# US 10,118,052 B2 · Charged particle cancer therapy installation system

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- Number: US 10,118,052 B2
- Document ID: US10118052B2
- Status: Granted
- Kind: B2
- Application number: 15/727,596
- Filed: 2017-10-07
- Published: 2018-02-01
- Granted: 2018-11-06
- Earliest claimed: 2016-05-27
- Applicants: Stephen L. Spotts; James P. Bennett; W. Davis Lee
- Inventors: Stephen L. Spotts; James P. Bennett; W. Davis Lee
- Web page: https://patentgrep.com/patent/US10118052B2

## CPC

- A61N 5/103: {Treatment planning systems}
- A61B 6/032: {Transmission computed tomography [CT]}
- A61B 6/4085: {Cone-beams}
- A61B 6/4258: {for detecting non x-ray radiation, e.g. gamma radiation (A61B6/037 takes precedence)}
- A61B 6/4266: {characterised by using a plurality of detector units (A61B6/4014 takes precedence)}
- A61B 6/4435: {the source unit and the detector unit being coupled by a rigid structure}
- A61N 5/1037: {taking into account the movement of the target, e.g. 4D-image based planning}
- A61N 5/1048: {Monitoring, verifying, controlling systems and methods}
- A61N 5/1049: {for verifying the position of the patient with respect to the radiation beam}
- A61N 5/1067: {in real time, i.e. during treatment}
- A61N 5/1077: {Beam delivery systems}
- A61N 5/1082: {having multiple beam rotation axes}
- G21K 1/10: Scattering devices; Absorbing devices; Ionising radiation filters
- G21K 5/04: with beam-forming means
- A61B 6/5205: {involving processing of raw data to produce diagnostic data}
- A61N 5/01: Devices for producing movement of radiation source during therapy {(A61N5/1077 takes precedence)}
- A61N 5/1039: {using functional images, e.g. PET or MRI}
- A61N 5/1042: {with spatial modulation of the radiation beam within the treatment head}
- A61N 5/1069: {Target adjustment, e.g. moving the patient support}
- A61N 5/107: {in real time, i.e. during treatment}
- A61N 2005/1051: {using an active marker}
- A61N 2005/1054: {using a portal imaging system}
- A61N 2005/1061: {using an x-ray imaging system having a separate imaging source}
- A61N 2005/1087: {Ions; Protons}
- A61N 2005/1095: {Elements inserted into the radiation path within the system, e.g. filters or wedges}
- A61N 2005/1097: {Means for immobilizing the patient}
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G21K: HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES

## Abstract

The invention comprises a method for installing a proton based cancer therapy system in a hospital related brownfield building, comprising the steps of: (1) transporting gantry system elements to a basement of the brownfield, the gantry system comprising: a rotatable gantry support; a gantry counterweight; a rotatable gantry arm, and a main bearing, comprising: a diameter of at least ten feet, a first circular segment, comprising a first arc-to-chord section, a second circular segment, comprising a second arc-to-chord section, and an intermediate section; (2) transporting through a pre-existing elevator shaft in the hospital related brownfield building the main bearing in a disassembled form; and (3) after the step of transporting through the pre-existing elevator shaft, assembling the gantry system on the ground floor, the step of assembling comprising attaching the first circular segment of the main bearing to the second circular segment of the main bearing using the intermediate section.

## Claims

### Claim 1

A method for installing a cancer therapy system in a hospital related brownfield building, comprising the steps of:
transporting sectional elements of a gantry system from a first floor of the hospital related brownfield building to a lower floor, said gantry system comprising:
a set of bearings;
a rotatable gantry support, rotatable on said set of bearings, comprising a first rotatable gantry section and a second rotatable gantry section;
a gantry counterweight comprising a first counterweight section and a second counterweight section, said gantry counterweight attachable to said rotatable gantry support;
a rotatable gantry arm, comprising: a first rotatable arm section attachable to said rotatable gantry support; a second rotatable arm section, attachable to said first rotatable arm section, circumferentially surrounding a section of a charged particle beamline; and a third rotatable section attachable to at least one of said set of bearings;
said set of bearings comprising a main bearing, said main bearing comprising:
a diameter of at least ten feet;
a first circular segment, comprising a first arc-to-chord section;
a second circular segment, comprising a second arc-to-chord section; and
an intermediate section;
transporting through a pre-existing elevator shaft in the hospital related brownfield building said main bearing in a disassembled form; and
after said step of transporting through said pre-existing elevator shaft, assembling said gantry system on the lower floor, said step of assembling comprising attaching said first circular segment of said main bearing to said second circular segment of said main bearing using said intermediate section.

### Claim 2 (depends on 1)

The method of claim 1, further comprising the step of:
assembling a beam transport line from a synchrotron, along said rotatable gantry section, and through said second rotatable gantry arm section, wherein all turning magnets of said synchrotron and said beam transport line comprise a single magnet design.

### Claim 3 (depends on 2)

The method of claim 2, further comprising the step of:
installing a first time of flight detection panel between a second time of flight detection panel and a tumor treatment position of said cancer therapy system.

### Claim 4 (depends on 1)

The method of claim 1, further comprising the step of:
entering a treatment room, of said cancer therapy system, through said main bearing.

### Claim 5 (depends on 4)

The method of claim 4, further comprising the step of:
installing a first time of flight detection panel opposite a patient imaging position from an exit nozzle position positionable by said rotatable gantry arm.