JPS6486944A - Ultrasonic doppler diagnostic apparatus - Google Patents
Ultrasonic doppler diagnostic apparatusInfo
- Publication number
- JPS6486944A JPS6486944A JP24713187A JP24713187A JPS6486944A JP S6486944 A JPS6486944 A JP S6486944A JP 24713187 A JP24713187 A JP 24713187A JP 24713187 A JP24713187 A JP 24713187A JP S6486944 A JPS6486944 A JP S6486944A
- Authority
- JP
- Japan
- Prior art keywords
- transmitting
- circuit
- amplitude
- generating
- signal
- 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.)
- Granted
Links
Landscapes
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
PURPOSE:To obtain the optimum max. Doppler signal at all of the regions in an object to be examined without raising transmitting ultrasonic output, by mounting a means detecting the amplitude of a receiving reflected wave signal, a memory means, a means selecting the memory means, a control means for generating transmitting and receiving signals, a means generating a transmitting signal and a means generating a demodulation carrier wave. CONSTITUTION:The ultrasonic wave reflected from the reflecting body in an object to be examined is inputted to a receiving amplifier 4 and an amplitude detecting circuit 5 to be amplified. The amplitude detecting circuit 5 inputs the amplitude data relating to the max. amplitude obtained from the amplified signal to a control circuit 6 which in turn inputs a control signal generating the frequency corresponding to the max. amplitude of the reflected wave by the aforementioned amplitude data to a transmitting waveform generating circuit 1 and a demodulation carrier wave generating circuit 7 within a stored frequency variable range by a probe 3. The transmitting waveform generating circuit 1 alters transmitting frequency on the basis of the control signal from the control circuit 6 to input the same to the probe 3 through a transmitting amplifier 2 and the probe 3 transmits a wave at the altered frequency. The demodulation carrier wave generating circuit 7 is controlled by the control circuit 6 to generate a demodulation carrier wave having the same frequency as transmission frequency and Doppler signal detection circuit 8 detects only a Doppler signal to output the same.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24713187A JPS6486944A (en) | 1987-09-30 | 1987-09-30 | Ultrasonic doppler diagnostic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24713187A JPS6486944A (en) | 1987-09-30 | 1987-09-30 | Ultrasonic doppler diagnostic apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6486944A true JPS6486944A (en) | 1989-03-31 |
JPH0334725B2 JPH0334725B2 (en) | 1991-05-23 |
Family
ID=17158894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24713187A Granted JPS6486944A (en) | 1987-09-30 | 1987-09-30 | Ultrasonic doppler diagnostic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6486944A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7622623B2 (en) | 2005-09-02 | 2009-11-24 | Sud-Chemie Inc. | Catalytically inactive heat generator and improved dehydrogenation process |
-
1987
- 1987-09-30 JP JP24713187A patent/JPS6486944A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7622623B2 (en) | 2005-09-02 | 2009-11-24 | Sud-Chemie Inc. | Catalytically inactive heat generator and improved dehydrogenation process |
Also Published As
Publication number | Publication date |
---|---|
JPH0334725B2 (en) | 1991-05-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4378596A (en) | Multi-channel sonic receiver with combined time-gain control and heterodyne inputs | |
GB1357329A (en) | Detection apparatus | |
US4660565A (en) | Ultrasonic imaging apparatus using pulsed Doppler signal | |
AU3490595A (en) | Monitoring and imaging apparatus and method | |
EP0146073A2 (en) | Ultrasonic diagnosing apparatus | |
GB1268640A (en) | Acoustic detection apparatus | |
EP0384977A3 (en) | Apparatus for measuring propagation time of ultrasounds | |
DE68909524D1 (en) | TARGET DETECTOR. | |
US4598716A (en) | Doppler method and apparatus for measuring fluid motion | |
US5509416A (en) | Fetal heart detector | |
US3525976A (en) | Ultrasonic amplitude-doppler detector | |
GB2185321A (en) | Ultrasonic reflex transmission imaging method and apparatus with external reflector | |
JPS6486944A (en) | Ultrasonic doppler diagnostic apparatus | |
US5018528A (en) | Pulse Doppler ultrasonic diagnostic system | |
JP2719710B2 (en) | Ultrasonic pulse Doppler blood flow diagnostic device | |
JPS5748676A (en) | Specific fish detector | |
JPS6237980B2 (en) | ||
JPS648955A (en) | Ultrasonic endoscopic apparatus | |
RU94040848A (en) | Movement transducer using mechanical vibrations | |
JPS5618777A (en) | Range measuring apparatus | |
JPS6329263Y2 (en) | ||
JPS6459060A (en) | Nondestructive inspection instrument | |
JPH0395477A (en) | Ultrasonic detector | |
JPS6021810Y2 (en) | Frequency deviation detection device | |
JPH02109250U (en) |