JP2010264044A - Ultrasonograph and adapter device for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique to carry out the adjustment of a transmission property in a wide range of frequencies in transmitting reflective waves of ultrasound (echoes) converted into electrical signals through a cable in an ultrasonograph. <P>SOLUTION: The ultrasonograph (10) includes: a probe (20) which emits ultrasound to the inside of a subject and receives the reflective waves to convert them into the electrical signals; the cable (21, 32) which transmits the electrical signals to a detecting part (43) for detecting the electrical signals; an image generating part (46) which generates images based on the detected electrical signals; and an adjustment circuit (33) which is a parallel LC circuit connected to the cable (21, 32) and has adjustable inductances (L) and capacitance (c). <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an ultrasonic diagnostic apparatus that irradiates ultrasonic waves into a subject through a probe and performs signal processing on the reflected wave (echo) to obtain information in the subject such as a tomographic image of an organ and blood flow velocity, and It relates to the adapter device.

  The ultrasonic diagnostic apparatus is a B mode for observing a tomographic image of a soft tissue of a living body by irradiating an ultrasonic wave excellent in straightness while scanning in a fan shape, and a tissue image in one direction among the scanning lines along the time axis. Various modes such as M mode for observing morphological changes over time such as heart and blood vessels in detail by arranging in parallel, Doppler mode for acquiring blood flow spectrum and spatial spread using Doppler effect ing.

  As described above, since the ultrasonic diagnostic apparatus is a medical diagnostic apparatus that is low in invasiveness to the human body and capable of observing images in real time, it has a wide range of applications including heart, abdomen, mammary gland, urology, obstetrics, gynecology. Spanning different areas.

  In the ultrasonic diagnostic apparatus, probes are appropriately selected according to the mode to be executed and the region of interest of the subject, and many different types of probes optimized for various diagnoses are prepared.

  For this reason, an adapter is provided that provides compatibility of probe connections so that a plurality of owned probes can be shared among ultrasonic diagnostic apparatuses having different interfaces.

  However, when the probe is connected to the ultrasonic diagnostic apparatus via an adapter, the transmission line characteristics are not matched and expected performance due to the combination of different systems and the addition of an adapter. There is a problem that cannot be obtained.

  As a conventional technique for solving such a problem, a technique for adjusting a transmission line characteristic by arranging a variable inductance in parallel in an adapter connected between an ultrasonic diagnostic apparatus and a probe is known (for example, Patent Document 1).

JP-A-4-146732

  However, since the conventional technique is only adjusting the parallel inductance, the improvement of the transmission line characteristics is limited to a narrow frequency band near the resonance frequency determined by the relationship with the parallel capacitance component parasitic on the transmission line.

  For this reason, the conventional technique has a problem that the adjustment range of the transmission line characteristic is narrow, and is not suitable for, for example, the B-mode characteristic adjustment that requires a broadband signal.

  The present invention has been made in consideration of such circumstances, and an ultrasonic wave capable of adjusting transmission characteristics over a wide frequency band when an ultrasonic reflected wave (echo) is converted into an electric signal and transmitted through a cable. An object of the present invention is to provide a diagnostic device and an adapter device thereof.

  An ultrasonic diagnostic apparatus according to the present invention includes a probe that irradiates an object with ultrasonic waves, receives a reflected wave thereof, and converts it into an electrical signal; a cable that transmits the electrical signal converted by the probe; A detection unit for detecting the electrical signal transmitted to the cable; an image generation unit for processing the electrical signal detected by the detection unit to generate an image; and an LC parallel circuit connected to the cable, the inductance of which And an adjustment circuit capable of adjusting at least one of the capacitances.

  An adapter device according to the present invention is an adapter provided in an ultrasonic diagnostic apparatus that detects an electrical signal converted from a reflected wave of an ultrasonic wave irradiated in a subject and generates an image in the subject. In the apparatus, a port connected to a terminal of a first cable that is connected to a probe that irradiates the ultrasonic wave and receives the reflected wave and transmits the electric signal, and transmits the electric signal from the port to the detection unit. A second cable to be connected, an LC parallel circuit connected to the second cable, an adjustment circuit capable of adjusting at least one of its inductance and capacitance, and the adjustment circuit being accommodated and detachable from the ultrasonic diagnostic apparatus And an adapter main body configured.

  According to the present invention, when an object is irradiated with ultrasonic waves and the reflected wave (echo) is subjected to signal processing to obtain information in the object, an electrical signal converted from the reflected wave (echo) has a wide frequency band. The transmission characteristics can be adjusted over a wide range. Therefore, an ultrasonic diagnostic apparatus that obtains in-subject information with high reliability and high quality is provided.

1 is a perspective view of an ultrasonic diagnostic apparatus according to an embodiment of the present invention. The block diagram explaining the internal function of the ultrasound diagnosing device concerning an embodiment. The block diagram of the coaxial cable which is a structural unit of the cable applied to the ultrasound diagnosing device which concerns on embodiment. The circuit diagram of the adjustment circuit applied to the ultrasound diagnosing device concerning an embodiment. The conceptual diagram which shows the transmission line of the electrical signal (echo signal) of a reflected wave. The equivalent circuit in each structure on the transmission line shown by FIG. The equivalent circuit in the whole transmission line shown in FIG.5 and FIG.6. The equivalent circuit of a parallel component among the whole equivalent circuits of the transmission line shown in FIG. 7, and the derivation formula of the impedance in this parallel component. The graph which overwritten the frequency spectrum which showed the intensity | strength (Y-axis) of the component wave of the echo signal with respect to the frequency (X-axis), and the said echo signal waveform.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an ultrasonic diagnostic apparatus and an adapter apparatus according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the ultrasonic diagnostic apparatus 10 includes an input unit 11, a display unit 12, a probe 20 (20 </ b> A, 20 </ b> B, 20 </ b> C), an adapter 30, and an apparatus main body 40. .

  The ultrasonic diagnostic apparatus 10 configured as described above irradiates an ultrasonic pulse from the probe 20 into the subject, detects a reflected wave reflected by the discontinuous surface of the acoustic impedance in the body, performs signal processing, and performs the subject processing. Biological information such as a tomographic image of the cross section and the state of blood flow is displayed on the display unit 12.

  The input unit 11 includes a plurality of switches, a keyboard, a mouse, a trackball, and the like (including a touch screen), and an operator performs various settings, input of instructions, screen operations, and the like.

  The display unit 12 displays an ultrasonic image (a morphological image of a living body or a blood flow image) acquired by the ultrasonic diagnostic apparatus 10 in real time, or reproduces and displays a recorded ultrasonic image. The display unit 12 also displays inspection information regarding the displayed image, various display screens such as an operation screen, and the like.

  In normal medical diagnosis, a probe 20 held by the operator on the right hand is placed on the body surface of the subject and desired for a region of interest (ROI) of the ultrasonic image displayed on the display unit 12. The operation is performed with the left hand in the input unit 11.

  The probe 20 has a large number of ultrasonic transducers 24 (see FIG. 5) arranged in parallel on the contact surface with the subject, irradiates the subject with ultrasonic waves, receives the reflected waves, and receives an electric signal Q ( (See FIG. 9).

  This ultrasonic transducer is an element that reversibly converts sound waves and electrical signals, such as piezoelectric ceramics. The ultrasonic transducer inputs an electric pulse signal P from an output unit 41 (see FIG. 2), which will be described later, outputs a specific sound wave vibration toward the inside of the subject, and inputs a reflected sound wave vibration. An electric signal Q synchronized with the vibration is output.

  Furthermore, ultrasonic beams excellent in straightness are output by a plurality of ultrasonic transducers, and the output timing of each ultrasonic transducer can be controlled to scan (scan) radially (fan shape). it can. Thereby, a tomographic image can be displayed in real time.

  The probe 20 (20A, 20B, 20C) is prepared according to the region of interest to be observed, and a plurality of types optimized for the shape, the arrangement of ultrasonic transducers, the scanning method, etc. are prepared and can be selected as appropriate. (Three examples are shown in the figure). Further, the probe 20 has an ID number unique to such a model so that the signal line (not shown) in the cables 21 and 32 can automatically recognize which type in the apparatus main body 40. (Details later).

  The probe 20 (20A, 20B, 20C) is provided at the tip of the first cable 21 (21A, 21B, 21C), and a connector 23 is provided at the end of the first cable 21.

  As a result, the plurality of probes 20 are detachably connected to the apparatus main body 40 via the adapter 30, and any one of the plurality of probes 20 connected according to the diagnostic purpose can be selected and used. .

  In the first cable 21 (21A, 21B, 21C), a plurality of coaxial cables 50 (see FIG. 3) are configured in a bundle shape. Each of the plurality of coaxial cables 50 corresponds to each of the plurality of ultrasonic transducers arranged on the probe 20.

  Similarly, the second cable 32 connected to the adapter 30 is configured by a plurality of coaxial cables 50 being bundled so as to extend the configuration of the first cable 21.

  As shown in FIG. 3, the coaxial cable 50 includes a strand 51 positioned at the axial center, an insulator 52 disposed concentrically around the strand 51, and an outer conductor 53 disposed concentrically therearound. And a protective coating 54 disposed concentrically therearound.

  The coaxial cable 50 configured as described above transmits the electrical pulse signal P output from the output unit 41 (see FIG. 2) to the probe 20 and transmits the electrical signal Q output from the probe 20 to the detection unit 43. Is.

  The tip of the strand 51 is connected to one electrode (not shown) of the ultrasonic transducer, and the other end is wired to the output unit 41 and the detection unit 43 (see FIG. 2). The electrical pulse signal P output from the output unit 41 is transmitted only in the direction of the probe 20 and the electrical signal Q output from the probe 20 is transmitted only in the direction of the detection unit 43 to the other end of the strand 51. A circuit (not shown in the figure) that regulates in this way is provided.

  The outer conductor 53 has a tip connected to the other electrode (not shown) of the ultrasonic transducer and the other end grounded (grounded).

  Returning to FIG. 1, the description will be continued.

  The adapter 30 (adapter device) includes a connecting portion 31, a second cable 32, an adapter body 33a in which an adjustment circuit 33 (see FIG. 4) is built, and a lock mechanism 33b.

  The second cable 32 is configured such that the distal end thereof is connected to the adapter main body 33a, the terminal end thereof is connected to the connecting portion 31, and the first cable 21 is extended.

  With the adapter 30 configured in this manner, the adjustment circuit 33 is accommodated in an adapter main body 33a that is separate from the apparatus main body 40, and is detachably connected via a terminal 42 that is a signal output / input terminal on the apparatus main body 40 side. To do. When the lock mechanism 33b is operated in a state where the adapter 30 is attached to the apparatus main body 40, the adapter 30 is prevented from coming off.

  A plurality of ports 31 </ b> A, 31 </ b> B, and 31 </ b> C are provided in the connecting portion 31 connected from the adapter main body 33 a via the second cable 32. A plurality of probes 20 (20A, 20B, 20C) are detachably connected to these ports 31A, 31B, 31C through a connector 23, and an arbitrary probe 20 can be selected and used. Yes.

  Furthermore, the characteristics of the transmission line with respect to the electrical signal Q output from the probe 20 can be optimized by the function of the adjustment circuit 33 (see FIG. 4) disposed inside the adapter body 33a. As a result, the electrical signal Q is detected with high sensitivity by the detection unit 43 (detailed later).

  Even if the adapter 30 is a probe of another system different from the standard probe of the ultrasonic diagnostic apparatus 10, compatibility can be provided by interface conversion including the shape of the port 31A. Further, the adapter 30 can appropriately adjust the inductance and capacitance of the adjustment circuit 33 to match the transmission line characteristics, and can improve the detection sensitivity even with a probe of another system.

  Thereby, the probe to be used can be made common in a plurality of different ultrasonic diagnostic apparatus systems.

  In the connecting part 31, as shown in FIG. 2, a plurality of ports 31 </ b> A, 31 </ b> B, 31 </ b> C are connected to the adjustment circuit 33 via the switching part 34. The switching unit 34 can electrically select and switch the probe 20 by electrically connecting and switching the first cable 21 and the second cable 32 connected to any one of the ports selected by the input unit 11. I am doing so.

  The adjustment circuit 33 (see FIG. 4 as appropriate) is provided in each of the plurality of coaxial cables 50 (see FIG. 3) constituting the second cable 32.

Then, as shown in FIG. 4, a plurality of capacitances C (C ₁ , C ₂ ) in which one end is connected to each strand 51 (see FIG. 3) or its extension and the other end is set to the ground level. ,..., C _n ) and a plurality of inductances L (L ₁ , L ₂ ,..., L _n ).

  Thus, the adjustment circuit 33 individually configures an LC parallel circuit for each of the strands 51 that communicate the first cable 21 and the second cable 32.

The values of the plurality of capacitances C and the values of the plurality of inductances L are different, and are associated switches S (S ₁ , S ₂ ,..., _Sn ) and switches T (T ₁ , T ₂ ,..., T _n ) make the inductance and capacitance in the LC parallel circuit adjustable.

  Thus, by switching the attached switch S and switch T, the transmission line characteristics can be optimized when the probe 20 is exchanged, and the detection sensitivity of the electric signal Q can be improved. Alternatively, when using the same probe 20 and changing the region of interest in the subject, the mode to be performed, the imaging condition, and the imaging site, the sensitivity of the desired frequency band in the electrical signal Q can be improved.

  Returning to FIG. 2, the description will be continued.

  The apparatus main body 40 includes an output unit 41 that outputs an electrical pulse signal P, a terminal 42 that connects the adapter 30, a detection unit 43 that detects an electrical signal Q, and a processing unit that generates display data according to various processing modes. 44, an ID recognition unit 45 that recognizes the ID of the probe 20, an image generation unit 46 that generates an image from display data, a storage unit 47 that stores the generated image, and a control unit that controls the operation of these components. 48.

  The apparatus main body 40 configured as described above functions as a computer that executes operations and data processing specified in accordance with a program in each of these components.

  The output unit 41 includes a clock generation circuit, a transmission delay circuit, a pulsar circuit, and the like (not shown), and outputs an electric pulse signal P to each of a plurality of ultrasonic transducers provided in the probe 20. is there.

  The clock generation circuit is a circuit that generates a clock signal that determines the transmission timing and transmission frequency of ultrasonic waves.

  The transmission delay circuit is a circuit that applies a different delay for each ultrasonic transducer to the transmission timing of the ultrasonic wave, and performs focusing and scanning of the ultrasonic beam.

  The pulsar circuit is individually provided on each of the strands 51 (see FIG. 3) connected to the plurality of ultrasonic transducers, and the high-frequency electric pulse P according to the conditions set by the clock generation circuit and the transmission delay circuit. Is output to each strand 51.

  The detection unit 43 amplifies an analog electrical signal Q output from each of the plurality of ultrasonic transducers by an amplifier 43a (see FIG. 6). The amplified signal is converted into a digital signal by an A / D converter (not shown), and further subjected to reception delay / addition processing and the like, and then transmitted to the processing unit 44.

  Here, the reception delay calculation emphasizes the reflection component from a predetermined direction by giving a delay time to the reception of the electrical signal Q in consideration of the reception directivity of the reflected wave input to the ultrasonic transducer.

  The processing unit 44 includes a B / M mode processing unit 44 </ b> A, a Doppler mode processing unit 44 </ b> B, a three-dimensional mode processing unit (not shown), and the like, and various types of digital signals of the electrical signal Q processed by the detection unit 43. Processing corresponding to the diagnosis mode is performed. Note that the modes described are merely examples and are not limited to these.

  Here, of the B / M modes, the B (Brightness) mode is a mode for obtaining a cross-sectional image displayed with a fan-shaped luminance distribution from the reflected wave of the scanned ultrasonic beam.

  Of the B / M modes, the M (Motion) mode is a mode that focuses on an ultrasonic beam irradiated in a certain direction and images a change in luminance distribution with time along a straight line along the beam.

  The Doppler mode uses a phenomenon in which the frequency of a reflected wave reflected from a moving surface such as a blood flow or a heart wall changes depending on the moving speed due to the Doppler effect. Thereby, useful information regarding blood flow in the living tissue can be obtained.

  This Doppler mode can be classified into a pulse Doppler method (PW Doppler method) and a continuous wave Doppler method (CW Doppler method).

  In the pulse Doppler method, blood flow information at a specific depth (distance from the probe 20) can be obtained by using a pulse wave. As described above, since the pulse Doppler method has a good distance resolution, the pulse Doppler method is suitably used for tissue measurement of a specific site or blood flow depth measurement.

  Unlike the pulse Doppler method, the continuous wave Doppler method uses a continuous wave to obtain a signal in which information on all the parts irradiated with the ultrasonic beam is superimposed. That is, the distance resolution is inferior because a signal reflecting all the blood flow conditions on the ultrasound irradiation path is obtained, but it is preferably used for measuring blood flow flowing at high speed.

  The image generation unit 46 generates images corresponding to various diagnostic modes based on the processing result in the processing unit 44. That is, the processing data output from the processing unit 44 is processed by a digital scan converter (DSC) that converts the image data into a standard television scanning image signal. The generated image signal is displayed on the display unit 12 in real time, or stored in the storage unit 47, read out in a timely manner, and reproduced and displayed on the display unit 12.

  The control unit 48 is configured by a microprocessor such as a CPU (Central Processing Unit) together with other arithmetic circuits, and generally controls each component of the ultrasonic diagnostic apparatus 10 based on an installed program. Here, the description will focus on functions related to the functions of the adapter 30 and its peripheral functions in the control unit 48.

  First, when the port 31B connected to the probe 20 used by the operator is selected by the input unit 11, the control unit 48 operates the switching unit 34 to connect the first cable 21 and the second cable 32 connected to the port 31B. And electrically connect.

  Then, the ID recognition unit 45 recognizes the probe ID of the probe 20 connected to the port 31B selected by the switching unit 34, and feeds back the result to the control unit 48.

  The control unit 48 that has recognized the type of the selected probe 20 changes the inductance and capacitance of the adjustment circuit 33 to predetermined values while reflecting other input conditions. This setting change is performed based on information in a database of the relationship between the selected probe 20 and other setting conditions and the predetermined values of inductance and capacitance to be set.

  Based on such a function of the control unit 48, a plurality of probes 20 of different types can be always connected to the apparatus main body 40. As a result, in a normal medical diagnosis, the probe 20 to be used can be changed by simply designating one of the ports 31A, 31B, and 31C at the input unit 11 in a timely manner. Furthermore, even when the probe 20 is changed, the transmission line characteristics are automatically optimized.

  The principle that the transmission line characteristics are optimized by adjusting the inductance and capacitance of the adjustment circuit 33 will be described with reference to FIGS.

  FIG. 5 is an outline of a transmission route of the reflected wave electrical signal Q (echo signal), and clearly shows one of the ultrasonic transducers arranged on the probe 20. And the coaxial cable 50 connected to this ultrasonic transducer | vibrator, the adjustment circuit 33 arrange | positioned on the extension line, and the detection part 43 are shown.

  FIG. 6 shows an equivalent circuit in each configuration of the transmission line. In addition, description is abbreviate | omitted about the parasitic resistance component.

In the probe 20 and the detector 43 parasitic inductors L _a, L _f, and the parasitic capacitor C _a, are C _e are present as shown.

Parasitic in the coaxial cable 50 in the fine classification inductor L _b, ..., L _d and the parasitic capacitor C _b, ..., represented a combination of C _d as a plurality of stages stacked distribution model.

In the adjusting circuit 33, in addition to such parasitic components, an inductance L ₂ and a capacitance C _{1 that} are adjusted by setting the switches S ₁ and T ₂ (see FIG. 4) are arranged in parallel.

Next, FIG. 7 summarizes the parasitic components shown in FIG. 6 and the components of the set inductance L ₂ and capacitance C ₁ , which are expressed as one series component and one parallel component, and an equivalent circuit of the entire transmission line. As shown.

  Of these, FIG. 8 shows an LC parallel model by simplifying the parallel component of the entire equivalent circuit of the transmission line.

The inductive impedance Z _L in the LC parallel model is expressed as Equation (1), the capacitive impedance Z _C is expressed as Equation (2), and the combined impedance Z ₁ of the LC parallel model is expressed as Equation (3). It is expressed as

The combined impedance Z ₁ of the parallel components in the equivalent circuit of the transmission line (FIG. 7) depends on the frequency ω of the transmission signal, as shown in this equation (3). For this reason, the electrical signal Q (echo signal) has different transmission characteristics depending on its frequency band.

Furthermore, if the combined inductance L and the combined capacitance C of the LC parallel model are set so as to satisfy Expression (4), the combined impedance Z _{1 at the} resonance frequency ω ₀ becomes infinite. At this time, the gain in the frequency band near the resonance frequency ω _{0 of} the transmitted electrical signal Q (echo signal) is maximized.

  Note that the optimum setting values of the capacitance C and the inductance L of the adjustment circuit 33 in the ultrasonic image diagnosis are set so that the gain in the frequency band of the electrical signal Q (echo signal) used by the diagnostic mode to be executed is maximized. Is desirable.

  Moreover, the optimum set values of the capacitance C and the inductance L can be experimentally obtained from the ultrasonic diagnostic apparatus 10 that is actually used.

  With reference to FIG. 9, the confirmation result of the effect by this invention is demonstrated.

  The graph of FIG. 9 shows the waveform of the electric signal Q (echo signal) detected by the detection unit 43 and its frequency spectrum in the ultrasonic diagnostic apparatus 10 having the equivalent circuit shown in FIG.

  The graph compares the case where the capacitance C is set to 50 pF (broken line, symbol Q ′) and 270 pF (solid line, symbol Q) with the inductance L of the adjustment circuit 33 fixed to a constant value.

  The X axis of the graph indicates the frequency band of the frequency spectrum of the electrical signals Q and Q ′, and the Y axis indicates the relative intensity of the component wave. The electrical signals Q and Q ′ are each represented by an arbitrary scale, with the X axis representing time and the Y axis representing voltage.

  From this, it is recognized that the intensity of the frequency spectrum in the frequency band near 9 MHz is improved by about 3.5 dB by increasing the capacitance C of the adjustment circuit 33 from 50 pF to 270 pF.

  In addition, although illustration of the graph is omitted, it can be seen that the position of the frequency band where the intensity of the frequency spectrum is improved changes by appropriately changing the setting value of the inductance L and the setting value of the capacitance C of the adjustment circuit 33. It was issued.

  That is, the adjustment circuit 33 can adjust the transmission characteristics of the electric signal Q transmitted through the cables 21 and 32 over a wide frequency band. Thereby, it is easy to optimize the transmission line characteristic of the electric signal Q (echo signal) of the reflected wave corresponding to the probe 20 used in the ultrasonic diagnostic apparatus 10, the mode to be performed, and the region of interest in the subject. become.

  In other words, by adjusting the inductance L and the capacitance C of the LC parallel circuit connected to the cables 21 and 32, an echo signal with improved sensitivity in a desired frequency band can be detected by the detection unit 43. Thereby, the image quality and reliability of the image generated by the image generation unit 46 can be improved.

  Further, another application example will be described in which the probe of the old system is used as it is when the ultrasonic diagnostic apparatus is updated from the old system to the new system. Here, it is assumed that the transmission line of the old system probe is shorter than the standard probe of the new system.

  In this case, it is assumed that the capacitance of the parallel equivalent circuit in the transmission line is smaller than the designed value in the new system, the system resonance point is shifted, and the signal intensity in a predetermined frequency band is lowered. Therefore, by performing adjustment to add the capacitance C in the adapter 30, it is possible to obtain a necessary gain in the frequency band and obtain detection sensitivity equivalent to that when the standard probe of the new system is used.

  By the way, the embodiments of the present invention are not limited to those described above, and the adjustment circuit 33 may be built in the apparatus main body 40. Although the number of ports provided in the connecting portion 31 is also exemplified as three, a single or plural ports are provided.

  Moreover, it is not divided | segmented like the 1st cable 21 and the 2nd cable 32, and the one continuous cable which does not use the connection part 31 may be applied. Furthermore, the adjustment circuit 33 may not be shared by a plurality of probes to be replaced, but may be individually arranged on a cable directly connected to the probe.

  In addition, as the set values of the inductance L and the capacitance C for optimizing the transmission line characteristics, optimum values obtained experimentally for various combinations of selections such as probes and modes are stored in a database and stored in advance (stored in the storage unit 47). I can keep it. The switches S and T (see FIG. 4) can be automatically switched based on the data read from the registered database, and the switches S and T can be manually operated on a trial and error basis in the field. It can also be switched. Further, the selection of the ports 31A, 31B, and 31C can be performed by manual operation in addition to the case of executing from the input unit 11.

  DESCRIPTION OF SYMBOLS 10 ... Ultrasonic diagnostic apparatus, 20 ... Probe, 21 ... 1st cable, 24 ... Ultrasonic transducer, 30 ... Adapter, 31 ... Connection part, 31A, 31B, 31C ... Port, 32 ... 2nd cable, 33 ... Adjustment Circuit 33a ... Adapter body 34 ... Switching unit 40 ... Device body 41 ... Output unit 42 ... Terminal 43 ... Detection unit 44 ... Processing unit 44A ... B / M mode processing unit 44B ... Doppler mode processing 45, ID recognition unit, 46 ... Image generation unit, 48 ... Control unit, 50 ... Coaxial cable, 51 ... Wire, 52 ... Insulator, 53 ... External conductor, 54 ... Protective coating, C ... Capacitance, L ... Inductance, Q ... electric signal (echo signal).

Claims (8)

A probe that irradiates the subject with ultrasonic waves, receives the reflected waves, and converts them into electrical signals;
A cable for transmitting the electrical signal converted by the probe;
A detection unit for detecting the electrical signal transmitted to the cable;
An image generation unit that processes the electrical signal detected by the detection unit to generate an image;
An ultrasonic diagnostic apparatus comprising: an LC parallel circuit connected to the cable, and an adjustment circuit capable of adjusting at least a capacitance of an inductance and a capacitance thereof. The ultrasonic diagnostic apparatus according to claim 1, wherein the adjustment circuit can also adjust the inductance. The ultrasonic diagnostic apparatus according to claim 1, wherein a terminal for detachably connecting the adjustment circuit is provided in an apparatus main body provided with the detection unit and the image generation unit. A memory for storing an appropriate value of the inductance or the capacitance that is made into a database based on at least one information selected from an ID number unique to the probe type, an imaging region of the subject, a region of interest, and an imaging mode And
The control part which adjusts the said adjustment circuit according to the said appropriate value called from the said memory | storage part based on the said information input from the input part, The control part characterized by the above-mentioned. The ultrasonic diagnostic apparatus according to item. The cable is separated into a first cable having a tip connected to the probe and a second cable having a tip connected to the adjustment circuit,
5. The connector according to claim 1, wherein a connector provided at the end of the first cable and a port provided at the end of the second cable are detachably connected. 6. Ultrasonic diagnostic equipment. A plurality of ports are provided for connecting a plurality of probes separately,
The ultrasonic diagnostic apparatus according to claim 5, further comprising: a coupling unit that couples the first cable coupled to any one port selected from the plurality of ports to the second cable. . In an adapter device provided in an ultrasonic diagnostic apparatus that detects an electrical signal converted from a reflected wave of an ultrasonic wave irradiated in a subject by a detection unit and generates an image in the subject,
A port connected to the end of the first cable for transmitting the electrical signal by connecting to the probe for irradiating the ultrasonic wave and receiving the reflected wave;
A second cable for transmitting the electrical signal from the port to the detection unit;
An LC parallel circuit connected to the second cable, and an adjustment circuit capable of adjusting at least one of the inductance and the capacitance;
An adapter apparatus comprising: an adapter main body that accommodates the adjustment circuit and is configured to be detachable from the ultrasonic diagnostic apparatus. Multiple ports are provided to connect multiple probes separately,
The adapter device according to claim 7, further comprising: a connecting portion that connects the first cable connected to any one of the plurality of ports and the second cable. .

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