Patent US5553618A successfully refreshed from Google Patents.
US5553618A
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US
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Method and apparatus for ultrasound medical treatment
Assignee: Toshiba Corp
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Filing: 1994-03-14
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Granted: 1996-09-10
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Expires: 2014-03-14
Abstract
Abstract An ultrasound medical treatment system capable of determining the hot spot at high spatial resolution, and preventing the displacement of the hot spot from the focal point. In the system, the imaging device for obtaining image data of a treatment portion containing a treatment target and an irradiation device for applying radiation onto the treatment target are controlled in such a manner that the imaging device is controlled to obtain hot spot detection image data after the irradiation device is controlled to apply radiation at a prescribed level, so that a hot spot indicating a change due to a temperature change caused by the radiation at the prescribed level can be detected from the hot spot detection image data. The irradiation device is then controlled to apply a treatment radiation at a treatment level higher than the prescribed level according to the detected hot spot.
Inventors
- 👤 Takuji Suzuki
- 👤 Satoshi Aida
- 👤 Katsuhiko Fujimoto
- 👤 Mariko Shibata
- 👤 Yoshiharu Ishibashi
- 👤 Mamoru Izumi
- 👤 Shiroh Saitoh
- 👤 Kazuya Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:43
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; A; A61; A61B; A61B5/00; A61B5/05; A61B5/055; A61N; A61N7/00; A61N7/02; G01R33/44; G01R33/48; G01R33/4804; A61B17/00; A61B2017/00681; A61B2017/00694; A61B2017/00707; A61B2017/00716; A61B90/00; A61B90/36; A61B90/37; A61B2090/374; A61B90/50; A61B2090/5025; A61B2090/504; A61B6/00; A61B6/50; A61B6/506; A61B8/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
137 words
A medical treatment apparatus, comprising: an imaging device to obtain image data of a treatment portion containing a treatment target; an irradiation device to apply radiation onto the treatment target; and a control device to control said imaging device and said irradiation device, said control device controlling said irradiation device to apply the radiation at a prescribed level and then controlling said imaging device to obtain hot spot detection image data, said control device detecting from the hot spot detection image data a hot spot indicating a change due to a temperature change caused by the radiation at the prescribed level, and said control device controlling said irradiation device to adjust a focal point of said irradiation device according to the detected hot spot and applying treatment radiation at a treatment level higher than the prescribed level.
Claim 2
Dependent Claim
137 words
A medical treatment apparatus, comprising: an imaging device to obtain image data of a treatment portion containing a treatment target; an irradiation device to apply radiation onto the treatment target; and a control device to control said imaging device and said irradiation device, said control device controlling said irradiation device to apply the radiation at a prescribed level and then controlling said imaging device to obtain hot spot detection image data, said control device detecting from the hot spot detection image data a hot spot indicating a change due to a temperature change caused by the radiation at the prescribed level, and said control device controlling said irradiation device to adjust a focal point of said irradiation device according to the detected hot spot and applying treatment radiation at a treatment level higher than the prescribed level.
Claim 3
Dependent Claim
50 words
The apparatus of claim 1, wherein said control device controls said imaging device to obtain reference image data before said irradiation device applies the radiation at the prescribed level, and said control device detects the hot spot by comparing the hot spot detection image data with the reference image data.
Claim 4
Dependent Claim
37 words
The apparatus of claim 1, wherein said control device obtains the hot spot by extracting a portion of the hot spot detection image data that exceeds a prescribed threshold for said change due to the temperature change.
Claim 5
Dependent Claim
29 words
The apparatus of claim 1, wherein said control device controls said irradiation device to apply the radiation at the prescribed level so as not to damage the treatment target.
Claim 6
Dependent Claim
77 words
The apparatus of claim 4, wherein said control device controls said irradiation device to apply the radiation at the prescribed level for which a survival rate defined by the following equation is greater than a prescribed value: ##EQU2## where T.sub.φ is a temperature before the radiation, ΔT(t) is a time profile of a temperature change, Ea is an empirical activation energy, A is a proportional constant, R is a gas constant, and S is the survival rate.
Claim 7
Independent Claim
121 words
A method of medical treatment, comprising the steps of: applying radiation at a prescribed level onto a treatment target, said applying step being carried out by an irradiation device; obtaining hot spot detection image data of a treatment portion containing the treatment target after said applying step, said obtaining step being carried out by an imaging device; detecting a hot spot from the hot spot detection image data, the hot spot indicating a change due to a temperature change caused by the radiation at the prescribed level; and carrying out a treatment by adjusting a focal point of said irradiation device in response to the detected hot spot and applying treatment radiation at a treatment level higher than the prescribed level.
Claim 8
Independent Claim
121 words
A method of medical treatment, comprising the steps of: applying radiation at a prescribed level onto a treatment target, said applying step being carried out by an irradiation device; obtaining hot spot detection image data of a treatment portion containing the treatment target after said applying step, said obtaining step being carried out by an imaging device; detecting a hot spot from the hot spot detection image data, the hot spot indicating a change due to a temperature change caused by the radiation at the prescribed level; and carrying out a treatment by adjusting a focal point of said irradiation device in response to the detected hot spot and applying treatment radiation at a treatment level higher than the prescribed level.
Claim 9
Dependent Claim
40 words
The method of claim 6, further comprising the step of obtaining reference image data before said applying step, and wherein said detecting step detects the hot spot by comparing the hot spot detection image data with the reference image data.
Claim 10
Dependent Claim
41 words
The method of claim 6, wherein said detecting step detects the hot spot by extracting a portion of the hot spot detection image data exceeding a prescribed threshold for said change due to the temperature change caused by said applying step.
Claim 11
Dependent Claim
29 words
The method of claim 6, wherein the prescribed level at which the radiation is applied at said applying step is a level that does not damage the treatment target.
Claim 12
Dependent Claim
78 words
The method of claim 9, wherein the prescribed level at which the radiation is applied at said applying step is a level for which a survival rate defined by the following equation is greater than a prescribed value: ##EQU3## where T.sub.φ is a temperature before the radiation, ΔT(t) is a time profile of a temperature change, Ea is an empirical activation energy, A is a proportional constant, R is a gas constant, and S is the survival rate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-10 | 2000-03-11 | 2000-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-10 | 2004-03-11 | 2004-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-10 | 2008-03-11 | 2008-09-10 | $7700.00 | Window Closed / Lapsed |