WO2010103747A1 - 超音波診断装置 - Google Patents
超音波診断装置 Download PDFInfo
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- WO2010103747A1 WO2010103747A1 PCT/JP2010/001413 JP2010001413W WO2010103747A1 WO 2010103747 A1 WO2010103747 A1 WO 2010103747A1 JP 2010001413 W JP2010001413 W JP 2010001413W WO 2010103747 A1 WO2010103747 A1 WO 2010103747A1
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- ultrasonic diagnostic
- drive pulse
- diagnostic apparatus
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- 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
- G01S7/52019—Details of transmitters
- G01S7/5202—Details of transmitters for pulse systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
- B06B1/0215—Driving circuits for generating pulses, e.g. bursts of oscillations, envelopes
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- 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
- G01S7/52046—Techniques for image enhancement involving transmitter or receiver
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- 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8959—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using coded signals for correlation purposes
- G01S15/8963—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using coded signals for correlation purposes using pulse inversion
Definitions
- the present invention relates to an ultrasonic diagnostic apparatus in which the amplitude of a drive pulse for driving a vibrator is variable.
- An ultrasonic diagnostic apparatus irradiates ultrasonic waves from a transducer into a subject, and can display morphological information such as organs and blood flow on a display unit by using ultrasonic waves reflected from the specimen.
- the principle is well known (for example, refer to Patent Document 1).
- FIG. 7A is a diagram showing a configuration of a drive pulse generator arranged in a transmitter for driving a transducer in a conventional ultrasonic diagnostic apparatus.
- the drive pulse generator high breakdown voltage switches SW11 and SW12 are connected in series, a power supply terminal of + B [V] is connected to the other end of the high breakdown voltage switch SW11, and -B [ V] power supply terminal is connected.
- a vibrator (not shown) is connected to a connection point between the high voltage switches SW11 and SW12. Further, the high breakdown voltage switches SW11 and SW12 are each controlled to be switched by a timing controller (not shown).
- FIG. 7B is a waveform diagram showing the switching operation of the high voltage switches SW11 and SW12 and the drive pulse train signal supplied to the vibrator. An ultrasonic pulse used for one scan is generated by a group of drive pulse trains shown in FIG. 7B.
- the ultrasonic beam In the ultrasonic diagnostic apparatus, in order to increase the lateral resolution, the ultrasonic beam should be as thin as possible. This principle is the same for both transmission and reception, but only transmission is described here.
- apodization In order to suppress the side lobe, it is known that it is effective to reduce the amplitude of the drive pulse supplied to the vibrator at the end of the opening, and this is called apodization. In order to perform apodization, it is necessary to change the amplitude of the drive pulse by the drive pulse generator depending on where the corresponding vibrator is located in the opening. The greater the degree of change (in what stage), the more effective the sidelobe suppression.
- FIG. 8A is a diagram showing a configuration of a drive pulse generator capable of changing the amplitude of the drive pulse.
- FIG. 8B is a waveform diagram showing switching and drive pulse train signals of the high voltage switches SW13 to SW16.
- the drive pulse generator is configured such that a plurality of positive power supply terminals and a plurality of negative power supply terminals are connected to the vibrator via high withstand voltage switches SW13 to SW16, respectively. Yes.
- a drive pulse train having an amplitude of 2B2 [V] and a drive pulse train having an amplitude of 2B1 [V] are generated according to the switching timing of the high voltage switches SW13 to SW16.
- the conventional ultrasonic diagnostic apparatus when four different amplitudes are to be output, as shown in FIG. 9, there are four high voltage switches SW17 to SW20 on the plus side and high voltage switches SW21 to SW21 on the minus side. A total of eight high voltage switches with four SW24s are required, and eight control signals are also required. In other words, if you want to output multiple types of amplitudes, you need two times the number of amplitudes you want to obtain with the positive high-voltage switch and the negative high-voltage switch, and simultaneously generate twice as many control signals. A circuit is also required. As a result, the ultrasonic diagnostic apparatus has a large configuration and is expensive.
- the present invention provides an ultrasonic diagnostic apparatus that can change the amplitude of a drive pulse in multiple stages, is low-cost, and has a configuration that has both a small amount of material and a small amount of control. It is the purpose.
- a first ultrasonic diagnostic apparatus of the present invention includes a transducer that radiates ultrasonic waves, a transmitter that drives the transducer, and a plurality of power supplies that supply a plurality of positive voltages and negative voltages to the transmitter.
- the transmitter includes a plurality of switches that selectively connect the power sources and a timing controller that controls the plurality of switches, and selects the switches to generate drive pulses.
- the plurality of positive voltages and the absolute values of the plurality of negative voltages are different from each other.
- a second ultrasonic diagnostic apparatus of the present invention includes a transducer that radiates ultrasonic waves, a transmitter that drives the transducer, and a plurality of power supplies that supply a plurality of positive voltages and negative voltages to the transmitter.
- the transmitter includes a plurality of switches that selectively connect the power sources and a timing controller that controls the plurality of switches, and selects the switches to generate drive pulses.
- a part of the power source that supplies the positive voltage and the power source that supplies the negative voltage have the same positive voltage and the absolute value of the negative voltage, and the remaining power sources are:
- the plurality of positive voltages and the absolute values of the plurality of negative voltages are different from each other.
- the amplitude of the drive pulse can be changed in multiple stages by including a voltage in which the positive voltage and the absolute value of the negative voltage do not coincide with each other at low cost.
- FIG. 1 is a block diagram showing the configuration of the ultrasonic diagnostic apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a circuit diagram showing a configuration of a drive pulse generator of the ultrasonic diagnostic apparatus according to the embodiment.
- FIG. 3 is a waveform diagram of a drive pulse train signal output from the drive pulse generator of the ultrasonic diagnostic apparatus according to the embodiment.
- FIG. 4 is an output waveform diagram showing an ideal waveform and an actual waveform of the drive pulse train signal output from the drive pulse generator of the ultrasonic diagnostic apparatus according to the embodiment.
- FIG. 5 is an output waveform diagram showing an ideal waveform and an actual waveform of the drive pulse train signal output from the drive pulse generator of the ultrasonic diagnostic apparatus according to Embodiment 2 of the present invention.
- FIG. 1 is a block diagram showing the configuration of the ultrasonic diagnostic apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a circuit diagram showing a configuration of a drive pulse generator of the ultrasonic diagnostic apparatus
- FIG. 6 is a waveform diagram of a drive pulse train signal output from the drive pulse generator of the ultrasonic diagnostic apparatus according to Embodiment 3 of the present invention.
- FIG. 7A is a circuit diagram showing a configuration of a drive pulse generator of a conventional ultrasonic diagnostic apparatus.
- FIG. 7B is a waveform diagram of a drive pulse train signal output from a drive pulse generator of a conventional ultrasonic diagnostic apparatus.
- FIG. 8A is a circuit diagram showing a configuration of a drive pulse generator of a conventional ultrasonic diagnostic apparatus.
- FIG. 8B is a waveform diagram of a drive pulse train signal output from a drive pulse generator of a conventional ultrasonic diagnostic apparatus.
- FIG. 9 is a circuit diagram showing a configuration of a drive pulse generator of a conventional ultrasonic diagnostic apparatus.
- the ultrasonic diagnostic apparatus of the present invention can take various modes. That is, in the first ultrasonic diagnostic apparatus, the power source that supplies the plurality of positive voltages and negative voltages has a difference between one of the plurality of positive voltages and one of the plurality of negative voltages. It can be configured not to be the same as the difference between the positive voltage and the negative voltage due to other combinations.
- the ratio between the voltage having the maximum absolute value and the voltage having the minimum absolute value among the plurality of positive voltages and negative voltages can be configured to be 10 times or less.
- the timing controller has a case where the absolute value of the voltage of the last drive pulse in the drive pulse train for outputting the ultrasonic pulse from the transducer is higher than a predetermined value.
- a drive pulse having an absolute value smaller than a predetermined value and a reverse polarity can be added to the rear part of the last drive pulse.
- the timing controller alternately reverses the polarity of the voltage supplied to the vibrator, gradually increases the absolute value of the voltage, and then gradually decreases after the absolute value reaches the maximum.
- the switch can be configured to be controlled.
- FIG. 1 is a block diagram showing the configuration of the ultrasonic diagnostic apparatus according to Embodiment 1 of the present invention.
- the probe 1 has a vibrator. When a drive pulse train signal is applied, the probe 1 irradiates an object (not shown) with an ultrasonic pulse, and receives a reflected ultrasonic pulse (ultrasonic echo). Is output.
- the transmitter 2 has a drive pulse generator that generates a drive pulse train signal, and sends a high-pressure drive pulse train signal to the transducer in the probe 1 under the control of the timing controller 7 to generate an ultrasonic pulse.
- An ultrasonic pulse used for one transmission / reception is generated by a group of drive pulse trains in the drive pulse train signal.
- Several tens to several hundreds of transducers in the probe 1 are arranged in recent ultrasonic diagnostic apparatuses, and a plurality of drive pulse generators corresponding to each transducer are arranged in the transmitter 2.
- the ultrasonic pulse output from the probe 1 is reflected in the subject, converted into an electric signal (received signal) again by the transducer in the probe 1, and input to the receiver 3.
- the receiver 3 amplifies the reception signal, and adds the reception signals from the respective vibrators at the same timing.
- the reception signal added by the receiver 3 is input to the detector 4 and detected.
- the detected received signal is scan-converted by the scan converter 5 into image data that can be displayed.
- the image data is displayed as an ultrasonic image by the display 6.
- the timing controller 7 controls each part of the ultrasonic diagnostic apparatus such as switching control of the high voltage switch of the transmitter 2 and delay control in the receiver 3.
- FIG. 2 is a circuit diagram showing a configuration of one of a plurality of drive pulse generators in the transmitter 2 of the ultrasonic diagnostic apparatus according to the present embodiment.
- the power supply voltage plus side + B1 [V], + B2 [V], minus side -B3 [V], -B4 [V] are supplied, and are set to satisfy the relationship of B1 ⁇ B3 ⁇ B2 ⁇ B4. .
- the power supply voltage of + B1 [V] is the high voltage switch SW1
- the power voltage of + B2 [V] is the high voltage switch SW2
- the power voltage of -B3 [V] is the high voltage switch SW3
- the power voltage of -B4 [V] is high. It is supplied to the vibrator via the withstand voltage switch SW4.
- the high breakdown voltage switches SW1 to SW4 are switching-controlled by the timing controller 7.
- FIG. 3 is a waveform diagram showing switching of the high withstand voltage switches SW1 to SW4 and driving pulse train signals to be output.
- timing controller 7 when the timing controller 7 alternately turns on and off the high voltage switches SW1 and SW3, a drive pulse train having a relatively small amplitude of (B1 + B3) [V] is obtained. Further, the timing controller 7 alternately turns on and off the high voltage switches SW2 and SW3 to obtain a drive pulse train having an amplitude of (B2 + B3) [V]. In addition, the timing controller 7 alternately turns on and off the high voltage switches SW1 and SW4, thereby obtaining a drive pulse train having an amplitude of (B1 + B4) [V]. Further, when the timing controller 7 alternately turns on and off the high voltage switches SW2 and SW4, a drive pulse train having a relatively large amplitude of (B2 + B4) [V] is obtained.
- the direct current levels are different, but the vibrator is not driven by direct current, and can operate without problems.
- B1 10 [V]
- B2 40 [V]
- ⁇ B3 ⁇ 20 [V]
- four amplitudes of 30 [V] (B1 + B3), 60 [V] (B2 + B3), 90 [V] (B1 + B4), and 120 [V] (B2 + B4) are obtained depending on the combination of voltage values.
- the voltage values that can be combined have limitations regarding the ratio of each voltage value.
- the ratio of the voltage value is such that the plus side is 100 [V] and the minus side is 1 [V]
- the waveform is close to the case of using a unipolar pulse, and the objectivity on the frequency axis is high. Collapse (frequency characteristics collapse).
- the ratio of the positive side voltage and the negative side voltage is desirably 10 times or less experimentally.
- drive pulse trains of four types of amplitudes can be generated by the power supply terminals to which four different voltages are supplied and the switching of the four high voltage switches. That is, the ultrasonic diagnostic apparatus according to the present embodiment can select many amplitudes of the drive pulse train with a small circuit scale. Therefore, by adjusting the amplitude of the drive pulse train supplied to the vibrator in accordance with the position in the opening of the ultrasonic wave, the operation for reducing the side lobe can be realized with a simplified circuit.
- the ultrasonic diagnostic apparatus according to the second embodiment of the present invention is the same as the configuration of the ultrasonic diagnostic apparatus according to the first embodiment, and the operation is different.
- the same components as those of the ultrasound diagnostic apparatus according to Embodiment 1 are denoted by the same reference numerals and description thereof is omitted.
- FIG. 4 is a waveform diagram showing an ideal waveform and an actual waveform when the potential of the final drive pulse in the drive pulse train is set to ⁇ B4 [V].
- SW4 When the high-breakdown-voltage switch SW4 is turned off at time t1, it is ideal that the potential immediately shifts to 0 [V], but actually, it gradually shifts to 0 [V].
- the length of the “small” pulse to be added later does not need to be the same as the length of other pulses. If the potential can converge, a short pulse length can be selected.
- harmonic imaging uses ultrasonic waves of higher harmonic components that are generated in the subject when irradiated with ultrasonic waves.
- the phase inversion method is a method of extracting harmonic components by inverting the polarity of the drive pulse, performing transmission / reception twice in the same direction, and canceling the fundamental wave.
- the above problem is that it is impossible to reverse the polarity of the driving pulse required in the phase inversion method. For this reason, the sum of the inverted waveforms does not become a sufficiently small value, and the ultrasonic diagnostic image becomes defective.
- the configuration of the ultrasonic diagnostic apparatus according to the third embodiment of the present invention is the same as the configuration of the ultrasonic diagnostic apparatus according to the first embodiment, and the same reference numerals are given and description thereof is omitted.
- the ultrasonic diagnostic apparatus according to the present embodiment differs from the ultrasonic diagnostic apparatus according to the first embodiment in the switching operation of the high voltage switch.
- the filter method is a method of extracting a harmonic component from a received signal by using a high-pass filter and displaying it as an ultrasonic image. Therefore, the image quality deteriorates if the irradiated ultrasonic pulse itself contains harmonics.
- FIG. 6 is a waveform diagram of a drive pulse train output from the drive pulse generator of the ultrasonic diagnostic apparatus according to the present embodiment.
- the configuration of the drive pulse generator is the same as that shown in FIG.
- the timing controller 7 turns on the high voltage switch SW1 from the state where the high voltage switches SW1 to SW4 are OFF. As a result, the potential of the drive pulse becomes B1 [V].
- the high voltage switch SW1 is turned off and the high voltage switch SW3 is turned on. As a result, the potential of the drive pulse decreases by (B1 + B3) [V] to ⁇ B3 [V].
- the high voltage switch SW3 is turned off and the high voltage switch SW2 is turned on.
- the potential of the drive pulse increases by (B3 + B2) [V] to B2 [V].
- the high voltage switch SW2 is turned off and the high voltage switch SW4 is turned on.
- the potential of the drive pulse decreases by (B4 + B2) [V] to ⁇ B4 [V].
- the high voltage switch SW4 is turned off and the high voltage switch SW2 is turned on.
- the potential of the drive pulse increases by (B4 + B2) [V] to B2 [V].
- the high voltage switch SW2 is turned off and the high voltage switch SW3 is turned on.
- the potential of the drive pulse decreases to (B3 + B2) [V] and becomes ⁇ B3 [V].
- the high voltage switch SW3 is turned off and the high voltage switch SW1 is turned on.
- the potential of the drive pulse increases by (B3 + B1) [V] to B1 [V].
- the high voltage switch SW1 is turned off. As a result, the potential of the drive pulse becomes 0 [V].
- the drive pulse train formed by the drive pulses has a waveform having a smooth envelope that gradually increases in amplitude and gradually decreases from the maximum amplitude, as shown by a broken line. Since an ultrasonic pulse is generated by such a drive pulse train, harmonic components in the ultrasonic pulse can be suppressed.
- the ultrasonic diagnostic apparatus can suppress the harmonic components in the ultrasonic pulse in the filter-type harmonic imaging, so the harmonic components extracted from the received signal include The amount of harmonic components contained in the ultrasonic pulse during irradiation is reduced. For this reason, deterioration of the image quality of the displayed ultrasonic image can be suppressed.
- the present invention has a configuration in which the absolute value of the output voltage differs between the positive side and the negative side of the power supply, so that both the physical quantity and the control amount can be reduced, and the amplitude of the drive pulse can be changed in multiple stages at low cost. It can be used as an ultrasonic diagnostic apparatus.
- Probe 2 Transmitter 3 Receiver 4 Detector 5 Scan Converter 6 Display 7 Timing Controller SW1 to SW4 High Voltage Switch
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Abstract
Description
図1は、本発明の実施の形態1に係る超音波診断装置の構成を示すブロック図である。プローブ1は、振動子を有し、駆動パルス列信号が印加されると被検体(図示せず)に対して超音波パルスを照射し、反射した超音波パルス(超音波エコー)を受信すると受信信号を出力する。送信器2は、駆動パルス列信号を生成する駆動パルス生成器を有し、タイミング制御器7の制御によりプローブ1内の振動子に高圧の駆動パルス列信号を送り、超音波パルスを発生させる。なお、駆動パルス列信号における1群の駆動パルス列により一回の送受信に用いられる超音波パルスが生成される。プローブ1内の振動子は、最近の超音波診断装置では数十から数百個配列されており、送信器2には、各振動子に対応する駆動パルス生成器が複数配置されている。
本発明の実施の形態2に係る超音波診断装置は、実施の形態1に係る超音波診断装置の構成と同様であり、動作が異なる。以下の説明において、実施の形態1に係る超音波診断装置と同様の構成要素は、同一の符号を付して説明を省略する。
本発明の実施の形態3に係る超音波診断装置の構成は、実施の形態1に係る超音波診断装置の構成と同様であり、同一の符号を付して説明を省略する。本実施の形態に係る超音波診断装置は、実施の形態1に係る超音波診断装置に対して高耐圧スイッチのスイッチング動作が異なる。
2 送信器
3 受信器
4 検波器
5 走査変換器
6 表示器
7 タイミング制御器
SW1~SW4 高耐圧スイッチ
Claims (6)
- 超音波を照射する振動子と、
前記振動子を駆動する送信器と、
前記送信器に複数の正電圧と負電圧を供給する複数の電源を備え、
前記送信器は、
前記電源を選択的に接続する複数のスイッチと、
前記複数のスイッチを制御するタイミング制御器とを有し、
前記スイッチを選択して駆動パルスを生成する超音波診断装置において、
前記複数の正電圧と、前記複数の負電圧の絶対値とは、互いに異なることを特徴とする超音波診断装置。 - 前記複数の正電圧と負電圧を供給する電源は、前記複数の正電圧のうちの1つと、前記複数の負電圧のうちの1つとの差が、他の組み合わせによる正電圧と負電圧との差と同じにならないように構成された請求項1記載の超音波診断装置。
- 複数の正電圧および負電圧のうち絶対値が最大の電圧と、絶対値が最小の電圧の比が10倍以下となる請求項1記載の超音波診断装置。
- 超音波を照射する振動子と、
前記振動子を駆動する送信器と、
前記送信器に複数の正電圧と負電圧を供給する複数の電源を備え、
前記送信器は、
前記電源を選択的に接続する複数のスイッチと、
前記複数のスイッチを制御するタイミング制御器とを有し、
前記スイッチを選択して駆動パルスを生成する超音波診断装置において、
前記正電圧を供給する電源と、前記負電圧を供給する電源との一部は、前記正電圧と前記負電圧の絶対値とが一致し、残りの電源は、前記複数の正電圧と、前記複数の負電圧の絶対値とが互いに異なるように構成されたことを特徴とする超音波診断装置。 - 前記タイミング制御器は、前記振動子から超音波パルスを出力するための駆動パルス列における末尾の駆動パルスの電圧の絶対値が所定値より高い場合に、前記末尾の駆動パルスの後部に、絶対値が所定値より小さく逆極性の駆動パルスを付加するように構成された請求項1または4に記載の超音波診断装置。
- 前記タイミング制御器は、前記振動子に供給される電圧の極性が交互に反転し、電圧の絶対値が徐々に大きくなり、絶対値が最大となった後に、絶対値が徐々に小さくなるように前記スイッチを制御するように構成された請求項1、2、および4のいずれか一項に記載の超音波診断装置。
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US13/001,745 US9581685B2 (en) | 2009-03-12 | 2010-03-02 | Ultrasonic diagnostic apparatus with pulse timing controller |
JP2010525555A JP5377498B2 (ja) | 2009-03-12 | 2010-03-02 | 超音波診断装置 |
EP10750506A EP2294981A4 (en) | 2009-03-12 | 2010-03-02 | ULTRASOUND DIAGNOSTIC TOOL |
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WO2014203778A1 (ja) * | 2013-06-21 | 2014-12-24 | 株式会社 東芝 | 超音波診断装置及び超音波プローブ |
JP2019072427A (ja) * | 2017-10-19 | 2019-05-16 | フクダ電子株式会社 | 電圧供給回路および超音波診断装置 |
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US8347723B2 (en) * | 2010-05-21 | 2013-01-08 | Sonipulse, Inc. | Sonic resonator system for testing the adhesive bond strength of composite materials |
EP3144074B1 (en) * | 2015-09-16 | 2020-03-11 | Samsung Medison Co., Ltd. | Ultrasonic probe, ultrasonic imaging apparatus including the same, and method for controlling the ultrasonic imaging apparatus |
US11154279B2 (en) * | 2016-03-31 | 2021-10-26 | Bfly Operations, Inc. | Transmit generator for controlling a multilevel pulser of an ultrasound device, and related methods and apparatus |
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CN101632984B (zh) * | 2008-07-24 | 2014-09-17 | Ge医疗系统环球技术有限公司 | 电压产生电路及超声波诊断装置 |
JP2010042146A (ja) * | 2008-08-13 | 2010-02-25 | Ge Medical Systems Global Technology Co Llc | 超音波撮像装置 |
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- 2010-03-02 US US13/001,745 patent/US9581685B2/en not_active Expired - Fee Related
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JPS6287141A (ja) * | 1985-10-14 | 1987-04-21 | 横河メディカルシステム株式会社 | 超音波診断装置 |
JP2000005180A (ja) * | 1998-06-25 | 2000-01-11 | Olympus Optical Co Ltd | 音響インピーダンス測定装置 |
JP2007296131A (ja) * | 2006-04-28 | 2007-11-15 | Toshiba Corp | 超音波プローブおよび超音波診断装置 |
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WO2014203778A1 (ja) * | 2013-06-21 | 2014-12-24 | 株式会社 東芝 | 超音波診断装置及び超音波プローブ |
JP2015002878A (ja) * | 2013-06-21 | 2015-01-08 | 株式会社東芝 | 超音波診断装置及び超音波プローブ |
US10123777B2 (en) | 2013-06-21 | 2018-11-13 | Toshiba Medical Systems Corporation | Ultrasound diagnosis apparatus and ultrasound probe |
JP2019072427A (ja) * | 2017-10-19 | 2019-05-16 | フクダ電子株式会社 | 電圧供給回路および超音波診断装置 |
Also Published As
Publication number | Publication date |
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EP2294981A1 (en) | 2011-03-16 |
JP5377498B2 (ja) | 2013-12-25 |
US20110101824A1 (en) | 2011-05-05 |
US9581685B2 (en) | 2017-02-28 |
EP2294981A4 (en) | 2012-06-06 |
JPWO2010103747A1 (ja) | 2012-09-13 |
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