Patent GB693510A successfully refreshed from Google Patents.
Patent US4479198A successfully refreshed from Google Patents.
US5105817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic bloodstream imaging apparatus
Assignee: Toshiba Corp
•
Filing: 1989-06-06
•
Granted: 1992-04-21
•
Expires: 2009-06-06
Abstract
Abstract In the ultrasonic bloodstream imaging apparatus of the present invention, an ultrasonic wave is propagated into a subject, and a tomographic image of the subject is obtained. Then, a bloodstream data image is superimposed on the tomographic image and is displayed with color. A monochrome threshold value is set for tomographic image data obtained from an echo level of the ultrasonic wave. A color threshold value is set for bloodstream data obtained from the ultrasonic wave which has been affected by the Doppler effect. The echo level of the ultrasonic wave and the bloodstream data are compared with the monochrome threshold value and the color threshold value, respectively, and either a monochrome display mode or color display mode is selected based on the comparison result.
Inventors
- 👤 Takanobu Uchibori
- 👤 Mitsuhiro Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:04
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8906; G01S15/8979; G01S7/00; G01S7/52; G01S7/52017; G01S7/52053; G01S7/52057; G01S7/52071
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
An ultrasonic imaging apparatus comprising: ultrasonic transmitting and receiving means for transmitting an ultrasonic wave to a subject and receiving reflection echo of the ultrasonic wave from the subject; means for obtaining monochrome tomographic image information of the subject on the basis of the reflection echo from the subject; means for obtaining bloodstream velocity information from a Doppler shift signal obtained from the reflection echo of the subject; means for setting a monochrome threshold value according to said tomographic image information; means for setting a color threshold value according to said bloodstream image information; control means for selecting either a monochrome display mode of the tomographic image information or a color display mode of the bloodstream information, based on the comparison result of said tomographic image information and the monochrome threshold value and on the comparison result of said bloodstream velocity information and the color threshold value; and display means for displaying the display information in the mode selected by said control means.
Claim 2
Dependent Claim
163 words
An ultrasonic imaging apparatus comprising: ultrasonic transmitting and receiving means for transmitting an ultrasonic wave to a subject and receiving reflection echo of the ultrasonic wave from the subject; means for obtaining monochrome tomographic image information of the subject on the basis of the reflection echo from the subject; means for obtaining bloodstream velocity information from a Doppler shift signal obtained from the reflection echo of the subject; means for setting a monochrome threshold value according to said tomographic image information; means for setting a color threshold value according to said bloodstream image information; control means for selecting either a monochrome display mode of the tomographic image information or a color display mode of the bloodstream information, based on the comparison result of said tomographic image information and the monochrome threshold value and on the comparison result of said bloodstream velocity information and the color threshold value; and display means for displaying the display information in the mode selected by said control means.
Claim 3
Dependent Claim
105 words
The ultrasonic imaging apparatus according to claim 1, wherein said display means monochromically displays the tomographic image when the bloodstream velocity data is higher than said set color threshold value and the value of the tomographic image information is higher than said set monochrome threshold value, said display control means displays said bloodstream data in color when said bloodstream velocity data is higher than the color threshold value and the value of the tomographic image information is lower than the monochrome threshold value, and said display control means monochromically displays the tomographic image when said bloodstream velocity value is lower than said color threshold value.
Claim 4
Dependent Claim
24 words
The ultrasonic imaging apparatus according to claim 1, wherein at least one of said monochrome threshold value and said color threshold value is variable.
Claim 5
Dependent Claim
113 words
An ultrasonic imaging apparatus comprising: means for causing an ultrasonic wave to propagate through a subject; means for displaying a monochrome tomographic data image of the subject; and means for displaying a bloodstream data image in color; means for setting a monochrome threshold value according to the tomographic data; means for setting a maximum and a minimum color threshold value according to the bloodstream data; and display control means for displaying the bloodstream data in color only if the bloodstream data is greater than the minimum color threshold value, if the bloodstream data is less than the maximum color threshold value, and if the tomographic data is less than the monochrome threshold value.
Claim 6
Dependent Claim
113 words
An ultrasonic imaging apparatus comprising: means for causing an ultrasonic wave to propagate through a subject; means for displaying a monochrome tomographic data image of the subject; and means for displaying a bloodstream data image in color; means for setting a monochrome threshold value according to the tomographic data; means for setting a maximum and a minimum color threshold value according to the bloodstream data; and display control means for displaying the bloodstream data in color only if the bloodstream data is greater than the minimum color threshold value, if the bloodstream data is less than the maximum color threshold value, and if the tomographic data is less than the monochrome threshold value.
Claim 7
Dependent Claim
37 words
The ultrasonic imaging apparatus according to claim 4, wherein said maximum and minimum color threshold values are variable, and said display control means displays in color only a desired range of bloodstream having a given bloodstream velocity.
References Cited (Backward Citations)
US4205687A
Cited
US4641668A
Cited
US4641668B1
Cited
US4827942A
Cited
US4785402A
Cited
US4761740A
Cited
US4794932A
Cited
US4911171A
Cited
US4867167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-21 | 1995-10-21 | 1996-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-21 | 1999-10-21 | 2000-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-21 | 2003-10-21 | 2004-04-21 | $7700.00 | Window Closed / Lapsed |