Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
  • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
  • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
  • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
  • G01S7/5205—Means for monitoring or calibrating

Definitions

• the present invention relates to an ultrasonic diagnostic apparatus provided with an internal signal inspection unit. (Background technology)
• the plant ripple of the DC power supply voltage is measured, the operation of the power supply circuit is checked, and the time ⁇ gain ⁇ control (TGC) signal of the receiving amplifier and the time of the receiving filter * frequency control (TFC) It is necessary to measure the signals and check the TGC and TFC operations, respectively Conventionally, measurement of the internal signals of the ultrasonic diagnostic equipment uses various measuring instruments for signal measurement Had been done.
• TGC time ⁇ gain ⁇ control
• TFC time of the receiving filter * frequency control
• An object of the present invention is to eliminate the above-mentioned inconvenience and to provide an ultrasonic diagnostic apparatus having an internal signal inspection means, which is configured to also serve as a signal processing and display mechanism of the ultrasonic diagnostic apparatus.
• the internal signal is stored in the image memory by switching and inputting various internal signals of the ultrasonic diagnostic apparatus to the image memory storing the reflected wave reception signal by the switching circuit.
• the stored internal signal is displayed as an image on an image display device of the ultrasonic diagnostic apparatus, or the internal signal is inspected by the processor of the ultrasonic diagnostic apparatus. It is like that. [Brief description of drawings]
• FIG. 1 is a block diagram showing a configuration of an apparatus according to an embodiment of the present invention.
• FIG. 2 is a timing chart for explaining the operation of the apparatus shown in FIG. [Best mode for carrying out the invention]
• an apparatus includes an ultrasonic probe (hereinafter, referred to as a probe) 1, a transmission / reception circuit 2, a switching circuit 3, and an analog / digital conversion circuit (hereinafter, referred to as A / D converter).
• ⁇ D converter 4 image memory 5, image display device 6, processor (hereinafter referred to as CPU) 7, clock generation circuit (hereinafter referred to as clock circuit) 8, and internal signal detection circuit 9 Be composed.
• the transmission / reception circuit 2 includes a transmission circuit and a reception circuit
• the image display device 6 includes a digital / analog conversion circuit (hereinafter, referred to as a D * A converter) 61 and an image display tube (hereinafter, referred to as a CRT).
• the internal signal detection circuit 9 includes a voltage divider 91, an amplifier 92, and a plurality of signal conditioners such as a delay circuit 93. The type and number of these signal conditioners correspond to the type and number of internal signals.
• the output of the transmitting circuit of transmitting / receiving circuit 2 is connected to the input of probe 1, the output of probe 1 is connected to the input of the receiving circuit of transmitting / receiving circuit 2, and the output of the receiving circuit of transmitting circuit 2 is the first of switching circuit 3. Connected to the data input.
• a plurality of inputs of the internal signal detection circuit 9 are connected to the generation points of signals to be inspected inside the ultrasonic diagnostic apparatus.
• a plurality of outputs of the internal signal detection circuit 9 are connected to a plurality of data inputs of the switching circuit 3, respectively.
• the data output of the switching circuit 3 is connected to the input of the A / D converter 4, the output of the A / D converter 4 is connected to the data input of the image memory 5, and the first data output of the image memory 5 is the image.
• the input of the D / A converter 61 of the display device 6 is connected, and the output of the D / A converter 61 is connected to the input of the CRT 62.
• the second data output of the image memory 5 is connected to the input of the CPU 7.
• the first output of clock circuit 8 is connected to the clock signal input of The second output of the clock circuit 8 is connected to the clock signal input of the A / D converter 4, and the third output of the clock circuit 8 is connected to the clock signal input of the image memory 5.
• the first output of the CPU 7 is connected to the control signal input of the switching circuit 3, the second output of the CPU 7 is connected to the control signal input of the clock generation circuit 8, and the third output of the CPU 7 is Connected to address signal input of image memory 5.
• an internal signal detection circuit 9 and a switching circuit 3 are added to the usual configuration of the ultrasonic diagnostic apparatus, and connection is made accordingly, and the CPU 7 and the image memory 5 are connected. Are connected by a data path, and the CPU 7 reads out the storage plant of the image memory 5 to make a determination.
• This embodiment device operates in a normal operation mode and an internal signal inspection mode.
• a diagnostic image of the subject is displayed on the screen of the CRT 62 based on the reflection signal detected by the probe 1.
• the internal signal inspection mode the internal state is determined by the CPU 7 and / or the signal is displayed on the screen of the CRT 62 based on signals at various points inside the ultrasonic diagnostic apparatus.
• FIG. 2 showing the timing of drawing one sound ray of an ultrasonic image will be used.
• Reference numerals 1, 2, 4, 12, 13, 14, 14, 15 and 18 in FIG. 2 are reference numerals 1, 2, 4, 12, 12, 13, 14 and 15 in FIG.
• FIG. 9 is a signal waveform diagram of each part marked with x and affixed with 18.
• the output of the receiving section of the transmitting / receiving circuit 2 is selected by the switching circuit 3 under the control of the CPU 7.
• a pulse signal 14 for driving the ultrasonic transducer of the probe 1 is transmitted from the transmission circuit of the transmission / reception circuit 2, and the reception signal 1 from the probe 1 is given to the reception circuit of the transmission / reception circuit 2, and amplified by this circuit.
• the delay processing is performed, and the signal is converted into a digital signal 4 by the A / D converter 4 and written into the image memory 5.
• the write timing follows the timing clock 13.
• the digital signal 4 is written to the image memory 5.
• the drive pulse 14 is output each time the sound bran is switched, and each time the reflected signal corresponding thereto is subjected to reception processing and written into the image memory 5.
• the image memory 5 is complete with one frame of image data.
• the read output of the image memory 5 is converted into an analog video signal by the DA converter 61 and displayed on the CRT 62 screen.
• one output signal of the internal signal detection circuit 9 is selected by the switching circuit 3 under the control of the CPU 7.
• the voltage is increased or decreased by the circuit 92, and in some cases, a delay is provided by the delay circuit 93 so that the rise and fall of the signal fall within the operation period of the A / D converter 4.
• the ultrasonic diagnostic apparatus continues normal operation. Therefore, one sequence of internal signals per sound ray is output from the internal signal detection circuit 9.
• one of the internal signals selected by the switching circuit 3 is digitized by the A * D converter 4 in the same manner as the received signal for one ray of the probe 1 and written to the image memory 5.
• one internal signal is stored in the image memory 5 for one sequence.
• a plurality of output signals of the internal signal detection circuit 9 are written into the next image memory 5 corresponding to one sound ray.
• the CPU 7 temporarily stops the scanning of the sound signal, and during this stop period, the internal signals stored in the image memory 5 are output.
• Each data is read out by the address signal, and the read data is analyzed to determine whether there is any abnormality.
• a waveform corresponding to each internal signal stored in the image memory 5 is displayed on the screen of the CRT 62, and the operator makes a judgment based on a comparison between the displayed waveform and a normal waveform sample.
• the image memory 5 stores ⁇
• the stored value corresponding to the internal signal in which all the sound rays of the frame are in the first place is obtained. Therefore, the content of the image memory 5 is converted into an analog video signal by the D /
• a bright and dark striped pattern corresponding to the waveform of the internal signal is generated. Based on this pattern, the presence or absence of an abnormality can be determined by the operator.
• the correctness of the power supply voltage value, the ripple content and the waveform thereof, the TGC circuit, the TFC circuit Inspection of output waveforms such as can be performed using the measurement and analysis means built into the machine itself, so that the skilled technician is not required unlike the case where inspection is performed using a specific measuring instrument. Therefore, the operator of the ultrasonic diagnostic apparatus can easily diagnose the apparatus, and there is an effect that the apparatus can always be used in the best condition.
• the amount of hardware added for the internal signal test is small, and the circuit normally provided in the ultrasonic diagnostic apparatus is used as much as possible. Is obtained.

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Radar, Positioning & Navigation (AREA)
• Remote Sensing (AREA)
• Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
• Ultra Sonic Daignosis Equipment (AREA)
• Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Priority Applications (2)

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Publications (1)

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Family Applications (1)

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Citations (4)

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• 1983
  • 1983-12-27 JP JP58247382A patent/JPS60138483A/ja active Granted
• 1984
  • 1984-12-26 WO PCT/JP1984/000615 patent/WO1985002761A1/ja not_active Ceased
  • 1984-12-26 US US06/765,435 patent/US4694680A/en not_active Expired - Fee Related
  • 1984-12-26 DE DE8585900204T patent/DE3483788D1/de not_active Expired - Lifetime
  • 1984-12-26 EP EP85900204A patent/EP0204000B1/en not_active Expired

Patent Citations (4)

Non-Patent Citations (1)

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