JPS58101615U - Ultrasound diagnostic equipment - Google Patents
Ultrasound diagnostic equipmentInfo
- Publication number
- JPS58101615U JPS58101615U JP19779581U JP19779581U JPS58101615U JP S58101615 U JPS58101615 U JP S58101615U JP 19779581 U JP19779581 U JP 19779581U JP 19779581 U JP19779581 U JP 19779581U JP S58101615 U JPS58101615 U JP S58101615U
- Authority
- JP
- Japan
- Prior art keywords
- level
- echo signal
- amplitude
- diagnostic equipment
- ultrasound diagnostic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はエコニ信号の周波数スペクトルを示すグラフ、
第２図は本考案の第１の実施例を示すブロック図、第３
図は第２図の動作を説明するための波形図、第４図及び
第５図は変形例をそれぞれ示すブロック図である。
Ｘ・・・超音波トランスデユーサ、２１・・・パルス駆
動回路、２２，４ｉ、５１・・・増幅器、４３．５３・
・・演算増幅器、４８．５８・・・加算器。
７
ｉ
９θ
ン −
＄５圏Figure 1 is a graph showing the frequency spectrum of the Econi signal.
Figure 2 is a block diagram showing the first embodiment of the present invention;
The figure is a waveform diagram for explaining the operation of FIG. 2, and FIGS. 4 and 5 are block diagrams showing modified examples, respectively. X... Ultrasonic transducer, 21... Pulse drive circuit, 22, 4i, 51... Amplifier, 43.53.
...Operation amplifier, 48.58...Adder. 7 i 9θ n − $5 area
Claims (1)
デユーサで受波してエコー信号を得る超音波診断装置に
おいて、前記エコー信号のレベルが所定のレベルを超え
たか否かを判別するレベル、判別回路と、エコー信号の
レベルが前記のレベルを超えたときにこのエコー信号を
振幅圧縮する振幅圧縮回路と、前記エコー信号のレベル
が前記のレベルを超えたが否かに応じて通過周波数帯域
特性を異ならせるフィルタとを備えたことを特徴とする
超音波診断装置。In an ultrasonic diagnostic apparatus that emits ultrasonic waves into a subject and receives the reflected waves with an ultrasonic transducer to obtain an echo signal, it is determined whether the level of the echo signal exceeds a predetermined level. a level discrimination circuit; an amplitude compression circuit that compresses the amplitude of the echo signal when the level of the echo signal exceeds the level; and an amplitude compression circuit that compresses the amplitude of the echo signal when the level of the echo signal exceeds the level; An ultrasonic diagnostic device characterized by comprising a filter that has different frequency band characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19779581U JPS58101615U (en) | 1981-12-28 | 1981-12-28 | Ultrasound diagnostic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19779581U JPS58101615U (en) | 1981-12-28 | 1981-12-28 | Ultrasound diagnostic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58101615U true JPS58101615U (en) | 1983-07-11 |
Family
ID=30110999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19779581U Pending JPS58101615U (en) | 1981-12-28 | 1981-12-28 | Ultrasound diagnostic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58101615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63147445A (en) * | 1986-12-10 | 1988-06-20 | アロカ株式会社 | Ultrasonic blood flowmeter |
-
1981
- 1981-12-28 JP JP19779581U patent/JPS58101615U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63147445A (en) * | 1986-12-10 | 1988-06-20 | アロカ株式会社 | Ultrasonic blood flowmeter |
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