle, said tray comprising: a tray insert and an electromechanical communicator configured to connect to a receptor, said communicator configured with information abouit said tray insert.

12 . A method for directing positively charged particles at least into a patient, comprising the steps of:
accelerating the positively charged particles using an accelerator; transporting the positively charged particles from said accelerator to an output nozzle using a beam transport system; supporting said output nozzle using a gantry in a treatment room; and using multiple patient interface controllers, comprising:
a first pendant, said first pendant tethered and moveable within the treatment room; and
a second pendant, said second pendant tethered and moveable within a control room by a window, said treatment room separated by said window from said control room,
said step of using multiple patient interface controllers further comprising the step of: using each of said first pendant and said second pendant as an operator interface for control of: (1) the positively charged particles and (2) a position of a patient positioner configured to position the patient during use.

13 . The method of claim 12 , further comprising a step of:
a first operator using said first pendant in said treatment room in a first control step of loading a patient specific beam state alteration tray into said output nozzle.

14 . The method of claim 13 , further comprising the step of:
the first operator using said first pendant in said treatment room in a second control step of moving a patient positioner, constraining movement of the patient, into a treatment position.

15 . The method of claim 14 , further comprising the step of:
the first operator using said second pendant in said control room in a third control step of directing the positively charged particles into the patient.

16 . The method of claim 15 , further comprising the steps of:
the first operator using said second pendant in said control room in a fourth control step of imaging the patient; and using output from step of imaging the patient in repeating said step of directing the positively charged particles into the patient.

17 . The method of claim 12 , further comprising the step of:
using said first pendant in steps of:
imaging the patient with a first imaging beam passing through said gantry; and
imaging the patient with a second imaging beam passing through said gantry, the first imaging beam, the patient, and the second imaging beam forming an angle of greater than forty degrees.

18 . The method of claim 17 , further comprising the step of:
imaging the patient with the positively charged particles.

19 . The method of claim 18 , further comprising the step of:
using at least two imaging material emitting photons upon passage of the positively charged particles in identifying a vector of the positively charged particles.

20 . The method of claim 17 , the positively charged particles substantially following a part of the first imaging beam in said treatment room, said first imaging beam comprising X-rays.

Assignees

• Michaud Susan L
• Spotts Stephen L
• Bennett James P
• Lee W Davis

Inventors

• Michaud Susan L
• Spotts Stephen L
• Bennett James P
• Lee W Davis

Classifications

• A61B6/4258

  for detecting non x-ray radiation, e.g. gamma radiation (A61B6/037 takes precedence) · CPC title

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61N2005/1095

  Elements inserted into the radiation path within the system, e.g. filters or wedges · CPC title

• A61N5/1082

  having multiple beam rotation axes · CPC title

• G21K1/08

  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 title