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US3783251A
Expired / Lapsed
US
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Computer assisted radiation therapy machine
Assignee: Varian Medical Systems Inc
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Filing: 1970-11-27
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Granted: 1974-01-01
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Expires: 1990-11-27
Abstract
Abstract A computer assisted radiation therapy machine is disclosed. The machine includes a rotatable gantry having a radiation source portion which is rotatable about a patient treatment couch. Geometric and dose parameters of the machine for defining a prescribed treatment plan of radiation are stored in the memory of the computer. A readout and display means is provided for displaying the geometric and dose parameters of the defined radiation treatment plan. Editing and updating capability are provided for editing and updating the treatment plan with the cumulative radiation dose administered to each portal and the total cumulative dose administered to the patient. Each parameter of a proposed treatment plan is compared with permissible ranges of machine parameters stored in a memory to verify that the proposed treatment is within the permissible range of the machine.
Inventors
- 👤 J Pavkovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4476; A61B6/10; A61B6/102; A61B6/4429; A61B6/4435; A61B6/4441; A61N; A61N5/00; A61N5/01; A61N5/10; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/188; G05B19/4093; G05B19/40931; G05B19/40935; G21; G21K; G21K5/00; G21K5/10; H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/30; H05G1/38; H05G1/42; H05G1/44; A61N5/1048; A61N2005/1074; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34242; G05B2219/34376; G05B2219/35; G05B2219/35285; G05B2219/35307; G05B2219/36; G05B2219/36087; G05B2219/36153; G05B2219/36551; G05B2219/42; G05B2219/42205; G05B2219/42256; G05B2219/45; G05B2219/45169; G05B2219/49; G05B2219/49143
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
In a radiation therapy apparatus, couch means for supporting a patient to receive radiation, radiation source means for applying radiation to the patient, means for supporting and moving said radiation source means around said couch means, means for storing information defining geometric and radiation dose parameters of the radiation machine for defining a prescribed radiation treatment to be administered to the patient, means for reading out of said storage means and displaying to an operator the geometric and dose parameters defining the prescribed plan of radiation treatment, means for deriving an output representative of the dose of radiation actually administered to the patient from said source means in carrying out the defined plan of treatment, means for automatically editing and updating said storage means with the derived dose output by adding the derived dose output to the cumulative total of previously derived dose outputs, if any, administered to the patient and stored in said storage means, to obtain an updated cumulative total radiation dose output in said storage means.
Claim 2
Dependent Claim
169 words
In a radiation therapy apparatus, couch means for supporting a patient to receive radiation, radiation source means for applying radiation to the patient, means for supporting and moving said radiation source means around said couch means, means for storing information defining geometric and radiation dose parameters of the radiation machine for defining a prescribed radiation treatment to be administered to the patient, means for reading out of said storage means and displaying to an operator the geometric and dose parameters defining the prescribed plan of radiation treatment, means for deriving an output representative of the dose of radiation actually administered to the patient from said source means in carrying out the defined plan of treatment, means for automatically editing and updating said storage means with the derived dose output by adding the derived dose output to the cumulative total of previously derived dose outputs, if any, administered to the patient and stored in said storage means, to obtain an updated cumulative total radiation dose output in said storage means.
Claim 3
Dependent Claim
46 words
The apparatus of claim 1 wherein said means for displaying and reading out of said storage means the parameters of a prescribed plan of treatment includes, means for reading out the edited and updated cumulative total radiation dose output from said edited and updated storage means.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein said storage means and said editing and updating means includes, a programmed general purpose computer.
Claim 5
Dependent Claim
25 words
The apparatus of claim 3 wherein said readout and display means includes, cathode ray tube terminal means interactively coupled to said general purpose computer means.
Claim 6
Dependent Claim
39 words
The apparatus of claim 3 wherein said readout and display means includes, teletype terminal means interactively coupled to said programmed general purpose computer means for printing out the edited and updated treatment plan parameter stored in said storage means.
Claim 7
Dependent Claim
36 words
The apparatus of claim 1 wherein said means for deriving an output representative of the dose of radiation actually administered to the patient includes, dosimeter means disposed in the beam of radiation administered to the patient.
Claim 8
Dependent Claim
134 words
The apparatus of claim 1 including, programmed general purpose computer means having a memory portion, and wherein said storage means for storing the geometric and dose parameter information defining a prescribed radiation treatment plan includes said memory of said computer means, and including second information storage means for storing geometric and dose parameter information defining a prescribed radiation treatment plan for a given patient, means for reading the treatment plan information stored in said second storage means into said memory portion of said computer means, means for recording information in said second information storage means, and said computer means being programmed to read the edited and updated treatment plan information from said memory portion of said computer to said recording means for recording the updated treatment plan information in said second information storage means.
Claim 9
Dependent Claim
16 words
The apparatus of claim 7 wherein said second storage means includes, an information storage tape medium.
Claim 10
Dependent Claim
104 words
The apparatus of claim 1 wherein, said storage means also includes means for storing information defining permissible ranges of values of treatment plan parameters for radiation treatment plans to be administered to the patient, means for comparing a proposed radiation treatment plan parameter against the respective parameter of the range of permissible values to derive an interlock output if the valve of the proposed machine parameter is outside the respective range of permissible parameter values, and means responsive to the interlock output to prevent transfer of the out-of-range proposed machine parameter into the prescribed set of treatment plan parameters stored in said storage means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |